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-rw-r--r--arch/alpha/kernel/setup.c7
-rw-r--r--arch/arm64/Kconfig11
-rw-r--r--arch/arm64/include/asm/acpi.h5
-rw-r--r--arch/arm64/include/asm/kvm_asm.h33
-rw-r--r--arch/arm64/include/asm/kvm_emulate.h6
-rw-r--r--arch/arm64/include/asm/kvm_host.h9
-rw-r--r--arch/arm64/include/asm/kvm_mmu.h20
-rw-r--r--arch/arm64/kernel/debug-monitors.c2
-rw-r--r--arch/arm64/kernel/ftrace.c3
-rw-r--r--arch/arm64/kernel/setup.c4
-rw-r--r--arch/arm64/kernel/vdso32/Makefile8
-rw-r--r--arch/arm64/kvm/aarch32.c28
-rw-r--r--arch/arm64/kvm/arm.c25
-rw-r--r--arch/arm64/kvm/handle_exit.c32
-rw-r--r--arch/arm64/kvm/hyp/debug-sr.c4
-rw-r--r--arch/arm64/kvm/hyp/switch.c65
-rw-r--r--arch/arm64/kvm/hyp/sysreg-sr.c8
-rw-r--r--arch/arm64/kvm/pmu.c8
-rw-r--r--arch/arm64/kvm/sys_regs.c25
-rw-r--r--arch/arm64/kvm/sys_regs_generic_v8.c10
-rw-r--r--arch/m68k/coldfire/pci.c4
-rw-r--r--arch/m68k/configs/stmark2_defconfig1
-rw-r--r--arch/m68k/include/asm/uaccess_no.h6
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/mips/include/asm/cpu-features.h3
-rw-r--r--arch/mips/include/asm/kvm_host.h52
-rw-r--r--arch/mips/include/asm/mipsregs.h4
-rw-r--r--arch/mips/include/uapi/asm/inst.h11
-rw-r--r--arch/mips/kernel/cpu-probe.c5
-rw-r--r--arch/mips/kvm/Kconfig1
-rw-r--r--arch/mips/kvm/Makefile5
-rw-r--r--arch/mips/kvm/emulate.c503
-rw-r--r--arch/mips/kvm/entry.c19
-rw-r--r--arch/mips/kvm/interrupt.c93
-rw-r--r--arch/mips/kvm/interrupt.h14
-rw-r--r--arch/mips/kvm/loongson_ipi.c214
-rw-r--r--arch/mips/kvm/mips.c47
-rw-r--r--arch/mips/kvm/tlb.c41
-rw-r--r--arch/mips/kvm/trap_emul.c3
-rw-r--r--arch/mips/kvm/vz.c237
-rw-r--r--arch/nios2/kernel/signal.c1
-rw-r--r--arch/powerpc/include/asm/kvm_book3s.h16
-rw-r--r--arch/powerpc/include/asm/kvm_host.h1
-rw-r--r--arch/powerpc/include/asm/kvm_ppc.h27
-rw-r--r--arch/powerpc/kvm/book3s.c4
-rw-r--r--arch/powerpc/kvm/book3s.h2
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_hv.c12
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_radix.c36
-rw-r--r--arch/powerpc/kvm/book3s_64_vio.c18
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c10
-rw-r--r--arch/powerpc/kvm/book3s_hv.c75
-rw-r--r--arch/powerpc/kvm/book3s_hv_nested.c15
-rw-r--r--arch/powerpc/kvm/book3s_hv_uvmem.c14
-rw-r--r--arch/powerpc/kvm/book3s_paired_singles.c72
-rw-r--r--arch/powerpc/kvm/book3s_pr.c30
-rw-r--r--arch/powerpc/kvm/booke.c36
-rw-r--r--arch/powerpc/kvm/booke.h8
-rw-r--r--arch/powerpc/kvm/booke_emulate.c2
-rw-r--r--arch/powerpc/kvm/e500_emulate.c15
-rw-r--r--arch/powerpc/kvm/emulate.c10
-rw-r--r--arch/powerpc/kvm/emulate_loadstore.c32
-rw-r--r--arch/powerpc/kvm/powerpc.c72
-rw-r--r--arch/powerpc/kvm/trace_hv.h6
-rw-r--r--arch/powerpc/platforms/powernv/vas-fault.c4
-rw-r--r--arch/riscv/Kconfig74
-rw-r--r--arch/riscv/include/asm/clocksource.h7
-rw-r--r--arch/riscv/include/asm/irq.h5
-rw-r--r--arch/riscv/include/asm/processor.h13
-rw-r--r--arch/riscv/include/asm/smp.h3
-rw-r--r--arch/riscv/include/asm/vdso.h2
-rw-r--r--arch/riscv/include/asm/vdso/clocksource.h8
-rw-r--r--arch/riscv/include/asm/vdso/gettimeofday.h79
-rw-r--r--arch/riscv/include/asm/vdso/processor.h19
-rw-r--r--arch/riscv/include/asm/vdso/vsyscall.h27
-rw-r--r--arch/riscv/kernel/cpu.c16
-rw-r--r--arch/riscv/kernel/entry.S4
-rw-r--r--arch/riscv/kernel/irq.c33
-rw-r--r--arch/riscv/kernel/patch.c1
-rw-r--r--arch/riscv/kernel/smp.c11
-rw-r--r--arch/riscv/kernel/time.c9
-rw-r--r--arch/riscv/kernel/traps.c2
-rw-r--r--arch/riscv/kernel/vdso.c24
-rw-r--r--arch/riscv/kernel/vdso/Makefile12
-rw-r--r--arch/riscv/kernel/vdso/clock_getres.S18
-rw-r--r--arch/riscv/kernel/vdso/clock_gettime.S18
-rw-r--r--arch/riscv/kernel/vdso/gettimeofday.S18
-rw-r--r--arch/riscv/kernel/vdso/vdso.lds.S2
-rw-r--r--arch/riscv/kernel/vdso/vgettimeofday.c25
-rw-r--r--arch/riscv/mm/init.c11
-rw-r--r--arch/s390/include/asm/kvm_host.h2
-rw-r--r--arch/s390/kvm/kvm-s390.c4
-rw-r--r--arch/x86/Kconfig9
-rw-r--r--arch/x86/boot/Makefile2
-rw-r--r--arch/x86/boot/compressed/Makefile2
-rw-r--r--arch/x86/entry/vdso/Makefile6
-rw-r--r--arch/x86/include/asm/bitops.h6
-rw-r--r--arch/x86/include/asm/intel-family.h2
-rw-r--r--arch/x86/include/asm/kvm_host.h3
-rw-r--r--arch/x86/include/asm/vdso/gettimeofday.h18
-rw-r--r--arch/x86/kernel/Makefile4
-rw-r--r--arch/x86/kernel/apic/apic.c2
-rw-r--r--arch/x86/kernel/cpu/Makefile3
-rw-r--r--arch/x86/kernel/cpu/bugs.c92
-rw-r--r--arch/x86/kernel/cpu/intel.c3
-rw-r--r--arch/x86/kernel/e820.c10
-rw-r--r--arch/x86/kernel/kvm.c1
-rw-r--r--arch/x86/kernel/process.c28
-rw-r--r--arch/x86/kernel/reboot.c8
-rw-r--r--arch/x86/kernel/time.c4
-rw-r--r--arch/x86/kernel/vmlinux.lds.S4
-rw-r--r--arch/x86/kvm/cpuid.c31
-rw-r--r--arch/x86/kvm/debugfs.c10
-rw-r--r--arch/x86/kvm/emulate.c8
-rw-r--r--arch/x86/kvm/i8254.c1
-rw-r--r--arch/x86/kvm/svm/nested.c2
-rw-r--r--arch/x86/kvm/svm/svm.c4
-rw-r--r--arch/x86/kvm/vmx/nested.c82
-rw-r--r--arch/x86/kvm/vmx/pmu_intel.c2
-rw-r--r--arch/x86/kvm/vmx/vmx.c38
-rw-r--r--arch/x86/kvm/vmx/vmx.h2
-rw-r--r--arch/x86/kvm/x86.c139
-rw-r--r--arch/x86/lib/Makefile9
-rw-r--r--arch/x86/mm/Makefile4
-rw-r--r--arch/x86/purgatory/.gitignore1
-rw-r--r--arch/x86/purgatory/Makefile21
-rw-r--r--arch/x86/realmode/Makefile3
-rw-r--r--arch/x86/realmode/rm/Makefile3
127 files changed, 2200 insertions, 909 deletions
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index f5c42a8fcf9c..53520f8cb904 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -430,8 +430,13 @@ register_cpus(void)
arch_initcall(register_cpus);
#ifdef CONFIG_MAGIC_SYSRQ
+static void sysrq_reboot_handler(int unused)
+{
+ machine_halt();
+}
+
static const struct sysrq_key_op srm_sysrq_reboot_op = {
- .handler = machine_halt,
+ .handler = sysrq_reboot_handler,
.help_msg = "reboot(b)",
.action_msg = "Resetting",
.enable_mask = SYSRQ_ENABLE_BOOT,
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7f9d38444d6d..8a46ed3ab429 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1299,6 +1299,14 @@ config COMPAT_VDSO
You must have a 32-bit build of glibc 2.22 or later for programs
to seamlessly take advantage of this.
+config THUMB2_COMPAT_VDSO
+ bool "Compile the 32-bit vDSO for Thumb-2 mode" if EXPERT
+ depends on COMPAT_VDSO
+ default y
+ help
+ Compile the compat vDSO with '-mthumb -fomit-frame-pointer' if y,
+ otherwise with '-marm'.
+
menuconfig ARMV8_DEPRECATED
bool "Emulate deprecated/obsolete ARMv8 instructions"
depends on SYSCTL
@@ -1740,8 +1748,9 @@ config ARM64_DEBUG_PRIORITY_MASKING
endif
config RELOCATABLE
- bool
+ bool "Build a relocatable kernel image" if EXPERT
select ARCH_HAS_RELR
+ default y
help
This builds the kernel as a Position Independent Executable (PIE),
which retains all relocation metadata required to relocate the
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index b263e239cb59..a45366c3909b 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -12,6 +12,7 @@
#include <linux/efi.h>
#include <linux/memblock.h>
#include <linux/psci.h>
+#include <linux/stddef.h>
#include <asm/cputype.h>
#include <asm/io.h>
@@ -31,14 +32,14 @@
* is therefore used to delimit the MADT GICC structure minimum length
* appropriately.
*/
-#define ACPI_MADT_GICC_MIN_LENGTH ACPI_OFFSET( \
+#define ACPI_MADT_GICC_MIN_LENGTH offsetof( \
struct acpi_madt_generic_interrupt, efficiency_class)
#define BAD_MADT_GICC_ENTRY(entry, end) \
(!(entry) || (entry)->header.length < ACPI_MADT_GICC_MIN_LENGTH || \
(unsigned long)(entry) + (entry)->header.length > (end))
-#define ACPI_MADT_GICC_SPE (ACPI_OFFSET(struct acpi_madt_generic_interrupt, \
+#define ACPI_MADT_GICC_SPE (offsetof(struct acpi_madt_generic_interrupt, \
spe_interrupt) + sizeof(u16))
/* Basic configuration for ACPI */
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 0c9b5fc4ba0a..352aaebf4198 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -81,12 +81,39 @@ extern u32 __kvm_get_mdcr_el2(void);
extern char __smccc_workaround_1_smc[__SMCCC_WORKAROUND_1_SMC_SZ];
-/* Home-grown __this_cpu_{ptr,read} variants that always work at HYP */
+/*
+ * Obtain the PC-relative address of a kernel symbol
+ * s: symbol
+ *
+ * The goal of this macro is to return a symbol's address based on a
+ * PC-relative computation, as opposed to a loading the VA from a
+ * constant pool or something similar. This works well for HYP, as an
+ * absolute VA is guaranteed to be wrong. Only use this if trying to
+ * obtain the address of a symbol (i.e. not something you obtained by
+ * following a pointer).
+ */
+#define hyp_symbol_addr(s) \
+ ({ \
+ typeof(s) *addr; \
+ asm("adrp %0, %1\n" \
+ "add %0, %0, :lo12:%1\n" \
+ : "=r" (addr) : "S" (&s)); \
+ addr; \
+ })
+
+/*
+ * Home-grown __this_cpu_{ptr,read} variants that always work at HYP,
+ * provided that sym is really a *symbol* and not a pointer obtained from
+ * a data structure. As for SHIFT_PERCPU_PTR(), the creative casting keeps
+ * sparse quiet.
+ */
#define __hyp_this_cpu_ptr(sym) \
({ \
- void *__ptr = hyp_symbol_addr(sym); \
+ void *__ptr; \
+ __verify_pcpu_ptr(&sym); \
+ __ptr = hyp_symbol_addr(sym); \
__ptr += read_sysreg(tpidr_el2); \
- (typeof(&sym))__ptr; \
+ (typeof(sym) __kernel __force *)__ptr; \
})
#define __hyp_this_cpu_read(sym) \
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 6ea53e6e8b26..4d0f8ea600ba 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -112,12 +112,6 @@ static inline void vcpu_ptrauth_disable(struct kvm_vcpu *vcpu)
vcpu->arch.hcr_el2 &= ~(HCR_API | HCR_APK);
}
-static inline void vcpu_ptrauth_setup_lazy(struct kvm_vcpu *vcpu)
-{
- if (vcpu_has_ptrauth(vcpu))
- vcpu_ptrauth_disable(vcpu);
-}
-
static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu)
{
return vcpu->arch.vsesr_el2;
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index abbdf9703e20..c3e6fcc664b1 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -284,9 +284,6 @@ struct kvm_vcpu_arch {
struct kvm_guest_debug_arch vcpu_debug_state;
struct kvm_guest_debug_arch external_debug_state;
- /* Pointer to host CPU context */
- struct kvm_cpu_context *host_cpu_context;
-
struct thread_info *host_thread_info; /* hyp VA */
struct user_fpsimd_state *host_fpsimd_state; /* hyp VA */
@@ -404,8 +401,10 @@ void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg);
* CP14 and CP15 live in the same array, as they are backed by the
* same system registers.
*/
-#define vcpu_cp14(v,r) ((v)->arch.ctxt.copro[(r)])
-#define vcpu_cp15(v,r) ((v)->arch.ctxt.copro[(r)])
+#define CPx_BIAS IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
+
+#define vcpu_cp14(v,r) ((v)->arch.ctxt.copro[(r) ^ CPx_BIAS])
+#define vcpu_cp15(v,r) ((v)->arch.ctxt.copro[(r) ^ CPx_BIAS])
struct kvm_vm_stat {
ulong remote_tlb_flush;
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 094260aaafdd..b12bfc1f051a 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -108,26 +108,6 @@ static __always_inline unsigned long __kern_hyp_va(unsigned long v)
#define kern_hyp_va(v) ((typeof(v))(__kern_hyp_va((unsigned long)(v))))
/*
- * Obtain the PC-relative address of a kernel symbol
- * s: symbol
- *
- * The goal of this macro is to return a symbol's address based on a
- * PC-relative computation, as opposed to a loading the VA from a
- * constant pool or something similar. This works well for HYP, as an
- * absolute VA is guaranteed to be wrong. Only use this if trying to
- * obtain the address of a symbol (i.e. not something you obtained by
- * following a pointer).
- */
-#define hyp_symbol_addr(s) \
- ({ \
- typeof(s) *addr; \
- asm("adrp %0, %1\n" \
- "add %0, %0, :lo12:%1\n" \
- : "=r" (addr) : "S" (&s)); \
- addr; \
- })
-
-/*
* We currently support using a VM-specified IPA size. For backward
* compatibility, the default IPA size is fixed to 40bits.
*/
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index 15e80c876d46..5df49366e9ab 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -130,7 +130,7 @@ static int clear_os_lock(unsigned int cpu)
return 0;
}
-static int debug_monitors_init(void)
+static int __init debug_monitors_init(void)
{
return cpuhp_setup_state(CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
"arm64/debug_monitors:starting",
diff --git a/arch/arm64/kernel/ftrace.c b/arch/arm64/kernel/ftrace.c
index 8618faa82e6d..86a5cf9bc19a 100644
--- a/arch/arm64/kernel/ftrace.c
+++ b/arch/arm64/kernel/ftrace.c
@@ -69,7 +69,8 @@ static struct plt_entry *get_ftrace_plt(struct module *mod, unsigned long addr)
if (addr == FTRACE_ADDR)
return &plt[FTRACE_PLT_IDX];
- if (addr == FTRACE_REGS_ADDR && IS_ENABLED(CONFIG_FTRACE_WITH_REGS))
+ if (addr == FTRACE_REGS_ADDR &&
+ IS_ENABLED(CONFIG_DYNAMIC_FTRACE_WITH_REGS))
return &plt[FTRACE_REGS_PLT_IDX];
#endif
return NULL;
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 3fd2c11c09fc..93b3844cf442 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -319,6 +319,10 @@ void __init setup_arch(char **cmdline_p)
xen_early_init();
efi_init();
+
+ if (!efi_enabled(EFI_BOOT) && ((u64)_text % MIN_KIMG_ALIGN) != 0)
+ pr_warn(FW_BUG "Kernel image misaligned at boot, please fix your bootloader!");
+
arm64_memblock_init();
paging_init();
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 3964738ebbde..7ea1e827e505 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -105,6 +105,14 @@ VDSO_CFLAGS += -D__uint128_t='void*'
VDSO_CFLAGS += $(call cc32-disable-warning,shift-count-overflow)
VDSO_CFLAGS += -Wno-int-to-pointer-cast
+# Compile as THUMB2 or ARM. Unwinding via frame-pointers in THUMB2 is
+# unreliable.
+ifeq ($(CONFIG_THUMB2_COMPAT_VDSO), y)
+VDSO_CFLAGS += -mthumb -fomit-frame-pointer
+else
+VDSO_CFLAGS += -marm
+endif
+
VDSO_AFLAGS := $(VDSO_CAFLAGS)
VDSO_AFLAGS += -D__ASSEMBLY__
diff --git a/arch/arm64/kvm/aarch32.c b/arch/arm64/kvm/aarch32.c
index 0a356aa91aa1..40a62a99fbf8 100644
--- a/arch/arm64/kvm/aarch32.c
+++ b/arch/arm64/kvm/aarch32.c
@@ -33,6 +33,26 @@ static const u8 return_offsets[8][2] = {
[7] = { 4, 4 }, /* FIQ, unused */
};
+static bool pre_fault_synchronize(struct kvm_vcpu *vcpu)
+{
+ preempt_disable();
+ if (vcpu->arch.sysregs_loaded_on_cpu) {
+ kvm_arch_vcpu_put(vcpu);
+ return true;
+ }
+
+ preempt_enable();
+ return false;
+}
+
+static void post_fault_synchronize(struct kvm_vcpu *vcpu, bool loaded)
+{
+ if (loaded) {
+ kvm_arch_vcpu_load(vcpu, smp_processor_id());
+ preempt_enable();
+ }
+}
+
/*
* When an exception is taken, most CPSR fields are left unchanged in the
* handler. However, some are explicitly overridden (e.g. M[4:0]).
@@ -155,7 +175,10 @@ static void prepare_fault32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset)
void kvm_inject_undef32(struct kvm_vcpu *vcpu)
{
+ bool loaded = pre_fault_synchronize(vcpu);
+
prepare_fault32(vcpu, PSR_AA32_MODE_UND, 4);
+ post_fault_synchronize(vcpu, loaded);
}
/*
@@ -168,6 +191,9 @@ static void inject_abt32(struct kvm_vcpu *vcpu, bool is_pabt,
u32 vect_offset;
u32 *far, *fsr;
bool is_lpae;
+ bool loaded;
+
+ loaded = pre_fault_synchronize(vcpu);
if (is_pabt) {
vect_offset = 12;
@@ -191,6 +217,8 @@ static void inject_abt32(struct kvm_vcpu *vcpu, bool is_pabt,
/* no need to shuffle FS[4] into DFSR[10] as its 0 */
*fsr = DFSR_FSC_EXTABT_nLPAE;
}
+
+ post_fault_synchronize(vcpu, loaded);
}
void kvm_inject_dabt32(struct kvm_vcpu *vcpu, unsigned long addr)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 7a57381c05e8..90cb90561446 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -144,11 +144,6 @@ out_fail_alloc:
return ret;
}
-int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
-{
- return 0;
-}
-
vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
{
return VM_FAULT_SIGBUS;
@@ -340,10 +335,8 @@ void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
int *last_ran;
- kvm_host_data_t *cpu_data;
last_ran = this_cpu_ptr(vcpu->kvm->arch.last_vcpu_ran);
- cpu_data = this_cpu_ptr(&kvm_host_data);
/*
* We might get preempted before the vCPU actually runs, but
@@ -355,7 +348,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
}
vcpu->cpu = cpu;
- vcpu->arch.host_cpu_context = &cpu_data->host_ctxt;
kvm_vgic_load(vcpu);
kvm_timer_vcpu_load(vcpu);
@@ -370,7 +362,8 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
else
vcpu_set_wfx_traps(vcpu);
- vcpu_ptrauth_setup_lazy(vcpu);
+ if (vcpu_has_ptrauth(vcpu))
+ vcpu_ptrauth_disable(vcpu);
}
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
@@ -990,11 +983,17 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
* Ensure a rebooted VM will fault in RAM pages and detect if the
* guest MMU is turned off and flush the caches as needed.
*
- * S2FWB enforces all memory accesses to RAM being cacheable, we
- * ensure that the cache is always coherent.
+ * S2FWB enforces all memory accesses to RAM being cacheable,
+ * ensuring that the data side is always coherent. We still
+ * need to invalidate the I-cache though, as FWB does *not*
+ * imply CTR_EL0.DIC.
*/
- if (vcpu->arch.has_run_once && !cpus_have_const_cap(ARM64_HAS_STAGE2_FWB))
- stage2_unmap_vm(vcpu->kvm);
+ if (vcpu->arch.has_run_once) {
+ if (!cpus_have_final_cap(ARM64_HAS_STAGE2_FWB))
+ stage2_unmap_vm(vcpu->kvm);
+ else
+ __flush_icache_all();
+ }
vcpu_reset_hcr(vcpu);
diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index eb194696ef62..5a02d4c90559 100644
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -162,40 +162,14 @@ static int handle_sve(struct kvm_vcpu *vcpu, struct kvm_run *run)
return 1;
}
-#define __ptrauth_save_key(regs, key) \
-({ \
- regs[key ## KEYLO_EL1] = read_sysreg_s(SYS_ ## key ## KEYLO_EL1); \
- regs[key ## KEYHI_EL1] = read_sysreg_s(SYS_ ## key ## KEYHI_EL1); \
-})
-
-/*
- * Handle the guest trying to use a ptrauth instruction, or trying to access a
- * ptrauth register.
- */
-void kvm_arm_vcpu_ptrauth_trap(struct kvm_vcpu *vcpu)
-{
- struct kvm_cpu_context *ctxt;
-
- if (vcpu_has_ptrauth(vcpu)) {
- vcpu_ptrauth_enable(vcpu);
- ctxt = vcpu->arch.host_cpu_context;
- __ptrauth_save_key(ctxt->sys_regs, APIA);
- __ptrauth_save_key(ctxt->sys_regs, APIB);
- __ptrauth_save_key(ctxt->sys_regs, APDA);
- __ptrauth_save_key(ctxt->sys_regs, APDB);
- __ptrauth_save_key(ctxt->sys_regs, APGA);
- } else {
- kvm_inject_undefined(vcpu);
- }
-}
-
/*
* Guest usage of a ptrauth instruction (which the guest EL1 did not turn into
- * a NOP).
+ * a NOP). If we get here, it is that we didn't fixup ptrauth on exit, and all
+ * that we can do is give the guest an UNDEF.
*/
static int kvm_handle_ptrauth(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
- kvm_arm_vcpu_ptrauth_trap(vcpu);
+ kvm_inject_undefined(vcpu);
return 1;
}
diff --git a/arch/arm64/kvm/hyp/debug-sr.c b/arch/arm64/kvm/hyp/debug-sr.c
index 0fc9872a1467..e95af204fec7 100644
--- a/arch/arm64/kvm/hyp/debug-sr.c
+++ b/arch/arm64/kvm/hyp/debug-sr.c
@@ -185,7 +185,7 @@ void __hyp_text __debug_switch_to_guest(struct kvm_vcpu *vcpu)
if (!(vcpu->arch.flags & KVM_ARM64_DEBUG_DIRTY))
return;
- host_ctxt = kern_hyp_va(vcpu->arch.host_cpu_context);
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
guest_ctxt = &vcpu->arch.ctxt;
host_dbg = &vcpu->arch.host_debug_state.regs;
guest_dbg = kern_hyp_va(vcpu->arch.debug_ptr);
@@ -207,7 +207,7 @@ void __hyp_text __debug_switch_to_host(struct kvm_vcpu *vcpu)
if (!(vcpu->arch.flags & KVM_ARM64_DEBUG_DIRTY))
return;
- host_ctxt = kern_hyp_va(vcpu->arch.host_cpu_context);
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
guest_ctxt = &vcpu->arch.ctxt;
host_dbg = &vcpu->arch.host_debug_state.regs;
guest_dbg = kern_hyp_va(vcpu->arch.debug_ptr);
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
index 676b6585e5ae..db1c4487d95d 100644
--- a/arch/arm64/kvm/hyp/switch.c
+++ b/arch/arm64/kvm/hyp/switch.c
@@ -490,6 +490,64 @@ static bool __hyp_text handle_tx2_tvm(struct kvm_vcpu *vcpu)
return true;
}
+static bool __hyp_text esr_is_ptrauth_trap(u32 esr)
+{
+ u32 ec = ESR_ELx_EC(esr);
+
+ if (ec == ESR_ELx_EC_PAC)
+ return true;
+
+ if (ec != ESR_ELx_EC_SYS64)
+ return false;
+
+ switch (esr_sys64_to_sysreg(esr)) {
+ case SYS_APIAKEYLO_EL1:
+ case SYS_APIAKEYHI_EL1:
+ case SYS_APIBKEYLO_EL1:
+ case SYS_APIBKEYHI_EL1:
+ case SYS_APDAKEYLO_EL1:
+ case SYS_APDAKEYHI_EL1:
+ case SYS_APDBKEYLO_EL1:
+ case SYS_APDBKEYHI_EL1:
+ case SYS_APGAKEYLO_EL1:
+ case SYS_APGAKEYHI_EL1:
+ return true;
+ }
+
+ return false;
+}
+
+#define __ptrauth_save_key(regs, key) \
+({ \
+ regs[key ## KEYLO_EL1] = read_sysreg_s(SYS_ ## key ## KEYLO_EL1); \
+ regs[key ## KEYHI_EL1] = read_sysreg_s(SYS_ ## key ## KEYHI_EL1); \
+})
+
+static bool __hyp_text __hyp_handle_ptrauth(struct kvm_vcpu *vcpu)
+{
+ struct kvm_cpu_context *ctxt;
+ u64 val;
+
+ if (!vcpu_has_ptrauth(vcpu) ||
+ !esr_is_ptrauth_trap(kvm_vcpu_get_hsr(vcpu)))
+ return false;
+
+ ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
+ __ptrauth_save_key(ctxt->sys_regs, APIA);
+ __ptrauth_save_key(ctxt->sys_regs, APIB);
+ __ptrauth_save_key(ctxt->sys_regs, APDA);
+ __ptrauth_save_key(ctxt->sys_regs, APDB);
+ __ptrauth_save_key(ctxt->sys_regs, APGA);
+
+ vcpu_ptrauth_enable(vcpu);
+
+ val = read_sysreg(hcr_el2);
+ val |= (HCR_API | HCR_APK);
+ write_sysreg(val, hcr_el2);
+
+ return true;
+}
+
/*
* Return true when we were able to fixup the guest exit and should return to
* the guest, false when we should restore the host state and return to the
@@ -524,6 +582,9 @@ static bool __hyp_text fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
if (__hyp_handle_fpsimd(vcpu))
return true;
+ if (__hyp_handle_ptrauth(vcpu))
+ return true;
+
if (!__populate_fault_info(vcpu))
return true;
@@ -642,7 +703,7 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
struct kvm_cpu_context *guest_ctxt;
u64 exit_code;
- host_ctxt = vcpu->arch.host_cpu_context;
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
host_ctxt->__hyp_running_vcpu = vcpu;
guest_ctxt = &vcpu->arch.ctxt;
@@ -747,7 +808,7 @@ int __hyp_text __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu)
vcpu = kern_hyp_va(vcpu);
- host_ctxt = kern_hyp_va(vcpu->arch.host_cpu_context);
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
host_ctxt->__hyp_running_vcpu = vcpu;
guest_ctxt = &vcpu->arch.ctxt;
diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
index ea5d22fbdacf..cc7e957f5b2c 100644
--- a/arch/arm64/kvm/hyp/sysreg-sr.c
+++ b/arch/arm64/kvm/hyp/sysreg-sr.c
@@ -39,7 +39,6 @@ static void __hyp_text __sysreg_save_el1_state(struct kvm_cpu_context *ctxt)
{
ctxt->sys_regs[CSSELR_EL1] = read_sysreg(csselr_el1);
ctxt->sys_regs[SCTLR_EL1] = read_sysreg_el1(SYS_SCTLR);
- ctxt->sys_regs[ACTLR_EL1] = read_sysreg(actlr_el1);
ctxt->sys_regs[CPACR_EL1] = read_sysreg_el1(SYS_CPACR);
ctxt->sys_regs[TTBR0_EL1] = read_sysreg_el1(SYS_TTBR0);
ctxt->sys_regs[TTBR1_EL1] = read_sysreg_el1(SYS_TTBR1);
@@ -123,7 +122,6 @@ static void __hyp_text __sysreg_restore_el1_state(struct kvm_cpu_context *ctxt)
isb();
}
- write_sysreg(ctxt->sys_regs[ACTLR_EL1], actlr_el1);
write_sysreg_el1(ctxt->sys_regs[CPACR_EL1], SYS_CPACR);
write_sysreg_el1(ctxt->sys_regs[TTBR0_EL1], SYS_TTBR0);
write_sysreg_el1(ctxt->sys_regs[TTBR1_EL1], SYS_TTBR1);
@@ -267,12 +265,13 @@ void __hyp_text __sysreg32_restore_state(struct kvm_vcpu *vcpu)
*/
void kvm_vcpu_load_sysregs(struct kvm_vcpu *vcpu)
{
- struct kvm_cpu_context *host_ctxt = vcpu->arch.host_cpu_context;
struct kvm_cpu_context *guest_ctxt = &vcpu->arch.ctxt;
+ struct kvm_cpu_context *host_ctxt;
if (!has_vhe())
return;
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
__sysreg_save_user_state(host_ctxt);
/*
@@ -303,12 +302,13 @@ void kvm_vcpu_load_sysregs(struct kvm_vcpu *vcpu)
*/
void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu)
{
- struct kvm_cpu_context *host_ctxt = vcpu->arch.host_cpu_context;
struct kvm_cpu_context *guest_ctxt = &vcpu->arch.ctxt;
+ struct kvm_cpu_context *host_ctxt;
if (!has_vhe())
return;
+ host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
deactivate_traps_vhe_put();
__sysreg_save_el1_state(guest_ctxt);
diff --git a/arch/arm64/kvm/pmu.c b/arch/arm64/kvm/pmu.c
index e71d00bb5271..b5ae3a5d509e 100644
--- a/arch/arm64/kvm/pmu.c
+++ b/arch/arm64/kvm/pmu.c
@@ -163,15 +163,13 @@ static void kvm_vcpu_pmu_disable_el0(unsigned long events)
*/
void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu)
{
- struct kvm_cpu_context *host_ctxt;
struct kvm_host_data *host;
u32 events_guest, events_host;
if (!has_vhe())
return;
- host_ctxt = vcpu->arch.host_cpu_context;
- host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
+ host = this_cpu_ptr(&kvm_host_data);
events_guest = host->pmu_events.events_guest;
events_host = host->pmu_events.events_host;
@@ -184,15 +182,13 @@ void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu)
*/
void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu)
{
- struct kvm_cpu_context *host_ctxt;
struct kvm_host_data *host;
u32 events_guest, events_host;
if (!has_vhe())
return;
- host_ctxt = vcpu->arch.host_cpu_context;
- host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
+ host = this_cpu_ptr(&kvm_host_data);
events_guest = host->pmu_events.events_guest;
events_host = host->pmu_events.events_host;
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 80985439bfb2..baf5ce9225ce 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -78,7 +78,6 @@ static bool __vcpu_read_sys_reg_from_cpu(int reg, u64 *val)
switch (reg) {
case CSSELR_EL1: *val = read_sysreg_s(SYS_CSSELR_EL1); break;
case SCTLR_EL1: *val = read_sysreg_s(SYS_SCTLR_EL12); break;
- case ACTLR_EL1: *val = read_sysreg_s(SYS_ACTLR_EL1); break;
case CPACR_EL1: *val = read_sysreg_s(SYS_CPACR_EL12); break;
case TTBR0_EL1: *val = read_sysreg_s(SYS_TTBR0_EL12); break;
case TTBR1_EL1: *val = read_sysreg_s(SYS_TTBR1_EL12); break;
@@ -118,7 +117,6 @@ static bool __vcpu_write_sys_reg_to_cpu(u64 val, int reg)
switch (reg) {
case CSSELR_EL1: write_sysreg_s(val, SYS_CSSELR_EL1); break;
case SCTLR_EL1: write_sysreg_s(val, SYS_SCTLR_EL12); break;
- case ACTLR_EL1: write_sysreg_s(val, SYS_ACTLR_EL1); break;
case CPACR_EL1: write_sysreg_s(val, SYS_CPACR_EL12); break;
case TTBR0_EL1: write_sysreg_s(val, SYS_TTBR0_EL12); break;
case TTBR1_EL1: write_sysreg_s(val, SYS_TTBR1_EL12); break;
@@ -1034,16 +1032,13 @@ static bool trap_ptrauth(struct kvm_vcpu *vcpu,
struct sys_reg_params *p,
const struct sys_reg_desc *rd)
{
- kvm_arm_vcpu_ptrauth_trap(vcpu);
-
/*
- * Return false for both cases as we never skip the trapped
- * instruction:
- *
- * - Either we re-execute the same key register access instruction
- * after enabling ptrauth.
- * - Or an UNDEF is injected as ptrauth is not supported/enabled.
+ * If we land here, that is because we didn't fixup the access on exit
+ * by allowing the PtrAuth sysregs. The only way this happens is when
+ * the guest does not have PtrAuth support enabled.
*/
+ kvm_inject_undefined(vcpu);
+
return false;
}
@@ -1319,10 +1314,16 @@ static bool access_clidr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
static bool access_csselr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
const struct sys_reg_desc *r)
{
+ int reg = r->reg;
+
+ /* See the 32bit mapping in kvm_host.h */
+ if (p->is_aarch32)
+ reg = r->reg / 2;
+
if (p->is_write)
- vcpu_write_sys_reg(vcpu, p->regval, r->reg);
+ vcpu_write_sys_reg(vcpu, p->regval, reg);
else
- p->regval = vcpu_read_sys_reg(vcpu, r->reg);
+ p->regval = vcpu_read_sys_reg(vcpu, reg);
return true;
}
diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c
index 9cb6b4c8355a..aa9d356451eb 100644
--- a/arch/arm64/kvm/sys_regs_generic_v8.c
+++ b/arch/arm64/kvm/sys_regs_generic_v8.c
@@ -27,6 +27,14 @@ static bool access_actlr(struct kvm_vcpu *vcpu,
return ignore_write(vcpu, p);
p->regval = vcpu_read_sys_reg(vcpu, ACTLR_EL1);
+
+ if (p->is_aarch32) {
+ if (r->Op2 & 2)
+ p->regval = upper_32_bits(p->regval);
+ else
+ p->regval = lower_32_bits(p->regval);
+ }
+
return true;
}
@@ -47,6 +55,8 @@ static const struct sys_reg_desc genericv8_cp15_regs[] = {
/* ACTLR */
{ Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b001),
access_actlr },
+ { Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b011),
+ access_actlr },
};
static struct kvm_sys_reg_target_table genericv8_target_table = {
diff --git a/arch/m68k/coldfire/pci.c b/arch/m68k/coldfire/pci.c
index 62b0eb6cf69a..84eab0f5e00a 100644
--- a/arch/m68k/coldfire/pci.c
+++ b/arch/m68k/coldfire/pci.c
@@ -216,8 +216,10 @@ static int __init mcf_pci_init(void)
/* Keep a virtual mapping to IO/config space active */
iospace = (unsigned long) ioremap(PCI_IO_PA, PCI_IO_SIZE);
- if (iospace == 0)
+ if (iospace == 0) {
+ pci_free_host_bridge(bridge);
return -ENODEV;
+ }
pr_info("Coldfire: PCI IO/config window mapped to 0x%x\n",
(u32) iospace);
diff --git a/arch/m68k/configs/stmark2_defconfig b/arch/m68k/configs/stmark2_defconfig
index 27fa9465d19d..2b746f55f419 100644
--- a/arch/m68k/configs/stmark2_defconfig
+++ b/arch/m68k/configs/stmark2_defconfig
@@ -48,7 +48,6 @@ CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_ROM=y
CONFIG_MTD_COMPLEX_MAPPINGS=y
CONFIG_MTD_PLATRAM=y
-CONFIG_MTD_M25P80=y
CONFIG_MTD_SPI_NOR=y
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
diff --git a/arch/m68k/include/asm/uaccess_no.h b/arch/m68k/include/asm/uaccess_no.h
index a24cfe4a0d32..dcfb69361408 100644
--- a/arch/m68k/include/asm/uaccess_no.h
+++ b/arch/m68k/include/asm/uaccess_no.h
@@ -42,7 +42,7 @@ static inline int _access_ok(unsigned long addr, unsigned long size)
__put_user_asm(__pu_err, __pu_val, ptr, l); \
break; \
case 8: \
- memcpy(ptr, &__pu_val, sizeof (*(ptr))); \
+ memcpy((void __force *)ptr, &__pu_val, sizeof(*(ptr))); \
break; \
default: \
__pu_err = __put_user_bad(); \
@@ -60,7 +60,7 @@ extern int __put_user_bad(void);
* aliasing issues.
*/
-#define __ptr(x) ((unsigned long *)(x))
+#define __ptr(x) ((unsigned long __user *)(x))
#define __put_user_asm(err,x,ptr,bwl) \
__asm__ ("move" #bwl " %0,%1" \
@@ -85,7 +85,7 @@ extern int __put_user_bad(void);
u64 l; \
__typeof__(*(ptr)) t; \
} __gu_val; \
- memcpy(&__gu_val.l, ptr, sizeof(__gu_val.l)); \
+ memcpy(&__gu_val.l, (const void __force *)ptr, sizeof(__gu_val.l)); \
(x) = __gu_val.t; \
break; \
} \
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index eb1e86c30d0c..26c63e8161f0 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1403,6 +1403,7 @@ config CPU_LOONGSON64
select MIPS_L1_CACHE_SHIFT_6
select GPIOLIB
select SWIOTLB
+ select HAVE_KVM
help
The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
cores implements the MIPS64R2 instruction set with many extensions,
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index caecbae4b599..724dfddcab92 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -682,6 +682,9 @@
#ifndef cpu_guest_has_htw
#define cpu_guest_has_htw (cpu_data[0].guest.options & MIPS_CPU_HTW)
#endif
+#ifndef cpu_guest_has_ldpte
+#define cpu_guest_has_ldpte (cpu_data[0].guest.options & MIPS_CPU_LDPTE)
+#endif
#ifndef cpu_guest_has_mvh
#define cpu_guest_has_mvh (cpu_data[0].guest.options & MIPS_CPU_MVH)
#endif
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index e28b5a946e26..363e7a89d173 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -23,6 +23,8 @@
#include <asm/inst.h>
#include <asm/mipsregs.h>
+#include <kvm/iodev.h>
+
/* MIPS KVM register ids */
#define MIPS_CP0_32(_R, _S) \
(KVM_REG_MIPS_CP0 | KVM_REG_SIZE_U32 | (8 * (_R) + (_S)))
@@ -66,9 +68,11 @@
#define KVM_REG_MIPS_CP0_CONFIG3 MIPS_CP0_32(16, 3)
#define KVM_REG_MIPS_CP0_CONFIG4 MIPS_CP0_32(16, 4)
#define KVM_REG_MIPS_CP0_CONFIG5 MIPS_CP0_32(16, 5)
+#define KVM_REG_MIPS_CP0_CONFIG6 MIPS_CP0_32(16, 6)
#define KVM_REG_MIPS_CP0_CONFIG7 MIPS_CP0_32(16, 7)
#define KVM_REG_MIPS_CP0_MAARI MIPS_CP0_64(17, 2)
#define KVM_REG_MIPS_CP0_XCONTEXT MIPS_CP0_64(20, 0)
+#define KVM_REG_MIPS_CP0_DIAG MIPS_CP0_32(22, 0)
#define KVM_REG_MIPS_CP0_ERROREPC MIPS_CP0_64(30, 0)
#define KVM_REG_MIPS_CP0_KSCRATCH1 MIPS_CP0_64(31, 2)
#define KVM_REG_MIPS_CP0_KSCRATCH2 MIPS_CP0_64(31, 3)
@@ -78,8 +82,8 @@
#define KVM_REG_MIPS_CP0_KSCRATCH6 MIPS_CP0_64(31, 7)
-#define KVM_MAX_VCPUS 8
-#define KVM_USER_MEM_SLOTS 8
+#define KVM_MAX_VCPUS 16
+#define KVM_USER_MEM_SLOTS 16
/* memory slots that does not exposed to userspace */
#define KVM_PRIVATE_MEM_SLOTS 0
@@ -171,6 +175,9 @@ struct kvm_vcpu_stat {
u64 vz_ghfc_exits;
u64 vz_gpa_exits;
u64 vz_resvd_exits;
+#ifdef CONFIG_CPU_LOONGSON64
+ u64 vz_cpucfg_exits;
+#endif
#endif
u64 halt_successful_poll;
u64 halt_attempted_poll;
@@ -183,11 +190,39 @@ struct kvm_vcpu_stat {
struct kvm_arch_memory_slot {
};
+#ifdef CONFIG_CPU_LOONGSON64
+struct ipi_state {
+ uint32_t status;
+ uint32_t en;
+ uint32_t set;
+ uint32_t clear;
+ uint64_t buf[4];
+};
+
+struct loongson_kvm_ipi;
+
+struct ipi_io_device {
+ int node_id;
+ struct loongson_kvm_ipi *ipi;
+ struct kvm_io_device device;
+};
+
+struct loongson_kvm_ipi {
+ spinlock_t lock;
+ struct kvm *kvm;
+ struct ipi_state ipistate[16];
+ struct ipi_io_device dev_ipi[4];
+};
+#endif
+
struct kvm_arch {
/* Guest physical mm */
struct mm_struct gpa_mm;
/* Mask of CPUs needing GPA ASID flush */
cpumask_t asid_flush_mask;
+#ifdef CONFIG_CPU_LOONGSON64
+ struct loongson_kvm_ipi ipi;
+#endif
};
#define N_MIPS_COPROC_REGS 32
@@ -225,6 +260,7 @@ struct mips_coproc {
#define MIPS_CP0_WATCH_LO 18
#define MIPS_CP0_WATCH_HI 19
#define MIPS_CP0_TLB_XCONTEXT 20
+#define MIPS_CP0_DIAG 22
#define MIPS_CP0_ECC 26
#define MIPS_CP0_CACHE_ERR 27
#define MIPS_CP0_TAG_LO 28
@@ -276,8 +312,12 @@ enum emulation_result {
#define MIPS3_PG_SHIFT 6
#define MIPS3_PG_FRAME 0x3fffffc0
+#if defined(CONFIG_64BIT)
+#define VPN2_MASK GENMASK(cpu_vmbits - 1, 13)
+#else
#define VPN2_MASK 0xffffe000
-#define KVM_ENTRYHI_ASID MIPS_ENTRYHI_ASID
+#endif
+#define KVM_ENTRYHI_ASID cpu_asid_mask(&boot_cpu_data)
#define TLB_IS_GLOBAL(x) ((x).tlb_lo[0] & (x).tlb_lo[1] & ENTRYLO_G)
#define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK)
#define TLB_ASID(x) ((x).tlb_hi & KVM_ENTRYHI_ASID)
@@ -892,6 +932,10 @@ void kvm_vz_save_guesttlb(struct kvm_mips_tlb *buf, unsigned int index,
unsigned int count);
void kvm_vz_load_guesttlb(const struct kvm_mips_tlb *buf, unsigned int index,
unsigned int count);
+#ifdef CONFIG_CPU_LOONGSON64
+void kvm_loongson_clear_guest_vtlb(void);
+void kvm_loongson_clear_guest_ftlb(void);
+#endif
#endif
void kvm_mips_suspend_mm(int cpu);
@@ -1131,6 +1175,8 @@ extern int kvm_mips_trans_mtc0(union mips_instruction inst, u32 *opc,
/* Misc */
extern void kvm_mips_dump_stats(struct kvm_vcpu *vcpu);
extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);
+extern int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
+ struct kvm_mips_interrupt *irq);
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 796dbb86575b..20d6d40c59a4 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -1038,6 +1038,8 @@
/* Disable Branch Return Cache */
#define R10K_DIAG_D_BRC (_ULCAST_(1) << 22)
+/* Flush BTB */
+#define LOONGSON_DIAG_BTB (_ULCAST_(1) << 1)
/* Flush ITLB */
#define LOONGSON_DIAG_ITLB (_ULCAST_(1) << 2)
/* Flush DTLB */
@@ -2874,7 +2876,9 @@ __BUILD_SET_C0(status)
__BUILD_SET_C0(cause)
__BUILD_SET_C0(config)
__BUILD_SET_C0(config5)
+__BUILD_SET_C0(config6)
__BUILD_SET_C0(config7)
+__BUILD_SET_C0(diag)
__BUILD_SET_C0(intcontrol)
__BUILD_SET_C0(intctl)
__BUILD_SET_C0(srsmap)
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 98f97c85e059..43d1faa02933 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -1012,6 +1012,16 @@ struct loongson3_lsdc2_format { /* Loongson-3 overridden ldc2/sdc2 Load/Store fo
;))))))
};
+struct loongson3_lscsr_format { /* Loongson-3 CPUCFG&CSR read/write format */
+ __BITFIELD_FIELD(unsigned int opcode : 6,
+ __BITFIELD_FIELD(unsigned int rs : 5,
+ __BITFIELD_FIELD(unsigned int fr : 5,
+ __BITFIELD_FIELD(unsigned int rd : 5,
+ __BITFIELD_FIELD(unsigned int fd : 5,
+ __BITFIELD_FIELD(unsigned int func : 6,
+ ;))))))
+};
+
/*
* MIPS16e instruction formats (16-bit length)
*/
@@ -1114,6 +1124,7 @@ union mips_instruction {
struct mm16_r5_format mm16_r5_format;
struct loongson3_lswc2_format loongson3_lswc2_format;
struct loongson3_lsdc2_format loongson3_lsdc2_format;
+ struct loongson3_lscsr_format loongson3_lscsr_format;
};
union mips16e_instruction {
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 6b93162d7c5a..def1659fe262 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -2017,8 +2017,10 @@ static inline void decode_cpucfg(struct cpuinfo_mips *c)
if (cfg2 & LOONGSON_CFG2_LEXT2)
c->ases |= MIPS_ASE_LOONGSON_EXT2;
- if (cfg2 & LOONGSON_CFG2_LSPW)
+ if (cfg2 & LOONGSON_CFG2_LSPW) {
c->options |= MIPS_CPU_LDPTE;
+ c->guest.options |= MIPS_CPU_LDPTE;
+ }
if (cfg3 & LOONGSON_CFG3_LCAMP)
c->ases |= MIPS_ASE_LOONGSON_CAM;
@@ -2074,6 +2076,7 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
+ c->ases &= ~MIPS_ASE_VZ; /* VZ of Loongson-3A2000/3000 is incomplete */
break;
case PRID_IMP_LOONGSON_64G:
c->cputype = CPU_LOONGSON64;
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig
index b91d145aa2d5..d697752a5723 100644
--- a/arch/mips/kvm/Kconfig
+++ b/arch/mips/kvm/Kconfig
@@ -22,6 +22,7 @@ config KVM
select EXPORT_UASM
select PREEMPT_NOTIFIERS
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
+ select HAVE_KVM_EVENTFD
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_MMIO
select MMU_NOTIFIER
diff --git a/arch/mips/kvm/Makefile b/arch/mips/kvm/Makefile
index 01affc1d21c5..506c4ac0ba1c 100644
--- a/arch/mips/kvm/Makefile
+++ b/arch/mips/kvm/Makefile
@@ -2,7 +2,7 @@
# Makefile for KVM support for MIPS
#
-common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
+common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o eventfd.o)
EXTRA_CFLAGS += -Ivirt/kvm -Iarch/mips/kvm
@@ -13,6 +13,9 @@ kvm-objs := $(common-objs-y) mips.o emulate.o entry.o \
fpu.o
kvm-objs += hypcall.o
kvm-objs += mmu.o
+ifdef CONFIG_CPU_LOONGSON64
+kvm-objs += loongson_ipi.o
+endif
ifdef CONFIG_KVM_MIPS_VZ
kvm-objs += vz.o
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index 7ccf9b096783..5ae82d925197 100644
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -1600,9 +1600,11 @@ enum emulation_result kvm_mips_emulate_store(union mips_instruction inst,
struct kvm_run *run,
struct kvm_vcpu *vcpu)
{
+ int r;
enum emulation_result er;
u32 rt;
void *data = run->mmio.data;
+ unsigned int imme;
unsigned long curr_pc;
/*
@@ -1660,15 +1662,229 @@ enum emulation_result kvm_mips_emulate_store(union mips_instruction inst,
vcpu->arch.gprs[rt], *(u8 *)data);
break;
+ case swl_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x3);
+ run->mmio.len = 4;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x3;
+ switch (imme) {
+ case 0:
+ *(u32 *)data = ((*(u32 *)data) & 0xffffff00) |
+ (vcpu->arch.gprs[rt] >> 24);
+ break;
+ case 1:
+ *(u32 *)data = ((*(u32 *)data) & 0xffff0000) |
+ (vcpu->arch.gprs[rt] >> 16);
+ break;
+ case 2:
+ *(u32 *)data = ((*(u32 *)data) & 0xff000000) |
+ (vcpu->arch.gprs[rt] >> 8);
+ break;
+ case 3:
+ *(u32 *)data = vcpu->arch.gprs[rt];
+ break;
+ default:
+ break;
+ }
+
+ kvm_debug("[%#lx] OP_SWL: eaddr: %#lx, gpr: %#lx, data: %#x\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u32 *)data);
+ break;
+
+ case swr_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x3);
+ run->mmio.len = 4;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x3;
+ switch (imme) {
+ case 0:
+ *(u32 *)data = vcpu->arch.gprs[rt];
+ break;
+ case 1:
+ *(u32 *)data = ((*(u32 *)data) & 0xff) |
+ (vcpu->arch.gprs[rt] << 8);
+ break;
+ case 2:
+ *(u32 *)data = ((*(u32 *)data) & 0xffff) |
+ (vcpu->arch.gprs[rt] << 16);
+ break;
+ case 3:
+ *(u32 *)data = ((*(u32 *)data) & 0xffffff) |
+ (vcpu->arch.gprs[rt] << 24);
+ break;
+ default:
+ break;
+ }
+
+ kvm_debug("[%#lx] OP_SWR: eaddr: %#lx, gpr: %#lx, data: %#x\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u32 *)data);
+ break;
+
+ case sdl_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x7);
+
+ run->mmio.len = 8;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x7;
+ switch (imme) {
+ case 0:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffffffff00) |
+ ((vcpu->arch.gprs[rt] >> 56) & 0xff);
+ break;
+ case 1:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffffff0000) |
+ ((vcpu->arch.gprs[rt] >> 48) & 0xffff);
+ break;
+ case 2:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffff000000) |
+ ((vcpu->arch.gprs[rt] >> 40) & 0xffffff);
+ break;
+ case 3:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffff00000000) |
+ ((vcpu->arch.gprs[rt] >> 32) & 0xffffffff);
+ break;
+ case 4:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffff0000000000) |
+ ((vcpu->arch.gprs[rt] >> 24) & 0xffffffffff);
+ break;
+ case 5:
+ *(u64 *)data = ((*(u64 *)data) & 0xffff000000000000) |
+ ((vcpu->arch.gprs[rt] >> 16) & 0xffffffffffff);
+ break;
+ case 6:
+ *(u64 *)data = ((*(u64 *)data) & 0xff00000000000000) |
+ ((vcpu->arch.gprs[rt] >> 8) & 0xffffffffffffff);
+ break;
+ case 7:
+ *(u64 *)data = vcpu->arch.gprs[rt];
+ break;
+ default:
+ break;
+ }
+
+ kvm_debug("[%#lx] OP_SDL: eaddr: %#lx, gpr: %#lx, data: %llx\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u64 *)data);
+ break;
+
+ case sdr_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x7);
+
+ run->mmio.len = 8;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x7;
+ switch (imme) {
+ case 0:
+ *(u64 *)data = vcpu->arch.gprs[rt];
+ break;
+ case 1:
+ *(u64 *)data = ((*(u64 *)data) & 0xff) |
+ (vcpu->arch.gprs[rt] << 8);
+ break;
+ case 2:
+ *(u64 *)data = ((*(u64 *)data) & 0xffff) |
+ (vcpu->arch.gprs[rt] << 16);
+ break;
+ case 3:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffff) |
+ (vcpu->arch.gprs[rt] << 24);
+ break;
+ case 4:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffff) |
+ (vcpu->arch.gprs[rt] << 32);
+ break;
+ case 5:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffff) |
+ (vcpu->arch.gprs[rt] << 40);
+ break;
+ case 6:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffffff) |
+ (vcpu->arch.gprs[rt] << 48);
+ break;
+ case 7:
+ *(u64 *)data = ((*(u64 *)data) & 0xffffffffffffff) |
+ (vcpu->arch.gprs[rt] << 56);
+ break;
+ default:
+ break;
+ }
+
+ kvm_debug("[%#lx] OP_SDR: eaddr: %#lx, gpr: %#lx, data: %llx\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u64 *)data);
+ break;
+
+#ifdef CONFIG_CPU_LOONGSON64
+ case sdc2_op:
+ rt = inst.loongson3_lsdc2_format.rt;
+ switch (inst.loongson3_lsdc2_format.opcode1) {
+ /*
+ * Loongson-3 overridden sdc2 instructions.
+ * opcode1 instruction
+ * 0x0 gssbx: store 1 bytes from GPR
+ * 0x1 gsshx: store 2 bytes from GPR
+ * 0x2 gsswx: store 4 bytes from GPR
+ * 0x3 gssdx: store 8 bytes from GPR
+ */
+ case 0x0:
+ run->mmio.len = 1;
+ *(u8 *)data = vcpu->arch.gprs[rt];
+
+ kvm_debug("[%#lx] OP_GSSBX: eaddr: %#lx, gpr: %#lx, data: %#x\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u8 *)data);
+ break;
+ case 0x1:
+ run->mmio.len = 2;
+ *(u16 *)data = vcpu->arch.gprs[rt];
+
+ kvm_debug("[%#lx] OP_GSSSHX: eaddr: %#lx, gpr: %#lx, data: %#x\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u16 *)data);
+ break;
+ case 0x2:
+ run->mmio.len = 4;
+ *(u32 *)data = vcpu->arch.gprs[rt];
+
+ kvm_debug("[%#lx] OP_GSSWX: eaddr: %#lx, gpr: %#lx, data: %#x\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u32 *)data);
+ break;
+ case 0x3:
+ run->mmio.len = 8;
+ *(u64 *)data = vcpu->arch.gprs[rt];
+
+ kvm_debug("[%#lx] OP_GSSDX: eaddr: %#lx, gpr: %#lx, data: %#llx\n",
+ vcpu->arch.pc, vcpu->arch.host_cp0_badvaddr,
+ vcpu->arch.gprs[rt], *(u64 *)data);
+ break;
+ default:
+ kvm_err("Godson Exteneded GS-Store not yet supported (inst=0x%08x)\n",
+ inst.word);
+ break;
+ }
+ break;
+#endif
default:
kvm_err("Store not yet supported (inst=0x%08x)\n",
inst.word);
goto out_fail;
}
- run->mmio.is_write = 1;
vcpu->mmio_needed = 1;
+ run->mmio.is_write = 1;
vcpu->mmio_is_write = 1;
+
+ r = kvm_io_bus_write(vcpu, KVM_MMIO_BUS,
+ run->mmio.phys_addr, run->mmio.len, data);
+
+ if (!r) {
+ vcpu->mmio_needed = 0;
+ return EMULATE_DONE;
+ }
+
return EMULATE_DO_MMIO;
out_fail:
@@ -1681,9 +1897,11 @@ enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
u32 cause, struct kvm_run *run,
struct kvm_vcpu *vcpu)
{
+ int r;
enum emulation_result er;
unsigned long curr_pc;
u32 op, rt;
+ unsigned int imme;
rt = inst.i_format.rt;
op = inst.i_format.opcode;
@@ -1736,6 +1954,162 @@ enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
run->mmio.len = 1;
break;
+ case lwl_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x3);
+
+ run->mmio.len = 4;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x3;
+ switch (imme) {
+ case 0:
+ vcpu->mmio_needed = 3; /* 1 byte */
+ break;
+ case 1:
+ vcpu->mmio_needed = 4; /* 2 bytes */
+ break;
+ case 2:
+ vcpu->mmio_needed = 5; /* 3 bytes */
+ break;
+ case 3:
+ vcpu->mmio_needed = 6; /* 4 bytes */
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case lwr_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x3);
+
+ run->mmio.len = 4;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x3;
+ switch (imme) {
+ case 0:
+ vcpu->mmio_needed = 7; /* 4 bytes */
+ break;
+ case 1:
+ vcpu->mmio_needed = 8; /* 3 bytes */
+ break;
+ case 2:
+ vcpu->mmio_needed = 9; /* 2 bytes */
+ break;
+ case 3:
+ vcpu->mmio_needed = 10; /* 1 byte */
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case ldl_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x7);
+
+ run->mmio.len = 8;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x7;
+ switch (imme) {
+ case 0:
+ vcpu->mmio_needed = 11; /* 1 byte */
+ break;
+ case 1:
+ vcpu->mmio_needed = 12; /* 2 bytes */
+ break;
+ case 2:
+ vcpu->mmio_needed = 13; /* 3 bytes */
+ break;
+ case 3:
+ vcpu->mmio_needed = 14; /* 4 bytes */
+ break;
+ case 4:
+ vcpu->mmio_needed = 15; /* 5 bytes */
+ break;
+ case 5:
+ vcpu->mmio_needed = 16; /* 6 bytes */
+ break;
+ case 6:
+ vcpu->mmio_needed = 17; /* 7 bytes */
+ break;
+ case 7:
+ vcpu->mmio_needed = 18; /* 8 bytes */
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case ldr_op:
+ run->mmio.phys_addr = kvm_mips_callbacks->gva_to_gpa(
+ vcpu->arch.host_cp0_badvaddr) & (~0x7);
+
+ run->mmio.len = 8;
+ imme = vcpu->arch.host_cp0_badvaddr & 0x7;
+ switch (imme) {
+ case 0:
+ vcpu->mmio_needed = 19; /* 8 bytes */
+ break;
+ case 1:
+ vcpu->mmio_needed = 20; /* 7 bytes */
+ break;
+ case 2:
+ vcpu->mmio_needed = 21; /* 6 bytes */
+ break;
+ case 3:
+ vcpu->mmio_needed = 22; /* 5 bytes */
+ break;
+ case 4:
+ vcpu->mmio_needed = 23; /* 4 bytes */
+ break;
+ case 5:
+ vcpu->mmio_needed = 24; /* 3 bytes */
+ break;
+ case 6:
+ vcpu->mmio_needed = 25; /* 2 bytes */
+ break;
+ case 7:
+ vcpu->mmio_needed = 26; /* 1 byte */
+ break;
+ default:
+ break;
+ }
+ break;
+
+#ifdef CONFIG_CPU_LOONGSON64
+ case ldc2_op:
+ rt = inst.loongson3_lsdc2_format.rt;
+ switch (inst.loongson3_lsdc2_format.opcode1) {
+ /*
+ * Loongson-3 overridden ldc2 instructions.
+ * opcode1 instruction
+ * 0x0 gslbx: store 1 bytes from GPR
+ * 0x1 gslhx: store 2 bytes from GPR
+ * 0x2 gslwx: store 4 bytes from GPR
+ * 0x3 gsldx: store 8 bytes from GPR
+ */
+ case 0x0:
+ run->mmio.len = 1;
+ vcpu->mmio_needed = 27; /* signed */
+ break;
+ case 0x1:
+ run->mmio.len = 2;
+ vcpu->mmio_needed = 28; /* signed */
+ break;
+ case 0x2:
+ run->mmio.len = 4;
+ vcpu->mmio_needed = 29; /* signed */
+ break;
+ case 0x3:
+ run->mmio.len = 8;
+ vcpu->mmio_needed = 30; /* signed */
+ break;
+ default:
+ kvm_err("Godson Exteneded GS-Load for float not yet supported (inst=0x%08x)\n",
+ inst.word);
+ break;
+ }
+ break;
+#endif
+
default:
kvm_err("Load not yet supported (inst=0x%08x)\n",
inst.word);
@@ -1745,6 +2119,16 @@ enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
run->mmio.is_write = 0;
vcpu->mmio_is_write = 0;
+
+ r = kvm_io_bus_read(vcpu, KVM_MMIO_BUS,
+ run->mmio.phys_addr, run->mmio.len, run->mmio.data);
+
+ if (!r) {
+ kvm_mips_complete_mmio_load(vcpu, run);
+ vcpu->mmio_needed = 0;
+ return EMULATE_DONE;
+ }
+
return EMULATE_DO_MMIO;
}
@@ -2591,28 +2975,125 @@ enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
switch (run->mmio.len) {
case 8:
- *gpr = *(s64 *)run->mmio.data;
+ switch (vcpu->mmio_needed) {
+ case 11:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffffffff) |
+ (((*(s64 *)run->mmio.data) & 0xff) << 56);
+ break;
+ case 12:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffffff) |
+ (((*(s64 *)run->mmio.data) & 0xffff) << 48);
+ break;
+ case 13:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffff) |
+ (((*(s64 *)run->mmio.data) & 0xffffff) << 40);
+ break;
+ case 14:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffff) |
+ (((*(s64 *)run->mmio.data) & 0xffffffff) << 32);
+ break;
+ case 15:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffff) |
+ (((*(s64 *)run->mmio.data) & 0xffffffffff) << 24);
+ break;
+ case 16:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffff) |
+ (((*(s64 *)run->mmio.data) & 0xffffffffffff) << 16);
+ break;
+ case 17:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xff) |
+ (((*(s64 *)run->mmio.data) & 0xffffffffffffff) << 8);
+ break;
+ case 18:
+ case 19:
+ *gpr = *(s64 *)run->mmio.data;
+ break;
+ case 20:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xff00000000000000) |
+ ((((*(s64 *)run->mmio.data)) >> 8) & 0xffffffffffffff);
+ break;
+ case 21:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffff000000000000) |
+ ((((*(s64 *)run->mmio.data)) >> 16) & 0xffffffffffff);
+ break;
+ case 22:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffff0000000000) |
+ ((((*(s64 *)run->mmio.data)) >> 24) & 0xffffffffff);
+ break;
+ case 23:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffff00000000) |
+ ((((*(s64 *)run->mmio.data)) >> 32) & 0xffffffff);
+ break;
+ case 24:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffff000000) |
+ ((((*(s64 *)run->mmio.data)) >> 40) & 0xffffff);
+ break;
+ case 25:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffffff0000) |
+ ((((*(s64 *)run->mmio.data)) >> 48) & 0xffff);
+ break;
+ case 26:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffffffffffff00) |
+ ((((*(s64 *)run->mmio.data)) >> 56) & 0xff);
+ break;
+ default:
+ *gpr = *(s64 *)run->mmio.data;
+ }
break;
case 4:
- if (vcpu->mmio_needed == 2)
- *gpr = *(s32 *)run->mmio.data;
- else
+ switch (vcpu->mmio_needed) {
+ case 1:
*gpr = *(u32 *)run->mmio.data;
+ break;
+ case 2:
+ *gpr = *(s32 *)run->mmio.data;
+ break;
+ case 3:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffff) |
+ (((*(s32 *)run->mmio.data) & 0xff) << 24);
+ break;
+ case 4:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffff) |
+ (((*(s32 *)run->mmio.data) & 0xffff) << 16);
+ break;
+ case 5:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xff) |
+ (((*(s32 *)run->mmio.data) & 0xffffff) << 8);
+ break;
+ case 6:
+ case 7:
+ *gpr = *(s32 *)run->mmio.data;
+ break;
+ case 8:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xff000000) |
+ ((((*(s32 *)run->mmio.data)) >> 8) & 0xffffff);
+ break;
+ case 9:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffff0000) |
+ ((((*(s32 *)run->mmio.data)) >> 16) & 0xffff);
+ break;
+ case 10:
+ *gpr = (vcpu->arch.gprs[vcpu->arch.io_gpr] & 0xffffff00) |
+ ((((*(s32 *)run->mmio.data)) >> 24) & 0xff);
+ break;
+ default:
+ *gpr = *(s32 *)run->mmio.data;
+ }
break;
case 2:
- if (vcpu->mmio_needed == 2)
- *gpr = *(s16 *) run->mmio.data;
- else
+ if (vcpu->mmio_needed == 1)
*gpr = *(u16 *)run->mmio.data;
+ else
+ *gpr = *(s16 *)run->mmio.data;
break;
case 1:
- if (vcpu->mmio_needed == 2)
- *gpr = *(s8 *) run->mmio.data;
+ if (vcpu->mmio_needed == 1)
+ *gpr = *(u8 *)run->mmio.data;
else
- *gpr = *(u8 *) run->mmio.data;
+ *gpr = *(s8 *)run->mmio.data;
break;
}
diff --git a/arch/mips/kvm/entry.c b/arch/mips/kvm/entry.c
index 16e1c93b484f..fd716942e302 100644
--- a/arch/mips/kvm/entry.c
+++ b/arch/mips/kvm/entry.c
@@ -56,6 +56,7 @@
#define C0_BADVADDR 8, 0
#define C0_BADINSTR 8, 1
#define C0_BADINSTRP 8, 2
+#define C0_PGD 9, 7
#define C0_ENTRYHI 10, 0
#define C0_GUESTCTL1 10, 4
#define C0_STATUS 12, 0
@@ -307,7 +308,10 @@ static void *kvm_mips_build_enter_guest(void *addr)
#ifdef CONFIG_KVM_MIPS_VZ
/* Save normal linux process pgd (VZ guarantees pgd_reg is set) */
- UASM_i_MFC0(&p, K0, c0_kscratch(), pgd_reg);
+ if (cpu_has_ldpte)
+ UASM_i_MFC0(&p, K0, C0_PWBASE);
+ else
+ UASM_i_MFC0(&p, K0, c0_kscratch(), pgd_reg);
UASM_i_SW(&p, K0, offsetof(struct kvm_vcpu_arch, host_pgd), K1);
/*
@@ -469,8 +473,10 @@ void *kvm_mips_build_tlb_refill_exception(void *addr, void *handler)
u32 *p = addr;
struct uasm_label labels[2];
struct uasm_reloc relocs[2];
+#ifndef CONFIG_CPU_LOONGSON64
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
+#endif
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -490,6 +496,16 @@ void *kvm_mips_build_tlb_refill_exception(void *addr, void *handler)
*/
preempt_disable();
+#ifdef CONFIG_CPU_LOONGSON64
+ UASM_i_MFC0(&p, K1, C0_PGD);
+ uasm_i_lddir(&p, K0, K1, 3); /* global page dir */
+#ifndef __PAGETABLE_PMD_FOLDED
+ uasm_i_lddir(&p, K1, K0, 1); /* middle page dir */
+#endif
+ uasm_i_ldpte(&p, K1, 0); /* even */
+ uasm_i_ldpte(&p, K1, 1); /* odd */
+ uasm_i_tlbwr(&p);
+#else
/*
* Now for the actual refill bit. A lot of this can be common with the
* Linux TLB refill handler, however we don't need to handle so many
@@ -512,6 +528,7 @@ void *kvm_mips_build_tlb_refill_exception(void *addr, void *handler)
build_get_ptep(&p, K0, K1);
build_update_entries(&p, K0, K1);
build_tlb_write_entry(&p, &l, &r, tlb_random);
+#endif
preempt_enable();
diff --git a/arch/mips/kvm/interrupt.c b/arch/mips/kvm/interrupt.c
index 7257e8b6f5a9..d28c2c9c343e 100644
--- a/arch/mips/kvm/interrupt.c
+++ b/arch/mips/kvm/interrupt.c
@@ -61,27 +61,8 @@ void kvm_mips_queue_io_int_cb(struct kvm_vcpu *vcpu,
* the EXC code will be set when we are actually
* delivering the interrupt:
*/
- switch (intr) {
- case 2:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ0));
- /* Queue up an INT exception for the core */
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case 3:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ1));
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case 4:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ2));
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_set_c0_guest_cause(vcpu->arch.cop0, 1 << (intr + 8));
+ kvm_mips_queue_irq(vcpu, kvm_irq_to_priority(intr));
}
void kvm_mips_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
@@ -89,26 +70,8 @@ void kvm_mips_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
{
int intr = (int)irq->irq;
- switch (intr) {
- case -2:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ0));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case -3:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ1));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case -4:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ2));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_clear_c0_guest_cause(vcpu->arch.cop0, 1 << (-intr + 8));
+ kvm_mips_dequeue_irq(vcpu, kvm_irq_to_priority(-intr));
}
/* Deliver the interrupt of the corresponding priority, if possible. */
@@ -116,50 +79,20 @@ int kvm_mips_irq_deliver_cb(struct kvm_vcpu *vcpu, unsigned int priority,
u32 cause)
{
int allowed = 0;
- u32 exccode;
+ u32 exccode, ie;
struct kvm_vcpu_arch *arch = &vcpu->arch;
struct mips_coproc *cop0 = vcpu->arch.cop0;
- switch (priority) {
- case MIPS_EXC_INT_TIMER:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ5)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- case MIPS_EXC_INT_IO:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ0)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- case MIPS_EXC_INT_IPI_1:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ1)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- case MIPS_EXC_INT_IPI_2:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ2)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
+ if (priority == MIPS_EXC_MAX)
+ return 0;
- default:
- break;
+ ie = 1 << (kvm_priority_to_irq[priority] + 8);
+ if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
+ && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
+ && (kvm_read_c0_guest_status(cop0) & ie)) {
+ allowed = 1;
+ exccode = EXCCODE_INT;
}
/* Are we allowed to deliver the interrupt ??? */
diff --git a/arch/mips/kvm/interrupt.h b/arch/mips/kvm/interrupt.h
index 3bf0a49725e8..c3e878ca3e07 100644
--- a/arch/mips/kvm/interrupt.h
+++ b/arch/mips/kvm/interrupt.h
@@ -21,11 +21,12 @@
#define MIPS_EXC_NMI 5
#define MIPS_EXC_MCHK 6
#define MIPS_EXC_INT_TIMER 7
-#define MIPS_EXC_INT_IO 8
-#define MIPS_EXC_EXECUTE 9
-#define MIPS_EXC_INT_IPI_1 10
-#define MIPS_EXC_INT_IPI_2 11
-#define MIPS_EXC_MAX 12
+#define MIPS_EXC_INT_IO_1 8
+#define MIPS_EXC_INT_IO_2 9
+#define MIPS_EXC_EXECUTE 10
+#define MIPS_EXC_INT_IPI_1 11
+#define MIPS_EXC_INT_IPI_2 12
+#define MIPS_EXC_MAX 13
/* XXXSL More to follow */
#define C_TI (_ULCAST_(1) << 30)
@@ -38,6 +39,9 @@
#define KVM_MIPS_IRQ_CLEAR_ALL_AT_ONCE (0)
#endif
+extern u32 *kvm_priority_to_irq;
+u32 kvm_irq_to_priority(u32 irq);
+
void kvm_mips_queue_irq(struct kvm_vcpu *vcpu, unsigned int priority);
void kvm_mips_dequeue_irq(struct kvm_vcpu *vcpu, unsigned int priority);
int kvm_mips_pending_timer(struct kvm_vcpu *vcpu);
diff --git a/arch/mips/kvm/loongson_ipi.c b/arch/mips/kvm/loongson_ipi.c
new file mode 100644
index 000000000000..3681fc8fba38
--- /dev/null
+++ b/arch/mips/kvm/loongson_ipi.c
@@ -0,0 +1,214 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Loongson-3 Virtual IPI interrupt support.
+ *
+ * Copyright (C) 2019 Loongson Technologies, Inc. All rights reserved.
+ *
+ * Authors: Chen Zhu <zhuchen@loongson.cn>
+ * Authors: Huacai Chen <chenhc@lemote.com>
+ */
+
+#include <linux/kvm_host.h>
+
+#define IPI_BASE 0x3ff01000ULL
+
+#define CORE0_STATUS_OFF 0x000
+#define CORE0_EN_OFF 0x004
+#define CORE0_SET_OFF 0x008
+#define CORE0_CLEAR_OFF 0x00c
+#define CORE0_BUF_20 0x020
+#define CORE0_BUF_28 0x028
+#define CORE0_BUF_30 0x030
+#define CORE0_BUF_38 0x038
+
+#define CORE1_STATUS_OFF 0x100
+#define CORE1_EN_OFF 0x104
+#define CORE1_SET_OFF 0x108
+#define CORE1_CLEAR_OFF 0x10c
+#define CORE1_BUF_20 0x120
+#define CORE1_BUF_28 0x128
+#define CORE1_BUF_30 0x130
+#define CORE1_BUF_38 0x138
+
+#define CORE2_STATUS_OFF 0x200
+#define CORE2_EN_OFF 0x204
+#define CORE2_SET_OFF 0x208
+#define CORE2_CLEAR_OFF 0x20c
+#define CORE2_BUF_20 0x220
+#define CORE2_BUF_28 0x228
+#define CORE2_BUF_30 0x230
+#define CORE2_BUF_38 0x238
+
+#define CORE3_STATUS_OFF 0x300
+#define CORE3_EN_OFF 0x304
+#define CORE3_SET_OFF 0x308
+#define CORE3_CLEAR_OFF 0x30c
+#define CORE3_BUF_20 0x320
+#define CORE3_BUF_28 0x328
+#define CORE3_BUF_30 0x330
+#define CORE3_BUF_38 0x338
+
+static int loongson_vipi_read(struct loongson_kvm_ipi *ipi,
+ gpa_t addr, int len, void *val)
+{
+ uint32_t core = (addr >> 8) & 3;
+ uint32_t node = (addr >> 44) & 3;
+ uint32_t id = core + node * 4;
+ uint64_t offset = addr & 0xff;
+ void *pbuf;
+ struct ipi_state *s = &(ipi->ipistate[id]);
+
+ BUG_ON(offset & (len - 1));
+
+ switch (offset) {
+ case CORE0_STATUS_OFF:
+ *(uint64_t *)val = s->status;
+ break;
+
+ case CORE0_EN_OFF:
+ *(uint64_t *)val = s->en;
+ break;
+
+ case CORE0_SET_OFF:
+ *(uint64_t *)val = 0;
+ break;
+
+ case CORE0_CLEAR_OFF:
+ *(uint64_t *)val = 0;
+ break;
+
+ case CORE0_BUF_20 ... CORE0_BUF_38:
+ pbuf = (void *)s->buf + (offset - 0x20);
+ if (len == 8)
+ *(uint64_t *)val = *(uint64_t *)pbuf;
+ else /* Assume len == 4 */
+ *(uint32_t *)val = *(uint32_t *)pbuf;
+ break;
+
+ default:
+ pr_notice("%s with unknown addr %llx\n", __func__, addr);
+ break;
+ }
+
+ return 0;
+}
+
+static int loongson_vipi_write(struct loongson_kvm_ipi *ipi,
+ gpa_t addr, int len, const void *val)
+{
+ uint32_t core = (addr >> 8) & 3;
+ uint32_t node = (addr >> 44) & 3;
+ uint32_t id = core + node * 4;
+ uint64_t data, offset = addr & 0xff;
+ void *pbuf;
+ struct kvm *kvm = ipi->kvm;
+ struct kvm_mips_interrupt irq;
+ struct ipi_state *s = &(ipi->ipistate[id]);
+
+ data = *(uint64_t *)val;
+ BUG_ON(offset & (len - 1));
+
+ switch (offset) {
+ case CORE0_STATUS_OFF:
+ break;
+
+ case CORE0_EN_OFF:
+ s->en = data;
+ break;
+
+ case CORE0_SET_OFF:
+ s->status |= data;
+ irq.cpu = id;
+ irq.irq = 6;
+ kvm_vcpu_ioctl_interrupt(kvm->vcpus[id], &irq);
+ break;
+
+ case CORE0_CLEAR_OFF:
+ s->status &= ~data;
+ if (!s->status) {
+ irq.cpu = id;
+ irq.irq = -6;
+ kvm_vcpu_ioctl_interrupt(kvm->vcpus[id], &irq);
+ }
+ break;
+
+ case CORE0_BUF_20 ... CORE0_BUF_38:
+ pbuf = (void *)s->buf + (offset - 0x20);
+ if (len == 8)
+ *(uint64_t *)pbuf = (uint64_t)data;
+ else /* Assume len == 4 */
+ *(uint32_t *)pbuf = (uint32_t)data;
+ break;
+
+ default:
+ pr_notice("%s with unknown addr %llx\n", __func__, addr);
+ break;
+ }
+
+ return 0;
+}
+
+static int kvm_ipi_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+ gpa_t addr, int len, void *val)
+{
+ unsigned long flags;
+ struct loongson_kvm_ipi *ipi;
+ struct ipi_io_device *ipi_device;
+
+ ipi_device = container_of(dev, struct ipi_io_device, device);
+ ipi = ipi_device->ipi;
+
+ spin_lock_irqsave(&ipi->lock, flags);
+ loongson_vipi_read(ipi, addr, len, val);
+ spin_unlock_irqrestore(&ipi->lock, flags);
+
+ return 0;
+}
+
+static int kvm_ipi_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+ gpa_t addr, int len, const void *val)
+{
+ unsigned long flags;
+ struct loongson_kvm_ipi *ipi;
+ struct ipi_io_device *ipi_device;
+
+ ipi_device = container_of(dev, struct ipi_io_device, device);
+ ipi = ipi_device->ipi;
+
+ spin_lock_irqsave(&ipi->lock, flags);
+ loongson_vipi_write(ipi, addr, len, val);
+ spin_unlock_irqrestore(&ipi->lock, flags);
+
+ return 0;
+}
+
+static const struct kvm_io_device_ops kvm_ipi_ops = {
+ .read = kvm_ipi_read,
+ .write = kvm_ipi_write,
+};
+
+void kvm_init_loongson_ipi(struct kvm *kvm)
+{
+ int i;
+ unsigned long addr;
+ struct loongson_kvm_ipi *s;
+ struct kvm_io_device *device;
+
+ s = &kvm->arch.ipi;
+ s->kvm = kvm;
+ spin_lock_init(&s->lock);
+
+ /*
+ * Initialize IPI device
+ */
+ for (i = 0; i < 4; i++) {
+ device = &s->dev_ipi[i].device;
+ kvm_iodevice_init(device, &kvm_ipi_ops);
+ addr = (((unsigned long)i) << 44) + IPI_BASE;
+ mutex_lock(&kvm->slots_lock);
+ kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, addr, 0x400, device);
+ mutex_unlock(&kvm->slots_lock);
+ s->dev_ipi[i].ipi = s;
+ s->dev_ipi[i].node_id = i;
+ }
+}
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 2416fa40b687..521bd5891e84 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -67,6 +67,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
VCPU_STAT("vz_ghfc", vz_ghfc_exits),
VCPU_STAT("vz_gpa", vz_gpa_exits),
VCPU_STAT("vz_resvd", vz_resvd_exits),
+ VCPU_STAT("vz_cpucfg", vz_cpucfg_exits),
#endif
VCPU_STAT("halt_successful_poll", halt_successful_poll),
VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
@@ -129,6 +130,8 @@ int kvm_arch_check_processor_compat(void *opaque)
return 0;
}
+extern void kvm_init_loongson_ipi(struct kvm *kvm);
+
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
switch (type) {
@@ -148,6 +151,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
if (!kvm->arch.gpa_mm.pgd)
return -ENOMEM;
+#ifdef CONFIG_CPU_LOONGSON64
+ kvm_init_loongson_ipi(kvm);
+#endif
+
return 0;
}
@@ -490,7 +497,10 @@ int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
int intr = (int)irq->irq;
struct kvm_vcpu *dvcpu = NULL;
- if (intr == 3 || intr == -3 || intr == 4 || intr == -4)
+ if (intr == kvm_priority_to_irq[MIPS_EXC_INT_IPI_1] ||
+ intr == kvm_priority_to_irq[MIPS_EXC_INT_IPI_2] ||
+ intr == (-kvm_priority_to_irq[MIPS_EXC_INT_IPI_1]) ||
+ intr == (-kvm_priority_to_irq[MIPS_EXC_INT_IPI_2]))
kvm_debug("%s: CPU: %d, INTR: %d\n", __func__, irq->cpu,
(int)intr);
@@ -499,10 +509,10 @@ int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
else
dvcpu = vcpu->kvm->vcpus[irq->cpu];
- if (intr == 2 || intr == 3 || intr == 4) {
+ if (intr == 2 || intr == 3 || intr == 4 || intr == 6) {
kvm_mips_callbacks->queue_io_int(dvcpu, irq);
- } else if (intr == -2 || intr == -3 || intr == -4) {
+ } else if (intr == -2 || intr == -3 || intr == -4 || intr == -6) {
kvm_mips_callbacks->dequeue_io_int(dvcpu, irq);
} else {
kvm_err("%s: invalid interrupt ioctl (%d:%d)\n", __func__,
@@ -1620,6 +1630,34 @@ static struct notifier_block kvm_mips_csr_die_notifier = {
.notifier_call = kvm_mips_csr_die_notify,
};
+static u32 kvm_default_priority_to_irq[MIPS_EXC_MAX] = {
+ [MIPS_EXC_INT_TIMER] = C_IRQ5,
+ [MIPS_EXC_INT_IO_1] = C_IRQ0,
+ [MIPS_EXC_INT_IPI_1] = C_IRQ1,
+ [MIPS_EXC_INT_IPI_2] = C_IRQ2,
+};
+
+static u32 kvm_loongson3_priority_to_irq[MIPS_EXC_MAX] = {
+ [MIPS_EXC_INT_TIMER] = C_IRQ5,
+ [MIPS_EXC_INT_IO_1] = C_IRQ0,
+ [MIPS_EXC_INT_IO_2] = C_IRQ1,
+ [MIPS_EXC_INT_IPI_1] = C_IRQ4,
+};
+
+u32 *kvm_priority_to_irq = kvm_default_priority_to_irq;
+
+u32 kvm_irq_to_priority(u32 irq)
+{
+ int i;
+
+ for (i = MIPS_EXC_INT_TIMER; i < MIPS_EXC_MAX; i++) {
+ if (kvm_priority_to_irq[i] == (1 << (irq + 8)))
+ return i;
+ }
+
+ return MIPS_EXC_MAX;
+}
+
static int __init kvm_mips_init(void)
{
int ret;
@@ -1638,6 +1676,9 @@ static int __init kvm_mips_init(void)
if (ret)
return ret;
+ if (boot_cpu_type() == CPU_LOONGSON64)
+ kvm_priority_to_irq = kvm_loongson3_priority_to_irq;
+
register_die_notifier(&kvm_mips_csr_die_notifier);
return 0;
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
index fc8aee05d10b..1c1fbce3f566 100644
--- a/arch/mips/kvm/tlb.c
+++ b/arch/mips/kvm/tlb.c
@@ -20,6 +20,7 @@
#include <asm/cpu.h>
#include <asm/bootinfo.h>
+#include <asm/mipsregs.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
#include <asm/tlb.h>
@@ -621,6 +622,46 @@ void kvm_vz_load_guesttlb(const struct kvm_mips_tlb *buf, unsigned int index,
}
EXPORT_SYMBOL_GPL(kvm_vz_load_guesttlb);
+#ifdef CONFIG_CPU_LOONGSON64
+void kvm_loongson_clear_guest_vtlb(void)
+{
+ int idx = read_gc0_index();
+
+ /* Set root GuestID for root probe and write of guest TLB entry */
+ set_root_gid_to_guest_gid();
+
+ write_gc0_index(0);
+ guest_tlbinvf();
+ write_gc0_index(idx);
+
+ clear_root_gid();
+ set_c0_diag(LOONGSON_DIAG_ITLB | LOONGSON_DIAG_DTLB);
+}
+EXPORT_SYMBOL_GPL(kvm_loongson_clear_guest_vtlb);
+
+void kvm_loongson_clear_guest_ftlb(void)
+{
+ int i;
+ int idx = read_gc0_index();
+
+ /* Set root GuestID for root probe and write of guest TLB entry */
+ set_root_gid_to_guest_gid();
+
+ for (i = current_cpu_data.tlbsizevtlb;
+ i < (current_cpu_data.tlbsizevtlb +
+ current_cpu_data.tlbsizeftlbsets);
+ i++) {
+ write_gc0_index(i);
+ guest_tlbinvf();
+ }
+ write_gc0_index(idx);
+
+ clear_root_gid();
+ set_c0_diag(LOONGSON_DIAG_ITLB | LOONGSON_DIAG_DTLB);
+}
+EXPORT_SYMBOL_GPL(kvm_loongson_clear_guest_ftlb);
+#endif
+
#endif
/**
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 60763efa723e..34ad0b46e610 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -529,6 +529,9 @@ static int kvm_trap_emul_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_MIPS_TE:
r = 1;
break;
+ case KVM_CAP_IOEVENTFD:
+ r = 1;
+ break;
default:
r = 0;
break;
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index 51f51009a53f..d9c462c14163 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -29,6 +29,7 @@
#include <linux/kvm_host.h>
#include "interrupt.h"
+#include "loongson_regs.h"
#include "trace.h"
@@ -126,6 +127,11 @@ static inline unsigned int kvm_vz_config5_guest_wrmask(struct kvm_vcpu *vcpu)
return mask;
}
+static inline unsigned int kvm_vz_config6_guest_wrmask(struct kvm_vcpu *vcpu)
+{
+ return MIPS_CONF6_LOONGSON_INTIMER | MIPS_CONF6_LOONGSON_EXTIMER;
+}
+
/*
* VZ optionally allows these additional Config bits to be written by root:
* Config: M, [MT]
@@ -180,6 +186,12 @@ static inline unsigned int kvm_vz_config5_user_wrmask(struct kvm_vcpu *vcpu)
return kvm_vz_config5_guest_wrmask(vcpu) | MIPS_CONF5_MRP;
}
+static inline unsigned int kvm_vz_config6_user_wrmask(struct kvm_vcpu *vcpu)
+{
+ return kvm_vz_config6_guest_wrmask(vcpu) |
+ MIPS_CONF6_LOONGSON_SFBEN | MIPS_CONF6_LOONGSON_FTLBDIS;
+}
+
static gpa_t kvm_vz_gva_to_gpa_cb(gva_t gva)
{
/* VZ guest has already converted gva to gpa */
@@ -225,23 +237,7 @@ static void kvm_vz_queue_io_int_cb(struct kvm_vcpu *vcpu,
* interrupts are asynchronous to vcpu execution therefore defer guest
* cp0 accesses
*/
- switch (intr) {
- case 2:
- kvm_vz_queue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case 3:
- kvm_vz_queue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case 4:
- kvm_vz_queue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_vz_queue_irq(vcpu, kvm_irq_to_priority(intr));
}
static void kvm_vz_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
@@ -253,44 +249,22 @@ static void kvm_vz_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
* interrupts are asynchronous to vcpu execution therefore defer guest
* cp0 accesses
*/
- switch (intr) {
- case -2:
- kvm_vz_dequeue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case -3:
- kvm_vz_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case -4:
- kvm_vz_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_vz_dequeue_irq(vcpu, kvm_irq_to_priority(-intr));
}
-static u32 kvm_vz_priority_to_irq[MIPS_EXC_MAX] = {
- [MIPS_EXC_INT_TIMER] = C_IRQ5,
- [MIPS_EXC_INT_IO] = C_IRQ0,
- [MIPS_EXC_INT_IPI_1] = C_IRQ1,
- [MIPS_EXC_INT_IPI_2] = C_IRQ2,
-};
-
static int kvm_vz_irq_deliver_cb(struct kvm_vcpu *vcpu, unsigned int priority,
u32 cause)
{
u32 irq = (priority < MIPS_EXC_MAX) ?
- kvm_vz_priority_to_irq[priority] : 0;
+ kvm_priority_to_irq[priority] : 0;
switch (priority) {
case MIPS_EXC_INT_TIMER:
set_gc0_cause(C_TI);
break;
- case MIPS_EXC_INT_IO:
+ case MIPS_EXC_INT_IO_1:
+ case MIPS_EXC_INT_IO_2:
case MIPS_EXC_INT_IPI_1:
case MIPS_EXC_INT_IPI_2:
if (cpu_has_guestctl2)
@@ -311,7 +285,7 @@ static int kvm_vz_irq_clear_cb(struct kvm_vcpu *vcpu, unsigned int priority,
u32 cause)
{
u32 irq = (priority < MIPS_EXC_MAX) ?
- kvm_vz_priority_to_irq[priority] : 0;
+ kvm_priority_to_irq[priority] : 0;
switch (priority) {
case MIPS_EXC_INT_TIMER:
@@ -329,7 +303,8 @@ static int kvm_vz_irq_clear_cb(struct kvm_vcpu *vcpu, unsigned int priority,
}
break;
- case MIPS_EXC_INT_IO:
+ case MIPS_EXC_INT_IO_1:
+ case MIPS_EXC_INT_IO_2:
case MIPS_EXC_INT_IPI_1:
case MIPS_EXC_INT_IPI_2:
/* Clear GuestCtl2.VIP irq if not using Hardware Clear */
@@ -966,7 +941,8 @@ static enum emulation_result kvm_vz_gpsi_cop0(union mips_instruction inst,
(sel == 2 || /* SRSCtl */
sel == 3)) || /* SRSMap */
(rd == MIPS_CP0_CONFIG &&
- (sel == 7)) || /* Config7 */
+ (sel == 6 || /* Config6 */
+ sel == 7)) || /* Config7 */
(rd == MIPS_CP0_LLADDR &&
(sel == 2) && /* MAARI */
cpu_guest_has_maar &&
@@ -974,6 +950,11 @@ static enum emulation_result kvm_vz_gpsi_cop0(union mips_instruction inst,
(rd == MIPS_CP0_ERRCTL &&
(sel == 0))) { /* ErrCtl */
val = cop0->reg[rd][sel];
+#ifdef CONFIG_CPU_LOONGSON64
+ } else if (rd == MIPS_CP0_DIAG &&
+ (sel == 0)) { /* Diag */
+ val = cop0->reg[rd][sel];
+#endif
} else {
val = 0;
er = EMULATE_FAIL;
@@ -1036,9 +1017,40 @@ static enum emulation_result kvm_vz_gpsi_cop0(union mips_instruction inst,
cpu_guest_has_maar &&
!cpu_guest_has_dyn_maar) {
kvm_write_maari(vcpu, val);
+ } else if (rd == MIPS_CP0_CONFIG &&
+ (sel == 6)) {
+ cop0->reg[rd][sel] = (int)val;
} else if (rd == MIPS_CP0_ERRCTL &&
(sel == 0)) { /* ErrCtl */
/* ignore the written value */
+#ifdef CONFIG_CPU_LOONGSON64
+ } else if (rd == MIPS_CP0_DIAG &&
+ (sel == 0)) { /* Diag */
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (val & LOONGSON_DIAG_BTB) {
+ /* Flush BTB */
+ set_c0_diag(LOONGSON_DIAG_BTB);
+ }
+ if (val & LOONGSON_DIAG_ITLB) {
+ /* Flush ITLB */
+ set_c0_diag(LOONGSON_DIAG_ITLB);
+ }
+ if (val & LOONGSON_DIAG_DTLB) {
+ /* Flush DTLB */
+ set_c0_diag(LOONGSON_DIAG_DTLB);
+ }
+ if (val & LOONGSON_DIAG_VTLB) {
+ /* Flush VTLB */
+ kvm_loongson_clear_guest_vtlb();
+ }
+ if (val & LOONGSON_DIAG_FTLB) {
+ /* Flush FTLB */
+ kvm_loongson_clear_guest_ftlb();
+ }
+ local_irq_restore(flags);
+#endif
} else {
er = EMULATE_FAIL;
}
@@ -1129,6 +1141,77 @@ static enum emulation_result kvm_vz_gpsi_cache(union mips_instruction inst,
return EMULATE_FAIL;
}
+#ifdef CONFIG_CPU_LOONGSON64
+static enum emulation_result kvm_vz_gpsi_lwc2(union mips_instruction inst,
+ u32 *opc, u32 cause,
+ struct kvm_run *run,
+ struct kvm_vcpu *vcpu)
+{
+ unsigned int rs, rd;
+ unsigned int hostcfg;
+ unsigned long curr_pc;
+ enum emulation_result er = EMULATE_DONE;
+
+ /*
+ * Update PC and hold onto current PC in case there is
+ * an error and we want to rollback the PC
+ */
+ curr_pc = vcpu->arch.pc;
+ er = update_pc(vcpu, cause);
+ if (er == EMULATE_FAIL)
+ return er;
+
+ rs = inst.loongson3_lscsr_format.rs;
+ rd = inst.loongson3_lscsr_format.rd;
+ switch (inst.loongson3_lscsr_format.fr) {
+ case 0x8: /* Read CPUCFG */
+ ++vcpu->stat.vz_cpucfg_exits;
+ hostcfg = read_cpucfg(vcpu->arch.gprs[rs]);
+
+ switch (vcpu->arch.gprs[rs]) {
+ case LOONGSON_CFG0:
+ vcpu->arch.gprs[rd] = 0x14c000;
+ break;
+ case LOONGSON_CFG1:
+ hostcfg &= (LOONGSON_CFG1_FP | LOONGSON_CFG1_MMI |
+ LOONGSON_CFG1_MSA1 | LOONGSON_CFG1_MSA2 |
+ LOONGSON_CFG1_SFBP);
+ vcpu->arch.gprs[rd] = hostcfg;
+ break;
+ case LOONGSON_CFG2:
+ hostcfg &= (LOONGSON_CFG2_LEXT1 | LOONGSON_CFG2_LEXT2 |
+ LOONGSON_CFG2_LEXT3 | LOONGSON_CFG2_LSPW);
+ vcpu->arch.gprs[rd] = hostcfg;
+ break;
+ case LOONGSON_CFG3:
+ vcpu->arch.gprs[rd] = hostcfg;
+ break;
+ default:
+ /* Don't export any other advanced features to guest */
+ vcpu->arch.gprs[rd] = 0;
+ break;
+ }
+ break;
+
+ default:
+ kvm_err("lwc2 emulate not impl %d rs %lx @%lx\n",
+ inst.loongson3_lscsr_format.fr, vcpu->arch.gprs[rs], curr_pc);
+ er = EMULATE_FAIL;
+ break;
+ }
+
+ /* Rollback PC only if emulation was unsuccessful */
+ if (er == EMULATE_FAIL) {
+ kvm_err("[%#lx]%s: unsupported lwc2 instruction 0x%08x 0x%08x\n",
+ curr_pc, __func__, inst.word, inst.loongson3_lscsr_format.fr);
+
+ vcpu->arch.pc = curr_pc;
+ }
+
+ return er;
+}
+#endif
+
static enum emulation_result kvm_trap_vz_handle_gpsi(u32 cause, u32 *opc,
struct kvm_vcpu *vcpu)
{
@@ -1158,6 +1241,11 @@ static enum emulation_result kvm_trap_vz_handle_gpsi(u32 cause, u32 *opc,
er = kvm_vz_gpsi_cache(inst, opc, cause, run, vcpu);
break;
#endif
+#ifdef CONFIG_CPU_LOONGSON64
+ case lwc2_op:
+ er = kvm_vz_gpsi_lwc2(inst, opc, cause, run, vcpu);
+ break;
+#endif
case spec3_op:
switch (inst.spec3_format.func) {
#ifdef CONFIG_CPU_MIPSR6
@@ -1652,6 +1740,7 @@ static u64 kvm_vz_get_one_regs[] = {
KVM_REG_MIPS_CP0_CONFIG3,
KVM_REG_MIPS_CP0_CONFIG4,
KVM_REG_MIPS_CP0_CONFIG5,
+ KVM_REG_MIPS_CP0_CONFIG6,
#ifdef CONFIG_64BIT
KVM_REG_MIPS_CP0_XCONTEXT,
#endif
@@ -1706,7 +1795,7 @@ static unsigned long kvm_vz_num_regs(struct kvm_vcpu *vcpu)
ret += ARRAY_SIZE(kvm_vz_get_one_regs_contextconfig);
if (cpu_guest_has_segments)
ret += ARRAY_SIZE(kvm_vz_get_one_regs_segments);
- if (cpu_guest_has_htw)
+ if (cpu_guest_has_htw || cpu_guest_has_ldpte)
ret += ARRAY_SIZE(kvm_vz_get_one_regs_htw);
if (cpu_guest_has_maar && !cpu_guest_has_dyn_maar)
ret += 1 + ARRAY_SIZE(vcpu->arch.maar);
@@ -1755,7 +1844,7 @@ static int kvm_vz_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices)
return -EFAULT;
indices += ARRAY_SIZE(kvm_vz_get_one_regs_segments);
}
- if (cpu_guest_has_htw) {
+ if (cpu_guest_has_htw || cpu_guest_has_ldpte) {
if (copy_to_user(indices, kvm_vz_get_one_regs_htw,
sizeof(kvm_vz_get_one_regs_htw)))
return -EFAULT;
@@ -1878,17 +1967,17 @@ static int kvm_vz_get_one_reg(struct kvm_vcpu *vcpu,
*v = read_gc0_segctl2();
break;
case KVM_REG_MIPS_CP0_PWBASE:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
*v = read_gc0_pwbase();
break;
case KVM_REG_MIPS_CP0_PWFIELD:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
*v = read_gc0_pwfield();
break;
case KVM_REG_MIPS_CP0_PWSIZE:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
*v = read_gc0_pwsize();
break;
@@ -1896,7 +1985,7 @@ static int kvm_vz_get_one_reg(struct kvm_vcpu *vcpu,
*v = (long)read_gc0_wired();
break;
case KVM_REG_MIPS_CP0_PWCTL:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
*v = read_gc0_pwctl();
break;
@@ -1979,6 +2068,9 @@ static int kvm_vz_get_one_reg(struct kvm_vcpu *vcpu,
return -EINVAL;
*v = read_gc0_config5();
break;
+ case KVM_REG_MIPS_CP0_CONFIG6:
+ *v = kvm_read_sw_gc0_config6(cop0);
+ break;
case KVM_REG_MIPS_CP0_MAAR(0) ... KVM_REG_MIPS_CP0_MAAR(0x3f):
if (!cpu_guest_has_maar || cpu_guest_has_dyn_maar)
return -EINVAL;
@@ -2101,17 +2193,17 @@ static int kvm_vz_set_one_reg(struct kvm_vcpu *vcpu,
write_gc0_segctl2(v);
break;
case KVM_REG_MIPS_CP0_PWBASE:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
write_gc0_pwbase(v);
break;
case KVM_REG_MIPS_CP0_PWFIELD:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
write_gc0_pwfield(v);
break;
case KVM_REG_MIPS_CP0_PWSIZE:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
write_gc0_pwsize(v);
break;
@@ -2119,7 +2211,7 @@ static int kvm_vz_set_one_reg(struct kvm_vcpu *vcpu,
change_gc0_wired(MIPSR6_WIRED_WIRED, v);
break;
case KVM_REG_MIPS_CP0_PWCTL:
- if (!cpu_guest_has_htw)
+ if (!cpu_guest_has_htw && !cpu_guest_has_ldpte)
return -EINVAL;
write_gc0_pwctl(v);
break;
@@ -2248,6 +2340,14 @@ static int kvm_vz_set_one_reg(struct kvm_vcpu *vcpu,
write_gc0_config5(v);
}
break;
+ case KVM_REG_MIPS_CP0_CONFIG6:
+ cur = kvm_read_sw_gc0_config6(cop0);
+ change = (cur ^ v) & kvm_vz_config6_user_wrmask(vcpu);
+ if (change) {
+ v = cur ^ change;
+ kvm_write_sw_gc0_config6(cop0, (int)v);
+ }
+ break;
case KVM_REG_MIPS_CP0_MAAR(0) ... KVM_REG_MIPS_CP0_MAAR(0x3f):
if (!cpu_guest_has_maar || cpu_guest_has_dyn_maar)
return -EINVAL;
@@ -2580,7 +2680,7 @@ static int kvm_vz_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
}
/* restore HTW registers */
- if (cpu_guest_has_htw) {
+ if (cpu_guest_has_htw || cpu_guest_has_ldpte) {
kvm_restore_gc0_pwbase(cop0);
kvm_restore_gc0_pwfield(cop0);
kvm_restore_gc0_pwsize(cop0);
@@ -2597,7 +2697,7 @@ static int kvm_vz_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
* prevents a SC on the next VCPU from succeeding by matching a LL on
* the previous VCPU.
*/
- if (cpu_guest_has_rw_llb)
+ if (vcpu->kvm->created_vcpus > 1)
write_gc0_lladdr(0);
return 0;
@@ -2685,8 +2785,8 @@ static int kvm_vz_vcpu_put(struct kvm_vcpu *vcpu, int cpu)
}
/* save HTW registers if enabled in guest */
- if (cpu_guest_has_htw &&
- kvm_read_sw_gc0_config3(cop0) & MIPS_CONF3_PW) {
+ if (cpu_guest_has_ldpte || (cpu_guest_has_htw &&
+ kvm_read_sw_gc0_config3(cop0) & MIPS_CONF3_PW)) {
kvm_save_gc0_pwbase(cop0);
kvm_save_gc0_pwfield(cop0);
kvm_save_gc0_pwsize(cop0);
@@ -2853,8 +2953,12 @@ static int kvm_vz_hardware_enable(void)
write_c0_guestctl0(MIPS_GCTL0_CP0 |
(MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) |
MIPS_GCTL0_CG | MIPS_GCTL0_CF);
- if (cpu_has_guestctl0ext)
- set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ if (cpu_has_guestctl0ext) {
+ if (current_cpu_type() != CPU_LOONGSON64)
+ set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ else
+ clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ }
if (cpu_has_guestid) {
write_c0_guestctl1(0);
@@ -2871,6 +2975,12 @@ static int kvm_vz_hardware_enable(void)
if (cpu_has_guestctl2)
clear_c0_guestctl2(0x3f << 10);
+#ifdef CONFIG_CPU_LOONGSON64
+ /* Control guest CCA attribute */
+ if (cpu_has_csr())
+ csr_writel(csr_readl(0xffffffec) | 0x1, 0xffffffec);
+#endif
+
return 0;
}
@@ -2927,6 +3037,9 @@ static int kvm_vz_check_extension(struct kvm *kvm, long ext)
r = 2;
break;
#endif
+ case KVM_CAP_IOEVENTFD:
+ r = 1;
+ break;
default:
r = 0;
break;
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index a42dd09c6578..d8a087cf2b42 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -252,6 +252,7 @@ static int do_signal(struct pt_regs *regs)
switch (retval) {
case ERESTART_RESTARTBLOCK:
restart = -2;
+ fallthrough;
case ERESTARTNOHAND:
case ERESTARTSYS:
case ERESTARTNOINTR:
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 8dd24c7692a0..d32ec9ae73bd 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -155,12 +155,11 @@ extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
-extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
- struct kvm_vcpu *vcpu, unsigned long addr,
- unsigned long status);
+extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu,
+ unsigned long addr, unsigned long status);
extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
unsigned long slb_v, unsigned long valid);
-extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu,
unsigned long gpa, gva_t ea, int is_store);
extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
@@ -174,8 +173,7 @@ extern void kvmppc_mmu_hpte_sysexit(void);
extern int kvmppc_mmu_hv_init(void);
extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
-extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
- struct kvm_vcpu *vcpu,
+extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
unsigned long ea, unsigned long dsisr);
extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid,
gva_t eaddr, void *to, void *from,
@@ -234,7 +232,7 @@ extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
bool upper, u32 val);
extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
-extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
+extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu);
extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
bool writing, bool *writable);
extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
@@ -300,12 +298,12 @@ void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1);
void kvmhv_release_all_nested(struct kvm *kvm);
long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu);
-int kvmhv_run_single_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu,
+int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu,
u64 time_limit, unsigned long lpcr);
void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
struct hv_guest_state *hr);
-long int kvmhv_nested_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu);
+long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu);
void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 337047ba4a56..7e2d061d0445 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -795,7 +795,6 @@ struct kvm_vcpu_arch {
struct mmio_hpte_cache_entry *pgfault_cache;
struct task_struct *run_task;
- struct kvm_run *kvm_run;
spinlock_t vpa_update_lock;
struct kvmppc_vpa vpa;
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 94f5a32acaf1..ccf66b3a4c1d 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -58,28 +58,28 @@ enum xlate_readwrite {
XLATE_WRITE /* check for write permissions */
};
-extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
-extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
+extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
+extern int __kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu);
extern void kvmppc_handler_highmem(void);
extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
-extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian);
-extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian);
-extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian, int mmio_sign_extend);
-extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes, int is_default_endian);
-extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
unsigned int rs, unsigned int bytes, int is_default_endian);
-extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_store(struct kvm_vcpu *vcpu,
u64 val, unsigned int bytes,
int is_default_endian);
-extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
int rs, unsigned int bytes,
int is_default_endian);
@@ -90,10 +90,9 @@ extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
bool data);
extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
bool data);
-extern int kvmppc_emulate_instruction(struct kvm_run *run,
- struct kvm_vcpu *vcpu);
+extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu);
extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
-extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
+extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu);
extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
@@ -267,7 +266,7 @@ struct kvmppc_ops {
void (*vcpu_put)(struct kvm_vcpu *vcpu);
void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
- int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
+ int (*vcpu_run)(struct kvm_vcpu *vcpu);
int (*vcpu_create)(struct kvm_vcpu *vcpu);
void (*vcpu_free)(struct kvm_vcpu *vcpu);
int (*check_requests)(struct kvm_vcpu *vcpu);
@@ -291,7 +290,7 @@ struct kvmppc_ops {
int (*init_vm)(struct kvm *kvm);
void (*destroy_vm)(struct kvm *kvm);
int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
- int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ int (*emulate_op)(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance);
int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 37508a356f28..41fedec69ac3 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -755,9 +755,9 @@ void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
}
EXPORT_SYMBOL_GPL(kvmppc_set_msr);
-int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
{
- return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
+ return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
}
int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
diff --git a/arch/powerpc/kvm/book3s.h b/arch/powerpc/kvm/book3s.h
index eae259ee49af..9b6323ec8e60 100644
--- a/arch/powerpc/kvm/book3s.h
+++ b/arch/powerpc/kvm/book3s.h
@@ -18,7 +18,7 @@ extern void kvm_set_spte_hva_hv(struct kvm *kvm, unsigned long hva, pte_t pte);
extern int kvmppc_mmu_init_pr(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_destroy_pr(struct kvm_vcpu *vcpu);
-extern int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
+extern int kvmppc_core_emulate_op_pr(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance);
extern int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu,
int sprn, ulong spr_val);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index ddfc4c90ebb6..7c5a1812a1c3 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -412,7 +412,7 @@ static int instruction_is_store(unsigned int instr)
return (instr & mask) != 0;
}
-int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu,
unsigned long gpa, gva_t ea, int is_store)
{
u32 last_inst;
@@ -472,10 +472,10 @@ int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->arch.paddr_accessed = gpa;
vcpu->arch.vaddr_accessed = ea;
- return kvmppc_emulate_mmio(run, vcpu);
+ return kvmppc_emulate_mmio(vcpu);
}
-int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu,
unsigned long ea, unsigned long dsisr)
{
struct kvm *kvm = vcpu->kvm;
@@ -498,7 +498,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
pte_t pte, *ptep;
if (kvm_is_radix(kvm))
- return kvmppc_book3s_radix_page_fault(run, vcpu, ea, dsisr);
+ return kvmppc_book3s_radix_page_fault(vcpu, ea, dsisr);
/*
* Real-mode code has already searched the HPT and found the
@@ -518,7 +518,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
gpa_base = r & HPTE_R_RPN & ~(psize - 1);
gfn_base = gpa_base >> PAGE_SHIFT;
gpa = gpa_base | (ea & (psize - 1));
- return kvmppc_hv_emulate_mmio(run, vcpu, gpa, ea,
+ return kvmppc_hv_emulate_mmio(vcpu, gpa, ea,
dsisr & DSISR_ISSTORE);
}
}
@@ -554,7 +554,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
/* No memslot means it's an emulated MMIO region */
if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID))
- return kvmppc_hv_emulate_mmio(run, vcpu, gpa, ea,
+ return kvmppc_hv_emulate_mmio(vcpu, gpa, ea,
dsisr & DSISR_ISSTORE);
/*
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c
index 2a2fad9a1c13..3cb0c9843d01 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -353,7 +353,13 @@ static struct kmem_cache *kvm_pmd_cache;
static pte_t *kvmppc_pte_alloc(void)
{
- return kmem_cache_alloc(kvm_pte_cache, GFP_KERNEL);
+ pte_t *pte;
+
+ pte = kmem_cache_alloc(kvm_pte_cache, GFP_KERNEL);
+ /* pmd_populate() will only reference _pa(pte). */
+ kmemleak_ignore(pte);
+
+ return pte;
}
static void kvmppc_pte_free(pte_t *ptep)
@@ -363,7 +369,13 @@ static void kvmppc_pte_free(pte_t *ptep)
static pmd_t *kvmppc_pmd_alloc(void)
{
- return kmem_cache_alloc(kvm_pmd_cache, GFP_KERNEL);
+ pmd_t *pmd;
+
+ pmd = kmem_cache_alloc(kvm_pmd_cache, GFP_KERNEL);
+ /* pud_populate() will only reference _pa(pmd). */
+ kmemleak_ignore(pmd);
+
+ return pmd;
}
static void kvmppc_pmd_free(pmd_t *pmdp)
@@ -417,9 +429,13 @@ void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
* Callers are responsible for flushing the PWC.
*
* When page tables are being unmapped/freed as part of page fault path
- * (full == false), ptes are not expected. There is code to unmap them
- * and emit a warning if encountered, but there may already be data
- * corruption due to the unexpected mappings.
+ * (full == false), valid ptes are generally not expected; however, there
+ * is one situation where they arise, which is when dirty page logging is
+ * turned off for a memslot while the VM is running. The new memslot
+ * becomes visible to page faults before the memslot commit function
+ * gets to flush the memslot, which can lead to a 2MB page mapping being
+ * installed for a guest physical address where there are already 64kB
+ * (or 4kB) mappings (of sub-pages of the same 2MB page).
*/
static void kvmppc_unmap_free_pte(struct kvm *kvm, pte_t *pte, bool full,
unsigned int lpid)
@@ -433,7 +449,6 @@ static void kvmppc_unmap_free_pte(struct kvm *kvm, pte_t *pte, bool full,
for (it = 0; it < PTRS_PER_PTE; ++it, ++p) {
if (pte_val(*p) == 0)
continue;
- WARN_ON_ONCE(1);
kvmppc_unmap_pte(kvm, p,
pte_pfn(*p) << PAGE_SHIFT,
PAGE_SHIFT, NULL, lpid);
@@ -891,7 +906,7 @@ int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
return ret;
}
-int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
unsigned long ea, unsigned long dsisr)
{
struct kvm *kvm = vcpu->kvm;
@@ -937,7 +952,7 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_core_queue_data_storage(vcpu, ea, dsisr);
return RESUME_GUEST;
}
- return kvmppc_hv_emulate_mmio(run, vcpu, gpa, ea, writing);
+ return kvmppc_hv_emulate_mmio(vcpu, gpa, ea, writing);
}
if (memslot->flags & KVM_MEM_READONLY) {
@@ -1142,6 +1157,11 @@ void kvmppc_radix_flush_memslot(struct kvm *kvm,
kvm->arch.lpid);
gpa += PAGE_SIZE;
}
+ /*
+ * Increase the mmu notifier sequence number to prevent any page
+ * fault that read the memslot earlier from writing a PTE.
+ */
+ kvm->mmu_notifier_seq++;
spin_unlock(&kvm->mmu_lock);
}
diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 50555ad1db93..1a529df0ab44 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -73,6 +73,7 @@ extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
struct kvmppc_spapr_tce_iommu_table *stit, *tmp;
struct iommu_table_group *table_group = NULL;
+ rcu_read_lock();
list_for_each_entry_rcu(stt, &kvm->arch.spapr_tce_tables, list) {
table_group = iommu_group_get_iommudata(grp);
@@ -87,7 +88,9 @@ extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
kref_put(&stit->kref, kvm_spapr_tce_liobn_put);
}
}
+ cond_resched_rcu();
}
+ rcu_read_unlock();
}
extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
@@ -105,12 +108,14 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
if (!f.file)
return -EBADF;
+ rcu_read_lock();
list_for_each_entry_rcu(stt, &kvm->arch.spapr_tce_tables, list) {
if (stt == f.file->private_data) {
found = true;
break;
}
}
+ rcu_read_unlock();
fdput(f);
@@ -143,6 +148,7 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
if (!tbl)
return -EINVAL;
+ rcu_read_lock();
list_for_each_entry_rcu(stit, &stt->iommu_tables, next) {
if (tbl != stit->tbl)
continue;
@@ -150,14 +156,17 @@ extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
if (!kref_get_unless_zero(&stit->kref)) {
/* stit is being destroyed */
iommu_tce_table_put(tbl);
+ rcu_read_unlock();
return -ENOTTY;
}
/*
* The table is already known to this KVM, we just increased
* its KVM reference counter and can return.
*/
+ rcu_read_unlock();
return 0;
}
+ rcu_read_unlock();
stit = kzalloc(sizeof(*stit), GFP_KERNEL);
if (!stit) {
@@ -365,18 +374,19 @@ static long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *stt,
if (kvmppc_tce_to_ua(stt->kvm, tce, &ua))
return H_TOO_HARD;
+ rcu_read_lock();
list_for_each_entry_rcu(stit, &stt->iommu_tables, next) {
unsigned long hpa = 0;
struct mm_iommu_table_group_mem_t *mem;
long shift = stit->tbl->it_page_shift;
mem = mm_iommu_lookup(stt->kvm->mm, ua, 1ULL << shift);
- if (!mem)
- return H_TOO_HARD;
-
- if (mm_iommu_ua_to_hpa(mem, ua, shift, &hpa))
+ if (!mem || mm_iommu_ua_to_hpa(mem, ua, shift, &hpa)) {
+ rcu_read_unlock();
return H_TOO_HARD;
+ }
}
+ rcu_read_unlock();
return H_SUCCESS;
}
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index dad71d276b91..0effd48c8f4d 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -235,7 +235,7 @@ void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val)
#endif
-int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_core_emulate_op_pr(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
@@ -371,13 +371,13 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE)
break;
- run->papr_hcall.nr = cmd;
+ vcpu->run->papr_hcall.nr = cmd;
for (i = 0; i < 9; ++i) {
ulong gpr = kvmppc_get_gpr(vcpu, 4 + i);
- run->papr_hcall.args[i] = gpr;
+ vcpu->run->papr_hcall.args[i] = gpr;
}
- run->exit_reason = KVM_EXIT_PAPR_HCALL;
+ vcpu->run->exit_reason = KVM_EXIT_PAPR_HCALL;
vcpu->arch.hcall_needed = 1;
emulated = EMULATE_EXIT_USER;
break;
@@ -629,7 +629,7 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
if (emulated == EMULATE_FAIL)
- emulated = kvmppc_emulate_paired_single(run, vcpu);
+ emulated = kvmppc_emulate_paired_single(vcpu);
return emulated;
}
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 7f5d58663f13..6bf66649ab92 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1094,9 +1094,14 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
ret = kvmppc_h_svm_init_done(vcpu->kvm);
break;
case H_SVM_INIT_ABORT:
- ret = H_UNSUPPORTED;
- if (kvmppc_get_srr1(vcpu) & MSR_S)
- ret = kvmppc_h_svm_init_abort(vcpu->kvm);
+ /*
+ * Even if that call is made by the Ultravisor, the SSR1 value
+ * is the guest context one, with the secure bit clear as it has
+ * not yet been secured. So we can't check it here.
+ * Instead the kvm->arch.secure_guest flag is checked inside
+ * kvmppc_h_svm_init_abort().
+ */
+ ret = kvmppc_h_svm_init_abort(vcpu->kvm);
break;
default:
@@ -1151,8 +1156,7 @@ static int kvmppc_hcall_impl_hv(unsigned long cmd)
return kvmppc_hcall_impl_hv_realmode(cmd);
}
-static int kvmppc_emulate_debug_inst(struct kvm_run *run,
- struct kvm_vcpu *vcpu)
+static int kvmppc_emulate_debug_inst(struct kvm_vcpu *vcpu)
{
u32 last_inst;
@@ -1166,8 +1170,8 @@ static int kvmppc_emulate_debug_inst(struct kvm_run *run,
}
if (last_inst == KVMPPC_INST_SW_BREAKPOINT) {
- run->exit_reason = KVM_EXIT_DEBUG;
- run->debug.arch.address = kvmppc_get_pc(vcpu);
+ vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+ vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
return RESUME_HOST;
} else {
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
@@ -1268,9 +1272,10 @@ static int kvmppc_emulate_doorbell_instr(struct kvm_vcpu *vcpu)
return RESUME_GUEST;
}
-static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
struct task_struct *tsk)
{
+ struct kvm_run *run = vcpu->run;
int r = RESUME_HOST;
vcpu->stat.sum_exits++;
@@ -1405,7 +1410,7 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
swab32(vcpu->arch.emul_inst) :
vcpu->arch.emul_inst;
if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) {
- r = kvmppc_emulate_debug_inst(run, vcpu);
+ r = kvmppc_emulate_debug_inst(vcpu);
} else {
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
r = RESUME_GUEST;
@@ -1457,7 +1462,7 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
return r;
}
-static int kvmppc_handle_nested_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
+static int kvmppc_handle_nested_exit(struct kvm_vcpu *vcpu)
{
int r;
int srcu_idx;
@@ -1515,7 +1520,7 @@ static int kvmppc_handle_nested_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
*/
case BOOK3S_INTERRUPT_H_DATA_STORAGE:
srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmhv_nested_page_fault(run, vcpu);
+ r = kvmhv_nested_page_fault(vcpu);
srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
break;
case BOOK3S_INTERRUPT_H_INST_STORAGE:
@@ -1525,7 +1530,7 @@ static int kvmppc_handle_nested_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
if (vcpu->arch.shregs.msr & HSRR1_HISI_WRITE)
vcpu->arch.fault_dsisr |= DSISR_ISSTORE;
srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmhv_nested_page_fault(run, vcpu);
+ r = kvmhv_nested_page_fault(vcpu);
srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
break;
@@ -2929,7 +2934,7 @@ static void post_guest_process(struct kvmppc_vcore *vc, bool is_master)
ret = RESUME_GUEST;
if (vcpu->arch.trap)
- ret = kvmppc_handle_exit_hv(vcpu->arch.kvm_run, vcpu,
+ ret = kvmppc_handle_exit_hv(vcpu,
vcpu->arch.run_task);
vcpu->arch.ret = ret;
@@ -3894,15 +3899,16 @@ static int kvmhv_setup_mmu(struct kvm_vcpu *vcpu)
return r;
}
-static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+static int kvmppc_run_vcpu(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
int n_ceded, i, r;
struct kvmppc_vcore *vc;
struct kvm_vcpu *v;
trace_kvmppc_run_vcpu_enter(vcpu);
- kvm_run->exit_reason = 0;
+ run->exit_reason = 0;
vcpu->arch.ret = RESUME_GUEST;
vcpu->arch.trap = 0;
kvmppc_update_vpas(vcpu);
@@ -3914,7 +3920,6 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
spin_lock(&vc->lock);
vcpu->arch.ceded = 0;
vcpu->arch.run_task = current;
- vcpu->arch.kvm_run = kvm_run;
vcpu->arch.stolen_logged = vcore_stolen_time(vc, mftb());
vcpu->arch.state = KVMPPC_VCPU_RUNNABLE;
vcpu->arch.busy_preempt = TB_NIL;
@@ -3947,8 +3952,8 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
r = kvmhv_setup_mmu(vcpu);
spin_lock(&vc->lock);
if (r) {
- kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
- kvm_run->fail_entry.
+ run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+ run->fail_entry.
hardware_entry_failure_reason = 0;
vcpu->arch.ret = r;
break;
@@ -3967,7 +3972,7 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
if (signal_pending(v->arch.run_task)) {
kvmppc_remove_runnable(vc, v);
v->stat.signal_exits++;
- v->arch.kvm_run->exit_reason = KVM_EXIT_INTR;
+ v->run->exit_reason = KVM_EXIT_INTR;
v->arch.ret = -EINTR;
wake_up(&v->arch.cpu_run);
}
@@ -4008,7 +4013,7 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) {
kvmppc_remove_runnable(vc, vcpu);
vcpu->stat.signal_exits++;
- kvm_run->exit_reason = KVM_EXIT_INTR;
+ run->exit_reason = KVM_EXIT_INTR;
vcpu->arch.ret = -EINTR;
}
@@ -4019,15 +4024,15 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
wake_up(&v->arch.cpu_run);
}
- trace_kvmppc_run_vcpu_exit(vcpu, kvm_run);
+ trace_kvmppc_run_vcpu_exit(vcpu);
spin_unlock(&vc->lock);
return vcpu->arch.ret;
}
-int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
- struct kvm_vcpu *vcpu, u64 time_limit,
+int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
unsigned long lpcr)
{
+ struct kvm_run *run = vcpu->run;
int trap, r, pcpu;
int srcu_idx, lpid;
struct kvmppc_vcore *vc;
@@ -4036,14 +4041,13 @@ int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
trace_kvmppc_run_vcpu_enter(vcpu);
- kvm_run->exit_reason = 0;
+ run->exit_reason = 0;
vcpu->arch.ret = RESUME_GUEST;
vcpu->arch.trap = 0;
vc = vcpu->arch.vcore;
vcpu->arch.ceded = 0;
vcpu->arch.run_task = current;
- vcpu->arch.kvm_run = kvm_run;
vcpu->arch.stolen_logged = vcore_stolen_time(vc, mftb());
vcpu->arch.state = KVMPPC_VCPU_RUNNABLE;
vcpu->arch.busy_preempt = TB_NIL;
@@ -4161,9 +4165,9 @@ int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
r = RESUME_GUEST;
if (trap) {
if (!nested)
- r = kvmppc_handle_exit_hv(kvm_run, vcpu, current);
+ r = kvmppc_handle_exit_hv(vcpu, current);
else
- r = kvmppc_handle_nested_exit(kvm_run, vcpu);
+ r = kvmppc_handle_nested_exit(vcpu);
}
vcpu->arch.ret = r;
@@ -4173,7 +4177,7 @@ int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
while (vcpu->arch.ceded && !kvmppc_vcpu_woken(vcpu)) {
if (signal_pending(current)) {
vcpu->stat.signal_exits++;
- kvm_run->exit_reason = KVM_EXIT_INTR;
+ run->exit_reason = KVM_EXIT_INTR;
vcpu->arch.ret = -EINTR;
break;
}
@@ -4189,13 +4193,13 @@ int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
done:
kvmppc_remove_runnable(vc, vcpu);
- trace_kvmppc_run_vcpu_exit(vcpu, kvm_run);
+ trace_kvmppc_run_vcpu_exit(vcpu);
return vcpu->arch.ret;
sigpend:
vcpu->stat.signal_exits++;
- kvm_run->exit_reason = KVM_EXIT_INTR;
+ run->exit_reason = KVM_EXIT_INTR;
vcpu->arch.ret = -EINTR;
out:
local_irq_enable();
@@ -4203,8 +4207,9 @@ int kvmhv_run_single_vcpu(struct kvm_run *kvm_run,
goto done;
}
-static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
+static int kvmppc_vcpu_run_hv(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
int r;
int srcu_idx;
unsigned long ebb_regs[3] = {}; /* shut up GCC */
@@ -4288,10 +4293,10 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
*/
if (kvm->arch.threads_indep && kvm_is_radix(kvm) &&
!no_mixing_hpt_and_radix)
- r = kvmhv_run_single_vcpu(run, vcpu, ~(u64)0,
+ r = kvmhv_run_single_vcpu(vcpu, ~(u64)0,
vcpu->arch.vcore->lpcr);
else
- r = kvmppc_run_vcpu(run, vcpu);
+ r = kvmppc_run_vcpu(vcpu);
if (run->exit_reason == KVM_EXIT_PAPR_HCALL &&
!(vcpu->arch.shregs.msr & MSR_PR)) {
@@ -4301,7 +4306,7 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
kvmppc_core_prepare_to_enter(vcpu);
} else if (r == RESUME_PAGE_FAULT) {
srcu_idx = srcu_read_lock(&kvm->srcu);
- r = kvmppc_book3s_hv_page_fault(run, vcpu,
+ r = kvmppc_book3s_hv_page_fault(vcpu,
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
srcu_read_unlock(&kvm->srcu, srcu_idx);
} else if (r == RESUME_PASSTHROUGH) {
@@ -4975,7 +4980,7 @@ static void kvmppc_core_destroy_vm_hv(struct kvm *kvm)
}
/* We don't need to emulate any privileged instructions or dcbz */
-static int kvmppc_core_emulate_op_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_core_emulate_op_hv(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
return EMULATE_FAIL;
diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c
index a221cae792dc..0989751c9d5e 100644
--- a/arch/powerpc/kvm/book3s_hv_nested.c
+++ b/arch/powerpc/kvm/book3s_hv_nested.c
@@ -290,8 +290,7 @@ long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu)
r = RESUME_HOST;
break;
}
- r = kvmhv_run_single_vcpu(vcpu->arch.kvm_run, vcpu, hdec_exp,
- lpcr);
+ r = kvmhv_run_single_vcpu(vcpu, hdec_exp, lpcr);
} while (is_kvmppc_resume_guest(r));
/* save L2 state for return */
@@ -1270,8 +1269,7 @@ static inline int kvmppc_radix_shift_to_level(int shift)
}
/* called with gp->tlb_lock held */
-static long int __kvmhv_nested_page_fault(struct kvm_run *run,
- struct kvm_vcpu *vcpu,
+static long int __kvmhv_nested_page_fault(struct kvm_vcpu *vcpu,
struct kvm_nested_guest *gp)
{
struct kvm *kvm = vcpu->kvm;
@@ -1354,7 +1352,7 @@ static long int __kvmhv_nested_page_fault(struct kvm_run *run,
}
/* passthrough of emulated MMIO case */
- return kvmppc_hv_emulate_mmio(run, vcpu, gpa, ea, writing);
+ return kvmppc_hv_emulate_mmio(vcpu, gpa, ea, writing);
}
if (memslot->flags & KVM_MEM_READONLY) {
if (writing) {
@@ -1429,8 +1427,7 @@ static long int __kvmhv_nested_page_fault(struct kvm_run *run,
rmapp = &memslot->arch.rmap[gfn - memslot->base_gfn];
ret = kvmppc_create_pte(kvm, gp->shadow_pgtable, pte, n_gpa, level,
mmu_seq, gp->shadow_lpid, rmapp, &n_rmap);
- if (n_rmap)
- kfree(n_rmap);
+ kfree(n_rmap);
if (ret == -EAGAIN)
ret = RESUME_GUEST; /* Let the guest try again */
@@ -1441,13 +1438,13 @@ static long int __kvmhv_nested_page_fault(struct kvm_run *run,
return RESUME_GUEST;
}
-long int kvmhv_nested_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu)
+long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu)
{
struct kvm_nested_guest *gp = vcpu->arch.nested;
long int ret;
mutex_lock(&gp->tlb_lock);
- ret = __kvmhv_nested_page_fault(run, vcpu, gp);
+ ret = __kvmhv_nested_page_fault(vcpu, gp);
mutex_unlock(&gp->tlb_lock);
return ret;
}
diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c
index f91224ea034a..09d8119024db 100644
--- a/arch/powerpc/kvm/book3s_hv_uvmem.c
+++ b/arch/powerpc/kvm/book3s_hv_uvmem.c
@@ -749,6 +749,20 @@ static u64 kvmppc_get_secmem_size(void)
const __be32 *prop;
u64 size = 0;
+ /*
+ * First try the new ibm,secure-memory nodes which supersede the
+ * secure-memory-ranges property.
+ * If we found some, no need to read the deprecated ones.
+ */
+ for_each_compatible_node(np, NULL, "ibm,secure-memory") {
+ prop = of_get_property(np, "reg", &len);
+ if (!prop)
+ continue;
+ size += of_read_number(prop + 2, 2);
+ }
+ if (size)
+ return size;
+
np = of_find_compatible_node(NULL, NULL, "ibm,uv-firmware");
if (!np)
goto out;
diff --git a/arch/powerpc/kvm/book3s_paired_singles.c b/arch/powerpc/kvm/book3s_paired_singles.c
index bf0282775e37..a11436720a8c 100644
--- a/arch/powerpc/kvm/book3s_paired_singles.c
+++ b/arch/powerpc/kvm/book3s_paired_singles.c
@@ -169,7 +169,7 @@ static void kvmppc_inject_pf(struct kvm_vcpu *vcpu, ulong eaddr, bool is_store)
kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
}
-static int kvmppc_emulate_fpr_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_emulate_fpr_load(struct kvm_vcpu *vcpu,
int rs, ulong addr, int ls_type)
{
int emulated = EMULATE_FAIL;
@@ -188,7 +188,7 @@ static int kvmppc_emulate_fpr_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_inject_pf(vcpu, addr, false);
goto done_load;
} else if (r == EMULATE_DO_MMIO) {
- emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FPR | rs,
+ emulated = kvmppc_handle_load(vcpu, KVM_MMIO_REG_FPR | rs,
len, 1);
goto done_load;
}
@@ -213,7 +213,7 @@ done_load:
return emulated;
}
-static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_emulate_fpr_store(struct kvm_vcpu *vcpu,
int rs, ulong addr, int ls_type)
{
int emulated = EMULATE_FAIL;
@@ -248,7 +248,7 @@ static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (r < 0) {
kvmppc_inject_pf(vcpu, addr, true);
} else if (r == EMULATE_DO_MMIO) {
- emulated = kvmppc_handle_store(run, vcpu, val, len, 1);
+ emulated = kvmppc_handle_store(vcpu, val, len, 1);
} else {
emulated = EMULATE_DONE;
}
@@ -259,7 +259,7 @@ static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
return emulated;
}
-static int kvmppc_emulate_psq_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_emulate_psq_load(struct kvm_vcpu *vcpu,
int rs, ulong addr, bool w, int i)
{
int emulated = EMULATE_FAIL;
@@ -279,12 +279,12 @@ static int kvmppc_emulate_psq_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
kvmppc_inject_pf(vcpu, addr, false);
goto done_load;
} else if ((r == EMULATE_DO_MMIO) && w) {
- emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FPR | rs,
+ emulated = kvmppc_handle_load(vcpu, KVM_MMIO_REG_FPR | rs,
4, 1);
vcpu->arch.qpr[rs] = tmp[1];
goto done_load;
} else if (r == EMULATE_DO_MMIO) {
- emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FQPR | rs,
+ emulated = kvmppc_handle_load(vcpu, KVM_MMIO_REG_FQPR | rs,
8, 1);
goto done_load;
}
@@ -302,7 +302,7 @@ done_load:
return emulated;
}
-static int kvmppc_emulate_psq_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_emulate_psq_store(struct kvm_vcpu *vcpu,
int rs, ulong addr, bool w, int i)
{
int emulated = EMULATE_FAIL;
@@ -318,10 +318,10 @@ static int kvmppc_emulate_psq_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (r < 0) {
kvmppc_inject_pf(vcpu, addr, true);
} else if ((r == EMULATE_DO_MMIO) && w) {
- emulated = kvmppc_handle_store(run, vcpu, tmp[0], 4, 1);
+ emulated = kvmppc_handle_store(vcpu, tmp[0], 4, 1);
} else if (r == EMULATE_DO_MMIO) {
u64 val = ((u64)tmp[0] << 32) | tmp[1];
- emulated = kvmppc_handle_store(run, vcpu, val, 8, 1);
+ emulated = kvmppc_handle_store(vcpu, val, 8, 1);
} else {
emulated = EMULATE_DONE;
}
@@ -618,7 +618,7 @@ static int kvmppc_ps_one_in(struct kvm_vcpu *vcpu, bool rc,
return EMULATE_DONE;
}
-int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
+int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu)
{
u32 inst;
enum emulation_result emulated = EMULATE_DONE;
@@ -680,7 +680,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 17, 19);
addr += get_d_signext(inst);
- emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_load(vcpu, ax_rd, addr, w, i);
break;
}
case OP_PSQ_LU:
@@ -690,7 +690,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 17, 19);
addr += get_d_signext(inst);
- emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_load(vcpu, ax_rd, addr, w, i);
if (emulated == EMULATE_DONE)
kvmppc_set_gpr(vcpu, ax_ra, addr);
@@ -703,7 +703,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 17, 19);
addr += get_d_signext(inst);
- emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_store(vcpu, ax_rd, addr, w, i);
break;
}
case OP_PSQ_STU:
@@ -713,7 +713,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 17, 19);
addr += get_d_signext(inst);
- emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_store(vcpu, ax_rd, addr, w, i);
if (emulated == EMULATE_DONE)
kvmppc_set_gpr(vcpu, ax_ra, addr);
@@ -733,7 +733,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 22, 24);
addr += kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_load(vcpu, ax_rd, addr, w, i);
break;
}
case OP_4X_PS_CMPO0:
@@ -747,7 +747,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 22, 24);
addr += kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_load(vcpu, ax_rd, addr, w, i);
if (emulated == EMULATE_DONE)
kvmppc_set_gpr(vcpu, ax_ra, addr);
@@ -824,7 +824,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 22, 24);
addr += kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_store(vcpu, ax_rd, addr, w, i);
break;
}
case OP_4XW_PSQ_STUX:
@@ -834,7 +834,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
int i = inst_get_field(inst, 22, 24);
addr += kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
+ emulated = kvmppc_emulate_psq_store(vcpu, ax_rd, addr, w, i);
if (emulated == EMULATE_DONE)
kvmppc_set_gpr(vcpu, ax_ra, addr);
@@ -922,7 +922,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd, addr,
FPU_LS_SINGLE);
break;
}
@@ -930,7 +930,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd, addr,
FPU_LS_SINGLE);
if (emulated == EMULATE_DONE)
@@ -941,7 +941,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd, addr,
FPU_LS_DOUBLE);
break;
}
@@ -949,7 +949,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd, addr,
FPU_LS_DOUBLE);
if (emulated == EMULATE_DONE)
@@ -960,7 +960,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd, addr,
FPU_LS_SINGLE);
break;
}
@@ -968,7 +968,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd, addr,
FPU_LS_SINGLE);
if (emulated == EMULATE_DONE)
@@ -979,7 +979,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd, addr,
FPU_LS_DOUBLE);
break;
}
@@ -987,7 +987,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd, addr,
FPU_LS_DOUBLE);
if (emulated == EMULATE_DONE)
@@ -1001,7 +1001,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
addr += kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd,
addr, FPU_LS_SINGLE);
break;
}
@@ -1010,7 +1010,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd,
addr, FPU_LS_SINGLE);
if (emulated == EMULATE_DONE)
@@ -1022,7 +1022,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd,
addr, FPU_LS_DOUBLE);
break;
}
@@ -1031,7 +1031,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_load(vcpu, ax_rd,
addr, FPU_LS_DOUBLE);
if (emulated == EMULATE_DONE)
@@ -1043,7 +1043,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd,
addr, FPU_LS_SINGLE);
break;
}
@@ -1052,7 +1052,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd,
addr, FPU_LS_SINGLE);
if (emulated == EMULATE_DONE)
@@ -1064,7 +1064,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd,
addr, FPU_LS_DOUBLE);
break;
}
@@ -1073,7 +1073,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd,
addr, FPU_LS_DOUBLE);
if (emulated == EMULATE_DONE)
@@ -1085,7 +1085,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
kvmppc_get_gpr(vcpu, ax_rb);
- emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
+ emulated = kvmppc_emulate_fpr_store(vcpu, ax_rd,
addr,
FPU_LS_SINGLE_LOW);
break;
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index a0f6813f4560..ef54f917bdaf 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -700,7 +700,7 @@ static bool kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT);
}
-int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_handle_pagefault(struct kvm_vcpu *vcpu,
ulong eaddr, int vec)
{
bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
@@ -795,7 +795,7 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
/* The guest's PTE is not mapped yet. Map on the host */
if (kvmppc_mmu_map_page(vcpu, &pte, iswrite) == -EIO) {
/* Exit KVM if mapping failed */
- run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
return RESUME_HOST;
}
if (data)
@@ -808,7 +808,7 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->stat.mmio_exits++;
vcpu->arch.paddr_accessed = pte.raddr;
vcpu->arch.vaddr_accessed = pte.eaddr;
- r = kvmppc_emulate_mmio(run, vcpu);
+ r = kvmppc_emulate_mmio(vcpu);
if ( r == RESUME_HOST_NV )
r = RESUME_HOST;
}
@@ -992,7 +992,7 @@ static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac)
enum emulation_result er = EMULATE_FAIL;
if (!(kvmppc_get_msr(vcpu) & MSR_PR))
- er = kvmppc_emulate_instruction(vcpu->run, vcpu);
+ er = kvmppc_emulate_instruction(vcpu);
if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) {
/* Couldn't emulate, trigger interrupt in guest */
@@ -1089,8 +1089,7 @@ static void kvmppc_clear_debug(struct kvm_vcpu *vcpu)
}
}
-static int kvmppc_exit_pr_progint(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
+static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
{
enum emulation_result er;
ulong flags;
@@ -1124,7 +1123,7 @@ static int kvmppc_exit_pr_progint(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
vcpu->stat.emulated_inst_exits++;
- er = kvmppc_emulate_instruction(run, vcpu);
+ er = kvmppc_emulate_instruction(vcpu);
switch (er) {
case EMULATE_DONE:
r = RESUME_GUEST_NV;
@@ -1139,7 +1138,7 @@ static int kvmppc_exit_pr_progint(struct kvm_run *run, struct kvm_vcpu *vcpu,
r = RESUME_GUEST;
break;
case EMULATE_DO_MMIO:
- run->exit_reason = KVM_EXIT_MMIO;
+ vcpu->run->exit_reason = KVM_EXIT_MMIO;
r = RESUME_HOST_NV;
break;
case EMULATE_EXIT_USER:
@@ -1198,7 +1197,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
/* only care about PTEG not found errors, but leave NX alone */
if (shadow_srr1 & 0x40000000) {
int idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr);
+ r = kvmppc_handle_pagefault(vcpu, kvmppc_get_pc(vcpu), exit_nr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
vcpu->stat.sp_instruc++;
} else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
@@ -1248,7 +1247,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
*/
if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) {
int idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr);
+ r = kvmppc_handle_pagefault(vcpu, dar, exit_nr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
} else {
kvmppc_core_queue_data_storage(vcpu, dar, fault_dsisr);
@@ -1292,7 +1291,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case BOOK3S_INTERRUPT_PROGRAM:
case BOOK3S_INTERRUPT_H_EMUL_ASSIST:
- r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
+ r = kvmppc_exit_pr_progint(vcpu, exit_nr);
break;
case BOOK3S_INTERRUPT_SYSCALL:
{
@@ -1370,7 +1369,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
emul = kvmppc_get_last_inst(vcpu, INST_GENERIC,
&last_inst);
if (emul == EMULATE_DONE)
- r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
+ r = kvmppc_exit_pr_progint(vcpu, exit_nr);
else
r = RESUME_GUEST;
@@ -1825,8 +1824,9 @@ static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
vfree(vcpu_book3s);
}
-static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+static int kvmppc_vcpu_run_pr(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
int ret;
#ifdef CONFIG_ALTIVEC
unsigned long uninitialized_var(vrsave);
@@ -1834,7 +1834,7 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
/* Check if we can run the vcpu at all */
if (!vcpu->arch.sane) {
- kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = -EINVAL;
goto out;
}
@@ -1861,7 +1861,7 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
kvmppc_fix_ee_before_entry();
- ret = __kvmppc_vcpu_run(kvm_run, vcpu);
+ ret = __kvmppc_vcpu_run(run, vcpu);
kvmppc_clear_debug(vcpu);
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 888afe8d35cc..c0d62a917e20 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -729,13 +729,14 @@ int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
return r;
}
-int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
int ret, s;
struct debug_reg debug;
if (!vcpu->arch.sane) {
- kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
return -EINVAL;
}
@@ -777,7 +778,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
vcpu->arch.pgdir = vcpu->kvm->mm->pgd;
kvmppc_fix_ee_before_entry();
- ret = __kvmppc_vcpu_run(kvm_run, vcpu);
+ ret = __kvmppc_vcpu_run(run, vcpu);
/* No need for guest_exit. It's done in handle_exit.
We also get here with interrupts enabled. */
@@ -799,11 +800,11 @@ out:
return ret;
}
-static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
+static int emulation_exit(struct kvm_vcpu *vcpu)
{
enum emulation_result er;
- er = kvmppc_emulate_instruction(run, vcpu);
+ er = kvmppc_emulate_instruction(vcpu);
switch (er) {
case EMULATE_DONE:
/* don't overwrite subtypes, just account kvm_stats */
@@ -820,8 +821,8 @@ static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
__func__, vcpu->arch.regs.nip, vcpu->arch.last_inst);
/* For debugging, encode the failing instruction and
* report it to userspace. */
- run->hw.hardware_exit_reason = ~0ULL << 32;
- run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
+ vcpu->run->hw.hardware_exit_reason = ~0ULL << 32;
+ vcpu->run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
kvmppc_core_queue_program(vcpu, ESR_PIL);
return RESUME_HOST;
@@ -833,8 +834,9 @@ static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
}
-static int kvmppc_handle_debug(struct kvm_run *run, struct kvm_vcpu *vcpu)
+static int kvmppc_handle_debug(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
struct debug_reg *dbg_reg = &(vcpu->arch.dbg_reg);
u32 dbsr = vcpu->arch.dbsr;
@@ -953,7 +955,7 @@ static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
}
}
-static int kvmppc_resume_inst_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_resume_inst_load(struct kvm_vcpu *vcpu,
enum emulation_result emulated, u32 last_inst)
{
switch (emulated) {
@@ -965,8 +967,8 @@ static int kvmppc_resume_inst_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
__func__, vcpu->arch.regs.nip);
/* For debugging, encode the failing instruction and
* report it to userspace. */
- run->hw.hardware_exit_reason = ~0ULL << 32;
- run->hw.hardware_exit_reason |= last_inst;
+ vcpu->run->hw.hardware_exit_reason = ~0ULL << 32;
+ vcpu->run->hw.hardware_exit_reason |= last_inst;
kvmppc_core_queue_program(vcpu, ESR_PIL);
return RESUME_HOST;
@@ -1023,7 +1025,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
run->ready_for_interrupt_injection = 1;
if (emulated != EMULATE_DONE) {
- r = kvmppc_resume_inst_load(run, vcpu, emulated, last_inst);
+ r = kvmppc_resume_inst_load(vcpu, emulated, last_inst);
goto out;
}
@@ -1083,7 +1085,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case BOOKE_INTERRUPT_HV_PRIV:
- r = emulation_exit(run, vcpu);
+ r = emulation_exit(vcpu);
break;
case BOOKE_INTERRUPT_PROGRAM:
@@ -1093,7 +1095,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
* We are here because of an SW breakpoint instr,
* so lets return to host to handle.
*/
- r = kvmppc_handle_debug(run, vcpu);
+ r = kvmppc_handle_debug(vcpu);
run->exit_reason = KVM_EXIT_DEBUG;
kvmppc_account_exit(vcpu, DEBUG_EXITS);
break;
@@ -1114,7 +1116,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
}
- r = emulation_exit(run, vcpu);
+ r = emulation_exit(vcpu);
break;
case BOOKE_INTERRUPT_FP_UNAVAIL:
@@ -1281,7 +1283,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
* actually RAM. */
vcpu->arch.paddr_accessed = gpaddr;
vcpu->arch.vaddr_accessed = eaddr;
- r = kvmppc_emulate_mmio(run, vcpu);
+ r = kvmppc_emulate_mmio(vcpu);
kvmppc_account_exit(vcpu, MMIO_EXITS);
}
@@ -1332,7 +1334,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
case BOOKE_INTERRUPT_DEBUG: {
- r = kvmppc_handle_debug(run, vcpu);
+ r = kvmppc_handle_debug(vcpu);
if (r == RESUME_HOST)
run->exit_reason = KVM_EXIT_DEBUG;
kvmppc_account_exit(vcpu, DEBUG_EXITS);
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index 65b4d337d337..be9da96d9f06 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -70,7 +70,7 @@ void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr);
void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits);
void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits);
-int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_booke_emulate_op(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance);
int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
@@ -94,16 +94,12 @@ enum int_class {
void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type);
-extern int kvmppc_core_emulate_op_e500(struct kvm_run *run,
- struct kvm_vcpu *vcpu,
+extern int kvmppc_core_emulate_op_e500(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance);
extern int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn,
ulong spr_val);
extern int kvmppc_core_emulate_mfspr_e500(struct kvm_vcpu *vcpu, int sprn,
ulong *spr_val);
-extern int kvmppc_core_emulate_op_e500(struct kvm_run *run,
- struct kvm_vcpu *vcpu,
- unsigned int inst, int *advance);
extern int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn,
ulong spr_val);
extern int kvmppc_core_emulate_mfspr_e500(struct kvm_vcpu *vcpu, int sprn,
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 689ff5f90e9e..d8d38aca71bd 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -39,7 +39,7 @@ static void kvmppc_emul_rfci(struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.csrr1);
}
-int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_booke_emulate_op(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 3d0d3ec5be96..64eb833e9f02 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -83,16 +83,16 @@ static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
}
#endif
-static int kvmppc_e500_emul_ehpriv(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_e500_emul_ehpriv(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
switch (get_oc(inst)) {
case EHPRIV_OC_DEBUG:
- run->exit_reason = KVM_EXIT_DEBUG;
- run->debug.arch.address = vcpu->arch.regs.nip;
- run->debug.arch.status = 0;
+ vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+ vcpu->run->debug.arch.address = vcpu->arch.regs.nip;
+ vcpu->run->debug.arch.status = 0;
kvmppc_account_exit(vcpu, DEBUG_EXITS);
emulated = EMULATE_EXIT_USER;
*advance = 0;
@@ -125,7 +125,7 @@ static int kvmppc_e500_emul_mftmr(struct kvm_vcpu *vcpu, unsigned int inst,
return EMULATE_FAIL;
}
-int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_core_emulate_op_e500(struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
int emulated = EMULATE_DONE;
@@ -182,8 +182,7 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu,
break;
case XOP_EHPRIV:
- emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst,
- advance);
+ emulated = kvmppc_e500_emul_ehpriv(vcpu, inst, advance);
break;
default:
@@ -197,7 +196,7 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
if (emulated == EMULATE_FAIL)
- emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
+ emulated = kvmppc_booke_emulate_op(vcpu, inst, advance);
return emulated;
}
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 6fca38ca791f..ee1147c98cd8 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -191,7 +191,7 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
/* XXX Should probably auto-generate instruction decoding for a particular core
* from opcode tables in the future. */
-int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
+int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu)
{
u32 inst;
int rs, rt, sprn;
@@ -270,9 +270,9 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
* these are illegal instructions.
*/
if (inst == KVMPPC_INST_SW_BREAKPOINT) {
- run->exit_reason = KVM_EXIT_DEBUG;
- run->debug.arch.status = 0;
- run->debug.arch.address = kvmppc_get_pc(vcpu);
+ vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+ vcpu->run->debug.arch.status = 0;
+ vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
emulated = EMULATE_EXIT_USER;
advance = 0;
} else
@@ -285,7 +285,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
}
if (emulated == EMULATE_FAIL) {
- emulated = vcpu->kvm->arch.kvm_ops->emulate_op(run, vcpu, inst,
+ emulated = vcpu->kvm->arch.kvm_ops->emulate_op(vcpu, inst,
&advance);
if (emulated == EMULATE_AGAIN) {
advance = 0;
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c
index 135d0e686622..48272a9b9c30 100644
--- a/arch/powerpc/kvm/emulate_loadstore.c
+++ b/arch/powerpc/kvm/emulate_loadstore.c
@@ -71,7 +71,6 @@ static bool kvmppc_check_altivec_disabled(struct kvm_vcpu *vcpu)
*/
int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
{
- struct kvm_run *run = vcpu->run;
u32 inst;
enum emulation_result emulated = EMULATE_FAIL;
int advance = 1;
@@ -104,10 +103,10 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
int instr_byte_swap = op.type & BYTEREV;
if (op.type & SIGNEXT)
- emulated = kvmppc_handle_loads(run, vcpu,
+ emulated = kvmppc_handle_loads(vcpu,
op.reg, size, !instr_byte_swap);
else
- emulated = kvmppc_handle_load(run, vcpu,
+ emulated = kvmppc_handle_load(vcpu,
op.reg, size, !instr_byte_swap);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
@@ -124,10 +123,10 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
vcpu->arch.mmio_sp64_extend = 1;
if (op.type & SIGNEXT)
- emulated = kvmppc_handle_loads(run, vcpu,
+ emulated = kvmppc_handle_loads(vcpu,
KVM_MMIO_REG_FPR|op.reg, size, 1);
else
- emulated = kvmppc_handle_load(run, vcpu,
+ emulated = kvmppc_handle_load(vcpu,
KVM_MMIO_REG_FPR|op.reg, size, 1);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
@@ -164,12 +163,12 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (size == 16) {
vcpu->arch.mmio_vmx_copy_nums = 2;
- emulated = kvmppc_handle_vmx_load(run,
- vcpu, KVM_MMIO_REG_VMX|op.reg,
+ emulated = kvmppc_handle_vmx_load(vcpu,
+ KVM_MMIO_REG_VMX|op.reg,
8, 1);
} else {
vcpu->arch.mmio_vmx_copy_nums = 1;
- emulated = kvmppc_handle_vmx_load(run, vcpu,
+ emulated = kvmppc_handle_vmx_load(vcpu,
KVM_MMIO_REG_VMX|op.reg,
size, 1);
}
@@ -217,7 +216,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
io_size_each = op.element_size;
}
- emulated = kvmppc_handle_vsx_load(run, vcpu,
+ emulated = kvmppc_handle_vsx_load(vcpu,
KVM_MMIO_REG_VSX|op.reg, io_size_each,
1, op.type & SIGNEXT);
break;
@@ -227,8 +226,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
/* if need byte reverse, op.val has been reversed by
* analyse_instr().
*/
- emulated = kvmppc_handle_store(run, vcpu, op.val,
- size, 1);
+ emulated = kvmppc_handle_store(vcpu, op.val, size, 1);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
kvmppc_set_gpr(vcpu, op.update_reg, op.ea);
@@ -250,7 +248,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (op.type & FPCONV)
vcpu->arch.mmio_sp64_extend = 1;
- emulated = kvmppc_handle_store(run, vcpu,
+ emulated = kvmppc_handle_store(vcpu,
VCPU_FPR(vcpu, op.reg), size, 1);
if ((op.type & UPDATE) && (emulated != EMULATE_FAIL))
@@ -290,12 +288,12 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
if (size == 16) {
vcpu->arch.mmio_vmx_copy_nums = 2;
- emulated = kvmppc_handle_vmx_store(run,
- vcpu, op.reg, 8, 1);
+ emulated = kvmppc_handle_vmx_store(vcpu,
+ op.reg, 8, 1);
} else {
vcpu->arch.mmio_vmx_copy_nums = 1;
- emulated = kvmppc_handle_vmx_store(run,
- vcpu, op.reg, size, 1);
+ emulated = kvmppc_handle_vmx_store(vcpu,
+ op.reg, size, 1);
}
break;
@@ -338,7 +336,7 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
io_size_each = op.element_size;
}
- emulated = kvmppc_handle_vsx_store(run, vcpu,
+ emulated = kvmppc_handle_vsx_store(vcpu,
op.reg, io_size_each, 1);
break;
}
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 27ccff612903..dd7d141e33e8 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -279,7 +279,7 @@ out:
}
EXPORT_SYMBOL_GPL(kvmppc_sanity_check);
-int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
+int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu)
{
enum emulation_result er;
int r;
@@ -295,7 +295,7 @@ int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
r = RESUME_GUEST;
break;
case EMULATE_DO_MMIO:
- run->exit_reason = KVM_EXIT_MMIO;
+ vcpu->run->exit_reason = KVM_EXIT_MMIO;
/* We must reload nonvolatiles because "update" load/store
* instructions modify register state. */
/* Future optimization: only reload non-volatiles if they were
@@ -1107,9 +1107,9 @@ static inline u32 dp_to_sp(u64 fprd)
#define dp_to_sp(x) (x)
#endif /* CONFIG_PPC_FPU */
-static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
- struct kvm_run *run)
+static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
u64 uninitialized_var(gpr);
if (run->mmio.len > sizeof(gpr)) {
@@ -1219,10 +1219,11 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
}
}
-static int __kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int __kvmppc_handle_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian, int sign_extend)
{
+ struct kvm_run *run = vcpu->run;
int idx, ret;
bool host_swabbed;
@@ -1256,7 +1257,7 @@ static int __kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
srcu_read_unlock(&vcpu->kvm->srcu, idx);
if (!ret) {
- kvmppc_complete_mmio_load(vcpu, run);
+ kvmppc_complete_mmio_load(vcpu);
vcpu->mmio_needed = 0;
return EMULATE_DONE;
}
@@ -1264,24 +1265,24 @@ static int __kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
return EMULATE_DO_MMIO;
}
-int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian)
{
- return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 0);
+ return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 0);
}
EXPORT_SYMBOL_GPL(kvmppc_handle_load);
/* Same as above, but sign extends */
-int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian)
{
- return __kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian, 1);
+ return __kvmppc_handle_load(vcpu, rt, bytes, is_default_endian, 1);
}
#ifdef CONFIG_VSX
-int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes,
int is_default_endian, int mmio_sign_extend)
{
@@ -1292,13 +1293,13 @@ int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
return EMULATE_FAIL;
while (vcpu->arch.mmio_vsx_copy_nums) {
- emulated = __kvmppc_handle_load(run, vcpu, rt, bytes,
+ emulated = __kvmppc_handle_load(vcpu, rt, bytes,
is_default_endian, mmio_sign_extend);
if (emulated != EMULATE_DONE)
break;
- vcpu->arch.paddr_accessed += run->mmio.len;
+ vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
vcpu->arch.mmio_vsx_copy_nums--;
vcpu->arch.mmio_vsx_offset++;
@@ -1307,9 +1308,10 @@ int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
#endif /* CONFIG_VSX */
-int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_store(struct kvm_vcpu *vcpu,
u64 val, unsigned int bytes, int is_default_endian)
{
+ struct kvm_run *run = vcpu->run;
void *data = run->mmio.data;
int idx, ret;
bool host_swabbed;
@@ -1423,7 +1425,7 @@ static inline int kvmppc_get_vsr_data(struct kvm_vcpu *vcpu, int rs, u64 *val)
return result;
}
-int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
int rs, unsigned int bytes, int is_default_endian)
{
u64 val;
@@ -1439,13 +1441,13 @@ int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (kvmppc_get_vsr_data(vcpu, rs, &val) == -1)
return EMULATE_FAIL;
- emulated = kvmppc_handle_store(run, vcpu,
+ emulated = kvmppc_handle_store(vcpu,
val, bytes, is_default_endian);
if (emulated != EMULATE_DONE)
break;
- vcpu->arch.paddr_accessed += run->mmio.len;
+ vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
vcpu->arch.mmio_vsx_copy_nums--;
vcpu->arch.mmio_vsx_offset++;
@@ -1454,19 +1456,19 @@ int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
return emulated;
}
-static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu,
- struct kvm_run *run)
+static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
enum emulation_result emulated = EMULATE_FAIL;
int r;
vcpu->arch.paddr_accessed += run->mmio.len;
if (!vcpu->mmio_is_write) {
- emulated = kvmppc_handle_vsx_load(run, vcpu, vcpu->arch.io_gpr,
+ emulated = kvmppc_handle_vsx_load(vcpu, vcpu->arch.io_gpr,
run->mmio.len, 1, vcpu->arch.mmio_sign_extend);
} else {
- emulated = kvmppc_handle_vsx_store(run, vcpu,
+ emulated = kvmppc_handle_vsx_store(vcpu,
vcpu->arch.io_gpr, run->mmio.len, 1);
}
@@ -1490,7 +1492,7 @@ static int kvmppc_emulate_mmio_vsx_loadstore(struct kvm_vcpu *vcpu,
#endif /* CONFIG_VSX */
#ifdef CONFIG_ALTIVEC
-int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes, int is_default_endian)
{
enum emulation_result emulated = EMULATE_DONE;
@@ -1499,13 +1501,13 @@ int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
return EMULATE_FAIL;
while (vcpu->arch.mmio_vmx_copy_nums) {
- emulated = __kvmppc_handle_load(run, vcpu, rt, bytes,
+ emulated = __kvmppc_handle_load(vcpu, rt, bytes,
is_default_endian, 0);
if (emulated != EMULATE_DONE)
break;
- vcpu->arch.paddr_accessed += run->mmio.len;
+ vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
vcpu->arch.mmio_vmx_copy_nums--;
vcpu->arch.mmio_vmx_offset++;
}
@@ -1585,7 +1587,7 @@ int kvmppc_get_vmx_byte(struct kvm_vcpu *vcpu, int index, u64 *val)
return result;
}
-int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
+int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
unsigned int rs, unsigned int bytes, int is_default_endian)
{
u64 val = 0;
@@ -1620,12 +1622,12 @@ int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
return EMULATE_FAIL;
}
- emulated = kvmppc_handle_store(run, vcpu, val, bytes,
+ emulated = kvmppc_handle_store(vcpu, val, bytes,
is_default_endian);
if (emulated != EMULATE_DONE)
break;
- vcpu->arch.paddr_accessed += run->mmio.len;
+ vcpu->arch.paddr_accessed += vcpu->run->mmio.len;
vcpu->arch.mmio_vmx_copy_nums--;
vcpu->arch.mmio_vmx_offset++;
}
@@ -1633,19 +1635,19 @@ int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
return emulated;
}
-static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu,
- struct kvm_run *run)
+static int kvmppc_emulate_mmio_vmx_loadstore(struct kvm_vcpu *vcpu)
{
+ struct kvm_run *run = vcpu->run;
enum emulation_result emulated = EMULATE_FAIL;
int r;
vcpu->arch.paddr_accessed += run->mmio.len;
if (!vcpu->mmio_is_write) {
- emulated = kvmppc_handle_vmx_load(run, vcpu,
+ emulated = kvmppc_handle_vmx_load(vcpu,
vcpu->arch.io_gpr, run->mmio.len, 1);
} else {
- emulated = kvmppc_handle_vmx_store(run, vcpu,
+ emulated = kvmppc_handle_vmx_store(vcpu,
vcpu->arch.io_gpr, run->mmio.len, 1);
}
@@ -1775,7 +1777,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
if (vcpu->mmio_needed) {
vcpu->mmio_needed = 0;
if (!vcpu->mmio_is_write)
- kvmppc_complete_mmio_load(vcpu, run);
+ kvmppc_complete_mmio_load(vcpu);
#ifdef CONFIG_VSX
if (vcpu->arch.mmio_vsx_copy_nums > 0) {
vcpu->arch.mmio_vsx_copy_nums--;
@@ -1783,7 +1785,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
}
if (vcpu->arch.mmio_vsx_copy_nums > 0) {
- r = kvmppc_emulate_mmio_vsx_loadstore(vcpu, run);
+ r = kvmppc_emulate_mmio_vsx_loadstore(vcpu);
if (r == RESUME_HOST) {
vcpu->mmio_needed = 1;
goto out;
@@ -1797,7 +1799,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
}
if (vcpu->arch.mmio_vmx_copy_nums > 0) {
- r = kvmppc_emulate_mmio_vmx_loadstore(vcpu, run);
+ r = kvmppc_emulate_mmio_vmx_loadstore(vcpu);
if (r == RESUME_HOST) {
vcpu->mmio_needed = 1;
goto out;
@@ -1830,7 +1832,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
if (run->immediate_exit)
r = -EINTR;
else
- r = kvmppc_vcpu_run(run, vcpu);
+ r = kvmppc_vcpu_run(vcpu);
kvm_sigset_deactivate(vcpu);
diff --git a/arch/powerpc/kvm/trace_hv.h b/arch/powerpc/kvm/trace_hv.h
index 8a1e3b0047f1..4a61a971c34e 100644
--- a/arch/powerpc/kvm/trace_hv.h
+++ b/arch/powerpc/kvm/trace_hv.h
@@ -472,9 +472,9 @@ TRACE_EVENT(kvmppc_run_vcpu_enter,
);
TRACE_EVENT(kvmppc_run_vcpu_exit,
- TP_PROTO(struct kvm_vcpu *vcpu, struct kvm_run *run),
+ TP_PROTO(struct kvm_vcpu *vcpu),
- TP_ARGS(vcpu, run),
+ TP_ARGS(vcpu),
TP_STRUCT__entry(
__field(int, vcpu_id)
@@ -484,7 +484,7 @@ TRACE_EVENT(kvmppc_run_vcpu_exit,
TP_fast_assign(
__entry->vcpu_id = vcpu->vcpu_id;
- __entry->exit = run->exit_reason;
+ __entry->exit = vcpu->run->exit_reason;
__entry->ret = vcpu->arch.ret;
),
diff --git a/arch/powerpc/platforms/powernv/vas-fault.c b/arch/powerpc/platforms/powernv/vas-fault.c
index 25db70be4c9c..266a6ca5e15e 100644
--- a/arch/powerpc/platforms/powernv/vas-fault.c
+++ b/arch/powerpc/platforms/powernv/vas-fault.c
@@ -127,7 +127,7 @@ static void update_csb(struct vas_window *window,
return;
}
- use_mm(window->mm);
+ kthread_use_mm(window->mm);
rc = copy_to_user(csb_addr, &csb, sizeof(csb));
/*
* User space polls on csb.flags (first byte). So add barrier
@@ -139,7 +139,7 @@ static void update_csb(struct vas_window *window,
smp_mb();
rc = copy_to_user(csb_addr, &csb, sizeof(u8));
}
- unuse_mm(window->mm);
+ kthread_unuse_mm(window->mm);
put_task_struct(tsk);
/* Success */
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c733007b90ab..128192e14ff2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -12,64 +12,70 @@ config 32BIT
config RISCV
def_bool y
- select OF
- select OF_EARLY_FLATTREE
- select OF_IRQ
+ select ARCH_CLOCKSOURCE_INIT
select ARCH_HAS_BINFMT_FLAT
+ select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEBUG_WX
+ select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_HAS_MMIOWB
+ select ARCH_HAS_PTE_SPECIAL
+ select ARCH_HAS_SET_DIRECT_MAP
+ select ARCH_HAS_SET_MEMORY
+ select ARCH_HAS_STRICT_KERNEL_RWX if MMU
+ select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_FRAME_POINTERS
+ select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
select CLONE_BACKWARDS
select COMMON_CLK
+ select EDAC_SUPPORT
+ select GENERIC_ARCH_TOPOLOGY if SMP
+ select GENERIC_ATOMIC64 if !64BIT
select GENERIC_CLOCKEVENTS
+ select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
+ select GENERIC_IOREMAP
+ select GENERIC_IRQ_MULTI_HANDLER
select GENERIC_IRQ_SHOW
select GENERIC_PCI_IOMAP
+ select GENERIC_PTDUMP if MMU
select GENERIC_SCHED_CLOCK
+ select GENERIC_SMP_IDLE_THREAD
select GENERIC_STRNCPY_FROM_USER if MMU
select GENERIC_STRNLEN_USER if MMU
- select GENERIC_SMP_IDLE_THREAD
- select GENERIC_ATOMIC64 if !64BIT
- select GENERIC_IOREMAP
- select GENERIC_PTDUMP if MMU
+ select GENERIC_TIME_VSYSCALL if MMU && 64BIT
+ select HANDLE_DOMAIN_IRQ
select HAVE_ARCH_AUDITSYSCALL
+ select HAVE_ARCH_KASAN if MMU && 64BIT
+ select HAVE_ARCH_KGDB
+ select HAVE_ARCH_KGDB_QXFER_PKT
+ select HAVE_ARCH_MMAP_RND_BITS if MMU
select HAVE_ARCH_SECCOMP_FILTER
+ select HAVE_ARCH_TRACEHOOK
select HAVE_ASM_MODVERSIONS
+ select HAVE_COPY_THREAD_TLS
select HAVE_DMA_CONTIGUOUS if MMU
+ select HAVE_EBPF_JIT if MMU
select HAVE_FUTEX_CMPXCHG if FUTEX
+ select HAVE_GENERIC_VDSO if MMU && 64BIT
+ select HAVE_PCI
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
- select SPARSE_IRQ
- select SYSCTL_EXCEPTION_TRACE
- select HAVE_ARCH_TRACEHOOK
- select HAVE_PCI
select MODULES_USE_ELF_RELA if MODULES
select MODULE_SECTIONS if MODULES
- select THREAD_INFO_IN_TASK
+ select OF
+ select OF_EARLY_FLATTREE
+ select OF_IRQ
select PCI_DOMAINS_GENERIC if PCI
select PCI_MSI if PCI
+ select RISCV_INTC
select RISCV_TIMER
- select GENERIC_IRQ_MULTI_HANDLER
- select GENERIC_ARCH_TOPOLOGY if SMP
- select ARCH_HAS_PTE_SPECIAL
- select ARCH_HAS_MMIOWB
- select ARCH_HAS_DEBUG_VIRTUAL if MMU
- select HAVE_EBPF_JIT if MMU
- select EDAC_SUPPORT
- select ARCH_HAS_GIGANTIC_PAGE
- select ARCH_HAS_SET_DIRECT_MAP
- select ARCH_HAS_SET_MEMORY
- select ARCH_HAS_STRICT_KERNEL_RWX if MMU
- select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
select SPARSEMEM_STATIC if 32BIT
- select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
- select HAVE_ARCH_MMAP_RND_BITS if MMU
- select ARCH_HAS_GCOV_PROFILE_ALL
- select HAVE_COPY_THREAD_TLS
- select HAVE_ARCH_KASAN if MMU && 64BIT
- select HAVE_ARCH_KGDB
- select HAVE_ARCH_KGDB_QXFER_PKT
+ select SPARSE_IRQ
+ select SYSCTL_EXCEPTION_TRACE
+ select THREAD_INFO_IN_TASK
config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
@@ -196,11 +202,11 @@ config ARCH_RV64I
bool "RV64I"
select 64BIT
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000
- select HAVE_FUNCTION_TRACER
- select HAVE_FUNCTION_GRAPH_TRACER
- select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE if MMU
select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
+ select HAVE_FTRACE_MCOUNT_RECORD
+ select HAVE_FUNCTION_GRAPH_TRACER
+ select HAVE_FUNCTION_TRACER
select SWIOTLB if MMU
endchoice
diff --git a/arch/riscv/include/asm/clocksource.h b/arch/riscv/include/asm/clocksource.h
new file mode 100644
index 000000000000..482185566b0c
--- /dev/null
+++ b/arch/riscv/include/asm/clocksource.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_CLOCKSOURCE_H
+#define _ASM_CLOCKSOURCE_H
+
+#include <asm/vdso/clocksource.h>
+
+#endif
diff --git a/arch/riscv/include/asm/irq.h b/arch/riscv/include/asm/irq.h
index 6e1b0e0325eb..9807ad164015 100644
--- a/arch/riscv/include/asm/irq.h
+++ b/arch/riscv/include/asm/irq.h
@@ -10,11 +10,6 @@
#include <linux/interrupt.h>
#include <linux/linkage.h>
-#define NR_IRQS 0
-
-void riscv_timer_interrupt(void);
-void riscv_software_interrupt(void);
-
#include <asm-generic/irq.h>
#endif /* _ASM_RISCV_IRQ_H */
diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h
index 3ddb798264f1..bdddcd5c1b71 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -8,6 +8,8 @@
#include <linux/const.h>
+#include <vdso/processor.h>
+
#include <asm/ptrace.h>
/*
@@ -58,16 +60,6 @@ static inline void release_thread(struct task_struct *dead_task)
extern unsigned long get_wchan(struct task_struct *p);
-static inline void cpu_relax(void)
-{
-#ifdef __riscv_muldiv
- int dummy;
- /* In lieu of a halt instruction, induce a long-latency stall. */
- __asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));
-#endif
- barrier();
-}
-
static inline void wait_for_interrupt(void)
{
__asm__ __volatile__ ("wfi");
@@ -75,6 +67,7 @@ static inline void wait_for_interrupt(void)
struct device_node;
int riscv_of_processor_hartid(struct device_node *node);
+int riscv_of_parent_hartid(struct device_node *node);
extern void riscv_fill_hwcap(void);
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h
index f4c7cfda6b7f..40bb1c15a731 100644
--- a/arch/riscv/include/asm/smp.h
+++ b/arch/riscv/include/asm/smp.h
@@ -28,6 +28,9 @@ void show_ipi_stats(struct seq_file *p, int prec);
/* SMP initialization hook for setup_arch */
void __init setup_smp(void);
+/* Called from C code, this handles an IPI. */
+void handle_IPI(struct pt_regs *regs);
+
/* Hook for the generic smp_call_function_many() routine. */
void arch_send_call_function_ipi_mask(struct cpumask *mask);
diff --git a/arch/riscv/include/asm/vdso.h b/arch/riscv/include/asm/vdso.h
index 7a7fce63c474..8454f746bbfd 100644
--- a/arch/riscv/include/asm/vdso.h
+++ b/arch/riscv/include/asm/vdso.h
@@ -10,8 +10,10 @@
#include <linux/types.h>
+#ifndef GENERIC_TIME_VSYSCALL
struct vdso_data {
};
+#endif
/*
* The VDSO symbols are mapped into Linux so we can just use regular symbol
diff --git a/arch/riscv/include/asm/vdso/clocksource.h b/arch/riscv/include/asm/vdso/clocksource.h
new file mode 100644
index 000000000000..df6ea65c1dec
--- /dev/null
+++ b/arch/riscv/include/asm/vdso/clocksource.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_VDSOCLOCKSOURCE_H
+#define __ASM_VDSOCLOCKSOURCE_H
+
+#define VDSO_ARCH_CLOCKMODES \
+ VDSO_CLOCKMODE_ARCHTIMER
+
+#endif
diff --git a/arch/riscv/include/asm/vdso/gettimeofday.h b/arch/riscv/include/asm/vdso/gettimeofday.h
new file mode 100644
index 000000000000..c8e818688ec1
--- /dev/null
+++ b/arch/riscv/include/asm/vdso/gettimeofday.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_VDSO_GETTIMEOFDAY_H
+#define __ASM_VDSO_GETTIMEOFDAY_H
+
+#ifndef __ASSEMBLY__
+
+#include <asm/unistd.h>
+#include <asm/csr.h>
+#include <uapi/linux/time.h>
+
+#define VDSO_HAS_CLOCK_GETRES 1
+
+static __always_inline
+int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
+ struct timezone *_tz)
+{
+ register struct __kernel_old_timeval *tv asm("a0") = _tv;
+ register struct timezone *tz asm("a1") = _tz;
+ register long ret asm("a0");
+ register long nr asm("a7") = __NR_gettimeofday;
+
+ asm volatile ("ecall\n"
+ : "=r" (ret)
+ : "r"(tv), "r"(tz), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+static __always_inline
+long clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
+{
+ register clockid_t clkid asm("a0") = _clkid;
+ register struct __kernel_timespec *ts asm("a1") = _ts;
+ register long ret asm("a0");
+ register long nr asm("a7") = __NR_clock_gettime;
+
+ asm volatile ("ecall\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+static __always_inline
+int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
+{
+ register clockid_t clkid asm("a0") = _clkid;
+ register struct __kernel_timespec *ts asm("a1") = _ts;
+ register long ret asm("a0");
+ register long nr asm("a7") = __NR_clock_getres;
+
+ asm volatile ("ecall\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+static __always_inline u64 __arch_get_hw_counter(s32 clock_mode)
+{
+ /*
+ * The purpose of csr_read(CSR_TIME) is to trap the system into
+ * M-mode to obtain the value of CSR_TIME. Hence, unlike other
+ * architecture, no fence instructions surround the csr_read()
+ */
+ return csr_read(CSR_TIME);
+}
+
+static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
+{
+ return _vdso_data;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_GETTIMEOFDAY_H */
diff --git a/arch/riscv/include/asm/vdso/processor.h b/arch/riscv/include/asm/vdso/processor.h
new file mode 100644
index 000000000000..82a5693b1861
--- /dev/null
+++ b/arch/riscv/include/asm/vdso/processor.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_VDSO_PROCESSOR_H
+#define __ASM_VDSO_PROCESSOR_H
+
+#ifndef __ASSEMBLY__
+
+static inline void cpu_relax(void)
+{
+#ifdef __riscv_muldiv
+ int dummy;
+ /* In lieu of a halt instruction, induce a long-latency stall. */
+ __asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));
+#endif
+ barrier();
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_PROCESSOR_H */
diff --git a/arch/riscv/include/asm/vdso/vsyscall.h b/arch/riscv/include/asm/vdso/vsyscall.h
new file mode 100644
index 000000000000..82fd5d83bd60
--- /dev/null
+++ b/arch/riscv/include/asm/vdso/vsyscall.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_VDSO_VSYSCALL_H
+#define __ASM_VDSO_VSYSCALL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/timekeeper_internal.h>
+#include <vdso/datapage.h>
+
+extern struct vdso_data *vdso_data;
+
+/*
+ * Update the vDSO data page to keep in sync with kernel timekeeping.
+ */
+static __always_inline struct vdso_data *__riscv_get_k_vdso_data(void)
+{
+ return vdso_data;
+}
+
+#define __arch_get_k_vdso_data __riscv_get_k_vdso_data
+
+/* The asm-generic header needs to be included after the definitions above */
+#include <asm-generic/vdso/vsyscall.h>
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_VSYSCALL_H */
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index 40a3c442ac5f..6d59e6906fdd 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -44,6 +44,22 @@ int riscv_of_processor_hartid(struct device_node *node)
return hart;
}
+/*
+ * Find hart ID of the CPU DT node under which given DT node falls.
+ *
+ * To achieve this, we walk up the DT tree until we find an active
+ * RISC-V core (HART) node and extract the cpuid from it.
+ */
+int riscv_of_parent_hartid(struct device_node *node)
+{
+ for (; node; node = node->parent) {
+ if (of_device_is_compatible(node, "riscv"))
+ return riscv_of_processor_hartid(node);
+ }
+
+ return -1;
+}
+
#ifdef CONFIG_PROC_FS
static void print_isa(struct seq_file *f, const char *isa)
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 56d071b2c0a1..cae7e6d4c7ef 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -106,7 +106,9 @@ _save_context:
/* Handle interrupts */
move a0, sp /* pt_regs */
- tail do_IRQ
+ la a1, handle_arch_irq
+ REG_L a1, (a1)
+ jr a1
1:
/*
* Exceptions run with interrupts enabled or disabled depending on the
diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c
index 345c4f2eba13..7207fa08d78f 100644
--- a/arch/riscv/kernel/irq.c
+++ b/arch/riscv/kernel/irq.c
@@ -7,7 +7,6 @@
#include <linux/interrupt.h>
#include <linux/irqchip.h>
-#include <linux/irqdomain.h>
#include <linux/seq_file.h>
#include <asm/smp.h>
@@ -17,37 +16,9 @@ int arch_show_interrupts(struct seq_file *p, int prec)
return 0;
}
-asmlinkage __visible void __irq_entry do_IRQ(struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- irq_enter();
- switch (regs->cause & ~CAUSE_IRQ_FLAG) {
- case RV_IRQ_TIMER:
- riscv_timer_interrupt();
- break;
-#ifdef CONFIG_SMP
- case RV_IRQ_SOFT:
- /*
- * We only use software interrupts to pass IPIs, so if a non-SMP
- * system gets one, then we don't know what to do.
- */
- riscv_software_interrupt();
- break;
-#endif
- case RV_IRQ_EXT:
- handle_arch_irq(regs);
- break;
- default:
- pr_alert("unexpected interrupt cause 0x%lx", regs->cause);
- BUG();
- }
- irq_exit();
-
- set_irq_regs(old_regs);
-}
-
void __init init_IRQ(void)
{
irqchip_init();
+ if (!handle_arch_irq)
+ panic("No interrupt controller found.");
}
diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c
index 5805791cd5b5..d4a64dfed342 100644
--- a/arch/riscv/kernel/patch.c
+++ b/arch/riscv/kernel/patch.c
@@ -11,6 +11,7 @@
#include <asm/kprobes.h>
#include <asm/cacheflush.h>
#include <asm/fixmap.h>
+#include <asm/patch.h>
struct patch_insn {
void *addr;
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index a65a8fa0c22d..b1d4f452f843 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -123,11 +123,14 @@ static inline void clear_ipi(void)
clint_clear_ipi(cpuid_to_hartid_map(smp_processor_id()));
}
-void riscv_software_interrupt(void)
+void handle_IPI(struct pt_regs *regs)
{
+ struct pt_regs *old_regs = set_irq_regs(regs);
unsigned long *pending_ipis = &ipi_data[smp_processor_id()].bits;
unsigned long *stats = ipi_data[smp_processor_id()].stats;
+ irq_enter();
+
clear_ipi();
while (true) {
@@ -138,7 +141,7 @@ void riscv_software_interrupt(void)
ops = xchg(pending_ipis, 0);
if (ops == 0)
- return;
+ goto done;
if (ops & (1 << IPI_RESCHEDULE)) {
stats[IPI_RESCHEDULE]++;
@@ -160,6 +163,10 @@ void riscv_software_interrupt(void)
/* Order data access and bit testing. */
mb();
}
+
+done:
+ irq_exit();
+ set_irq_regs(old_regs);
}
static const char * const ipi_names[] = {
diff --git a/arch/riscv/kernel/time.c b/arch/riscv/kernel/time.c
index 6a53c02e9c73..4d3a1048ad8b 100644
--- a/arch/riscv/kernel/time.c
+++ b/arch/riscv/kernel/time.c
@@ -26,3 +26,12 @@ void __init time_init(void)
lpj_fine = riscv_timebase / HZ;
timer_probe();
}
+
+void clocksource_arch_init(struct clocksource *cs)
+{
+#ifdef CONFIG_GENERIC_GETTIMEOFDAY
+ cs->vdso_clock_mode = VDSO_CLOCKMODE_ARCHTIMER;
+#else
+ cs->vdso_clock_mode = VDSO_CLOCKMODE_NONE;
+#endif
+}
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 5080fdf8c296..ecec1778e3a4 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -183,6 +183,4 @@ void trap_init(void)
csr_write(CSR_SCRATCH, 0);
/* Set the exception vector address */
csr_write(CSR_TVEC, &handle_exception);
- /* Enable interrupts */
- csr_write(CSR_IE, IE_SIE);
}
diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index e827fae3bf90..678204231700 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -11,8 +11,12 @@
#include <linux/slab.h>
#include <linux/binfmts.h>
#include <linux/err.h>
-
+#include <asm/page.h>
+#ifdef GENERIC_TIME_VSYSCALL
+#include <vdso/datapage.h>
+#else
#include <asm/vdso.h>
+#endif
extern char vdso_start[], vdso_end[];
@@ -26,7 +30,7 @@ static union {
struct vdso_data data;
u8 page[PAGE_SIZE];
} vdso_data_store __page_aligned_data;
-static struct vdso_data *vdso_data = &vdso_data_store.data;
+struct vdso_data *vdso_data = &vdso_data_store.data;
static int __init vdso_init(void)
{
@@ -75,13 +79,22 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
*/
mm->context.vdso = (void *)vdso_base;
- ret = install_special_mapping(mm, vdso_base, vdso_len,
+ ret =
+ install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT,
(VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC),
vdso_pagelist);
- if (unlikely(ret))
+ if (unlikely(ret)) {
mm->context.vdso = NULL;
+ goto end;
+ }
+ vdso_base += (vdso_pages << PAGE_SHIFT);
+ ret = install_special_mapping(mm, vdso_base, PAGE_SIZE,
+ (VM_READ | VM_MAYREAD), &vdso_pagelist[vdso_pages]);
+
+ if (unlikely(ret))
+ mm->context.vdso = NULL;
end:
mmap_write_unlock(mm);
return ret;
@@ -91,5 +104,8 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
if (vma->vm_mm && (vma->vm_start == (long)vma->vm_mm->context.vdso))
return "[vdso]";
+ if (vma->vm_mm && (vma->vm_start ==
+ (long)vma->vm_mm->context.vdso + PAGE_SIZE))
+ return "[vdso_data]";
return NULL;
}
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 4c8b2a4a6a70..38ba55b0eb9d 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -1,12 +1,14 @@
# SPDX-License-Identifier: GPL-2.0-only
# Copied from arch/tile/kernel/vdso/Makefile
+# Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before
+# the inclusion of generic Makefile.
+ARCH_REL_TYPE_ABS := R_RISCV_32|R_RISCV_64|R_RISCV_JUMP_SLOT
+include $(srctree)/lib/vdso/Makefile
# Symbols present in the vdso
vdso-syms = rt_sigreturn
ifdef CONFIG_64BIT
-vdso-syms += gettimeofday
-vdso-syms += clock_gettime
-vdso-syms += clock_getres
+vdso-syms += vgettimeofday
endif
vdso-syms += getcpu
vdso-syms += flush_icache
@@ -14,6 +16,10 @@ vdso-syms += flush_icache
# Files to link into the vdso
obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o
+ifneq ($(c-gettimeofday-y),)
+ CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
+endif
+
# Build rules
targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-dummy.o
obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
diff --git a/arch/riscv/kernel/vdso/clock_getres.S b/arch/riscv/kernel/vdso/clock_getres.S
deleted file mode 100644
index 91378a52eb22..000000000000
--- a/arch/riscv/kernel/vdso/clock_getres.S
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2017 SiFive
- */
-
-#include <linux/linkage.h>
-#include <asm/unistd.h>
-
- .text
-/* int __vdso_clock_getres(clockid_t clock_id, struct timespec *res); */
-ENTRY(__vdso_clock_getres)
- .cfi_startproc
- /* For now, just do the syscall. */
- li a7, __NR_clock_getres
- ecall
- ret
- .cfi_endproc
-ENDPROC(__vdso_clock_getres)
diff --git a/arch/riscv/kernel/vdso/clock_gettime.S b/arch/riscv/kernel/vdso/clock_gettime.S
deleted file mode 100644
index 5371fd9bc01f..000000000000
--- a/arch/riscv/kernel/vdso/clock_gettime.S
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2017 SiFive
- */
-
-#include <linux/linkage.h>
-#include <asm/unistd.h>
-
- .text
-/* int __vdso_clock_gettime(clockid_t clock_id, struct timespec *tp); */
-ENTRY(__vdso_clock_gettime)
- .cfi_startproc
- /* For now, just do the syscall. */
- li a7, __NR_clock_gettime
- ecall
- ret
- .cfi_endproc
-ENDPROC(__vdso_clock_gettime)
diff --git a/arch/riscv/kernel/vdso/gettimeofday.S b/arch/riscv/kernel/vdso/gettimeofday.S
deleted file mode 100644
index e6fb8af88632..000000000000
--- a/arch/riscv/kernel/vdso/gettimeofday.S
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2017 SiFive
- */
-
-#include <linux/linkage.h>
-#include <asm/unistd.h>
-
- .text
-/* int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz); */
-ENTRY(__vdso_gettimeofday)
- .cfi_startproc
- /* For now, just do the syscall. */
- li a7, __NR_gettimeofday
- ecall
- ret
- .cfi_endproc
-ENDPROC(__vdso_gettimeofday)
diff --git a/arch/riscv/kernel/vdso/vdso.lds.S b/arch/riscv/kernel/vdso/vdso.lds.S
index f66a091cb890..e6f558bca71b 100644
--- a/arch/riscv/kernel/vdso/vdso.lds.S
+++ b/arch/riscv/kernel/vdso/vdso.lds.S
@@ -2,11 +2,13 @@
/*
* Copyright (C) 2012 Regents of the University of California
*/
+#include <asm/page.h>
OUTPUT_ARCH(riscv)
SECTIONS
{
+ PROVIDE(_vdso_data = . + PAGE_SIZE);
. = SIZEOF_HEADERS;
.hash : { *(.hash) } :text
diff --git a/arch/riscv/kernel/vdso/vgettimeofday.c b/arch/riscv/kernel/vdso/vgettimeofday.c
new file mode 100644
index 000000000000..d264943e2e47
--- /dev/null
+++ b/arch/riscv/kernel/vdso/vgettimeofday.c
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copied from arch/arm64/kernel/vdso/vgettimeofday.c
+ *
+ * Copyright (C) 2018 ARM Ltd.
+ * Copyright (C) 2020 SiFive
+ */
+
+#include <linux/time.h>
+#include <linux/types.h>
+
+int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
+{
+ return __cvdso_clock_gettime(clock, ts);
+}
+
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
+{
+ return __cvdso_gettimeofday(tv, tz);
+}
+
+int __vdso_clock_getres(clockid_t clock_id, struct __kernel_timespec *res)
+{
+ return __cvdso_clock_getres(clock_id, res);
+}
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 9996f49959bd..f4adb3684f3d 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -480,17 +480,6 @@ static void __init setup_vm_final(void)
csr_write(CSR_SATP, PFN_DOWN(__pa_symbol(swapper_pg_dir)) | SATP_MODE);
local_flush_tlb_all();
}
-
-void free_initmem(void)
-{
- unsigned long init_begin = (unsigned long)__init_begin;
- unsigned long init_end = (unsigned long)__init_end;
-
- /* Make the region as non-execuatble. */
- set_memory_nx(init_begin, (init_end - init_begin) >> PAGE_SHIFT);
- free_initmem_default(POISON_FREE_INITMEM);
-}
-
#else
asmlinkage void __init setup_vm(uintptr_t dtb_pa)
{
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 3d554887794e..cee3cb6455a2 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -978,7 +978,7 @@ bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
-void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
+bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d0ff26d157bc..d47c19718615 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -3923,11 +3923,13 @@ static void __kvm_inject_pfault_token(struct kvm_vcpu *vcpu, bool start_token,
}
}
-void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
+bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work)
{
trace_kvm_s390_pfault_init(vcpu, work->arch.pfault_token);
__kvm_inject_pfault_token(vcpu, true, work->arch.pfault_token);
+
+ return true;
}
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a16c45460f1b..dde744682e63 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -232,6 +232,7 @@ config X86
select THREAD_INFO_IN_TASK
select USER_STACKTRACE_SUPPORT
select VIRT_TO_BUS
+ select HAVE_ARCH_KCSAN if X86_64
select X86_FEATURE_NAMES if PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI
@@ -821,14 +822,6 @@ config PVH
This option enables the PVH entry point for guest virtual machines
as specified in the x86/HVM direct boot ABI.
-config KVM_DEBUG_FS
- bool "Enable debug information for KVM Guests in debugfs"
- depends on KVM_GUEST && DEBUG_FS
- ---help---
- This option enables collection of various statistics for KVM guest.
- Statistics are displayed in debugfs filesystem. Enabling this option
- may incur significant overhead.
-
config PARAVIRT_TIME_ACCOUNTING
bool "Paravirtual steal time accounting"
depends on PARAVIRT
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 4c5355684321..fe605205b4ce 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -9,7 +9,9 @@
# Changed by many, many contributors over the years.
#
+# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
# Kernel does not boot with kcov instrumentation here.
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 5f7c262bcc99..7619742f91c9 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -17,7 +17,9 @@
# (see scripts/Makefile.lib size_append)
# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
+# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
index 54e03ab26ff3..04e65f0698f6 100644
--- a/arch/x86/entry/vdso/Makefile
+++ b/arch/x86/entry/vdso/Makefile
@@ -10,8 +10,11 @@ ARCH_REL_TYPE_ABS += R_386_GLOB_DAT|R_386_JMP_SLOT|R_386_RELATIVE
include $(srctree)/lib/vdso/Makefile
KBUILD_CFLAGS += $(DISABLE_LTO)
+
+# Sanitizer runtimes are unavailable and cannot be linked here.
KASAN_SANITIZE := n
UBSAN_SANITIZE := n
+KCSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
@@ -29,6 +32,9 @@ vobjs32-y += vdso32/vclock_gettime.o
# files to link into kernel
obj-y += vma.o
+KASAN_SANITIZE_vma.o := y
+UBSAN_SANITIZE_vma.o := y
+KCSAN_SANITIZE_vma.o := y
OBJECT_FILES_NON_STANDARD_vma.o := n
# vDSO images to build
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index 0367efdc5b7a..35460fef39b8 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -201,8 +201,12 @@ arch_test_and_change_bit(long nr, volatile unsigned long *addr)
return GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(btc), *addr, c, "Ir", nr);
}
-static __always_inline bool constant_test_bit(long nr, const volatile unsigned long *addr)
+static __no_kcsan_or_inline bool constant_test_bit(long nr, const volatile unsigned long *addr)
{
+ /*
+ * Because this is a plain access, we need to disable KCSAN here to
+ * avoid double instrumentation via instrumented bitops.
+ */
return ((1UL << (nr & (BITS_PER_LONG-1))) &
(addr[nr >> _BITOPS_LONG_SHIFT])) != 0;
}
diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index 8f1e94f29a16..a338a6deb950 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -89,6 +89,8 @@
#define INTEL_FAM6_COMETLAKE 0xA5
#define INTEL_FAM6_COMETLAKE_L 0xA6
+#define INTEL_FAM6_SAPPHIRERAPIDS_X 0x8F
+
/* "Small Core" Processors (Atom) */
#define INTEL_FAM6_ATOM_BONNELL 0x1C /* Diamondville, Pineview */
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 1da5858501ca..f8998e97457f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1306,7 +1306,6 @@ struct kvm_arch_async_pf {
extern u64 __read_mostly host_efer;
extern struct kvm_x86_ops kvm_x86_ops;
-extern struct kmem_cache *x86_fpu_cache;
#define __KVM_HAVE_ARCH_VM_ALLOC
static inline struct kvm *kvm_arch_alloc_vm(void)
@@ -1671,7 +1670,7 @@ void kvm_make_scan_ioapic_request(struct kvm *kvm);
void kvm_make_scan_ioapic_request_mask(struct kvm *kvm,
unsigned long *vcpu_bitmap);
-void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
+bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
diff --git a/arch/x86/include/asm/vdso/gettimeofday.h b/arch/x86/include/asm/vdso/gettimeofday.h
index 9a6dc9b4ec99..fb81fea99093 100644
--- a/arch/x86/include/asm/vdso/gettimeofday.h
+++ b/arch/x86/include/asm/vdso/gettimeofday.h
@@ -271,6 +271,24 @@ static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
return __vdso_data;
}
+static inline bool arch_vdso_clocksource_ok(const struct vdso_data *vd)
+{
+ return true;
+}
+#define vdso_clocksource_ok arch_vdso_clocksource_ok
+
+/*
+ * Clocksource read value validation to handle PV and HyperV clocksources
+ * which can be invalidated asynchronously and indicate invalidation by
+ * returning U64_MAX, which can be effectively tested by checking for a
+ * negative value after casting it to s64.
+ */
+static inline bool arch_vdso_cycles_ok(u64 cycles)
+{
+ return (s64)cycles >= 0;
+}
+#define vdso_cycles_ok arch_vdso_cycles_ok
+
/*
* x86 specific delta calculation.
*
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 8ef4369a4f06..e77261db2391 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -28,6 +28,10 @@ KASAN_SANITIZE_dumpstack_$(BITS).o := n
KASAN_SANITIZE_stacktrace.o := n
KASAN_SANITIZE_paravirt.o := n
+# With some compiler versions the generated code results in boot hangs, caused
+# by several compilation units. To be safe, disable all instrumentation.
+KCSAN_SANITIZE := n
+
OBJECT_FILES_NON_STANDARD_test_nx.o := y
OBJECT_FILES_NON_STANDARD_paravirt_patch.o := y
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 9244377ed454..e0e2f020ec02 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2051,7 +2051,7 @@ void __init init_apic_mappings(void)
unsigned int new_apicid;
if (apic_validate_deadline_timer())
- pr_debug("TSC deadline timer available\n");
+ pr_info("TSC deadline timer available\n");
if (x2apic_mode) {
boot_cpu_physical_apicid = read_apic_id();
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 7dc4ad68eb41..dba6a83bc349 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -13,6 +13,9 @@ endif
KCOV_INSTRUMENT_common.o := n
KCOV_INSTRUMENT_perf_event.o := n
+# As above, instrumenting secondary CPU boot code causes boot hangs.
+KCSAN_SANITIZE_common.o := n
+
# Make sure load_percpu_segment has no stackprotector
nostackp := $(call cc-option, -fno-stack-protector)
CFLAGS_common.o := $(nostackp)
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index b6f887be440c..0b71970d2d3d 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -588,7 +588,9 @@ early_param("nospectre_v1", nospectre_v1_cmdline);
static enum spectre_v2_mitigation spectre_v2_enabled __ro_after_init =
SPECTRE_V2_NONE;
-static enum spectre_v2_user_mitigation spectre_v2_user __ro_after_init =
+static enum spectre_v2_user_mitigation spectre_v2_user_stibp __ro_after_init =
+ SPECTRE_V2_USER_NONE;
+static enum spectre_v2_user_mitigation spectre_v2_user_ibpb __ro_after_init =
SPECTRE_V2_USER_NONE;
#ifdef CONFIG_RETPOLINE
@@ -734,15 +736,6 @@ spectre_v2_user_select_mitigation(enum spectre_v2_mitigation_cmd v2_cmd)
break;
}
- /*
- * At this point, an STIBP mode other than "off" has been set.
- * If STIBP support is not being forced, check if STIBP always-on
- * is preferred.
- */
- if (mode != SPECTRE_V2_USER_STRICT &&
- boot_cpu_has(X86_FEATURE_AMD_STIBP_ALWAYS_ON))
- mode = SPECTRE_V2_USER_STRICT_PREFERRED;
-
/* Initialize Indirect Branch Prediction Barrier */
if (boot_cpu_has(X86_FEATURE_IBPB)) {
setup_force_cpu_cap(X86_FEATURE_USE_IBPB);
@@ -765,23 +758,36 @@ spectre_v2_user_select_mitigation(enum spectre_v2_mitigation_cmd v2_cmd)
pr_info("mitigation: Enabling %s Indirect Branch Prediction Barrier\n",
static_key_enabled(&switch_mm_always_ibpb) ?
"always-on" : "conditional");
+
+ spectre_v2_user_ibpb = mode;
}
- /* If enhanced IBRS is enabled no STIBP required */
- if (spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED)
+ /*
+ * If enhanced IBRS is enabled or SMT impossible, STIBP is not
+ * required.
+ */
+ if (!smt_possible || spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED)
return;
/*
- * If SMT is not possible or STIBP is not available clear the STIBP
- * mode.
+ * At this point, an STIBP mode other than "off" has been set.
+ * If STIBP support is not being forced, check if STIBP always-on
+ * is preferred.
*/
- if (!smt_possible || !boot_cpu_has(X86_FEATURE_STIBP))
+ if (mode != SPECTRE_V2_USER_STRICT &&
+ boot_cpu_has(X86_FEATURE_AMD_STIBP_ALWAYS_ON))
+ mode = SPECTRE_V2_USER_STRICT_PREFERRED;
+
+ /*
+ * If STIBP is not available, clear the STIBP mode.
+ */
+ if (!boot_cpu_has(X86_FEATURE_STIBP))
mode = SPECTRE_V2_USER_NONE;
+
+ spectre_v2_user_stibp = mode;
+
set_mode:
- spectre_v2_user = mode;
- /* Only print the STIBP mode when SMT possible */
- if (smt_possible)
- pr_info("%s\n", spectre_v2_user_strings[mode]);
+ pr_info("%s\n", spectre_v2_user_strings[mode]);
}
static const char * const spectre_v2_strings[] = {
@@ -1014,7 +1020,7 @@ void cpu_bugs_smt_update(void)
{
mutex_lock(&spec_ctrl_mutex);
- switch (spectre_v2_user) {
+ switch (spectre_v2_user_stibp) {
case SPECTRE_V2_USER_NONE:
break;
case SPECTRE_V2_USER_STRICT:
@@ -1257,14 +1263,19 @@ static int ib_prctl_set(struct task_struct *task, unsigned long ctrl)
{
switch (ctrl) {
case PR_SPEC_ENABLE:
- if (spectre_v2_user == SPECTRE_V2_USER_NONE)
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_NONE &&
+ spectre_v2_user_stibp == SPECTRE_V2_USER_NONE)
return 0;
/*
* Indirect branch speculation is always disabled in strict
- * mode.
+ * mode. It can neither be enabled if it was force-disabled
+ * by a previous prctl call.
+
*/
- if (spectre_v2_user == SPECTRE_V2_USER_STRICT ||
- spectre_v2_user == SPECTRE_V2_USER_STRICT_PREFERRED)
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT_PREFERRED ||
+ task_spec_ib_force_disable(task))
return -EPERM;
task_clear_spec_ib_disable(task);
task_update_spec_tif(task);
@@ -1275,10 +1286,12 @@ static int ib_prctl_set(struct task_struct *task, unsigned long ctrl)
* Indirect branch speculation is always allowed when
* mitigation is force disabled.
*/
- if (spectre_v2_user == SPECTRE_V2_USER_NONE)
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_NONE &&
+ spectre_v2_user_stibp == SPECTRE_V2_USER_NONE)
return -EPERM;
- if (spectre_v2_user == SPECTRE_V2_USER_STRICT ||
- spectre_v2_user == SPECTRE_V2_USER_STRICT_PREFERRED)
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT_PREFERRED)
return 0;
task_set_spec_ib_disable(task);
if (ctrl == PR_SPEC_FORCE_DISABLE)
@@ -1309,7 +1322,8 @@ void arch_seccomp_spec_mitigate(struct task_struct *task)
{
if (ssb_mode == SPEC_STORE_BYPASS_SECCOMP)
ssb_prctl_set(task, PR_SPEC_FORCE_DISABLE);
- if (spectre_v2_user == SPECTRE_V2_USER_SECCOMP)
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_SECCOMP ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_SECCOMP)
ib_prctl_set(task, PR_SPEC_FORCE_DISABLE);
}
#endif
@@ -1340,22 +1354,24 @@ static int ib_prctl_get(struct task_struct *task)
if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V2))
return PR_SPEC_NOT_AFFECTED;
- switch (spectre_v2_user) {
- case SPECTRE_V2_USER_NONE:
+ if (spectre_v2_user_ibpb == SPECTRE_V2_USER_NONE &&
+ spectre_v2_user_stibp == SPECTRE_V2_USER_NONE)
return PR_SPEC_ENABLE;
- case SPECTRE_V2_USER_PRCTL:
- case SPECTRE_V2_USER_SECCOMP:
+ else if (spectre_v2_user_ibpb == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT_PREFERRED)
+ return PR_SPEC_DISABLE;
+ else if (spectre_v2_user_ibpb == SPECTRE_V2_USER_PRCTL ||
+ spectre_v2_user_ibpb == SPECTRE_V2_USER_SECCOMP ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_PRCTL ||
+ spectre_v2_user_stibp == SPECTRE_V2_USER_SECCOMP) {
if (task_spec_ib_force_disable(task))
return PR_SPEC_PRCTL | PR_SPEC_FORCE_DISABLE;
if (task_spec_ib_disable(task))
return PR_SPEC_PRCTL | PR_SPEC_DISABLE;
return PR_SPEC_PRCTL | PR_SPEC_ENABLE;
- case SPECTRE_V2_USER_STRICT:
- case SPECTRE_V2_USER_STRICT_PREFERRED:
- return PR_SPEC_DISABLE;
- default:
+ } else
return PR_SPEC_NOT_AFFECTED;
- }
}
int arch_prctl_spec_ctrl_get(struct task_struct *task, unsigned long which)
@@ -1594,7 +1610,7 @@ static char *stibp_state(void)
if (spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED)
return "";
- switch (spectre_v2_user) {
+ switch (spectre_v2_user_stibp) {
case SPECTRE_V2_USER_NONE:
return ", STIBP: disabled";
case SPECTRE_V2_USER_STRICT:
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 63926c94eb5f..c25a67a34bd3 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1142,9 +1142,12 @@ void switch_to_sld(unsigned long tifn)
static const struct x86_cpu_id split_lock_cpu_ids[] __initconst = {
X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, 0),
X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, 0),
+ X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D, 0),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT, 1),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D, 1),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L, 1),
+ X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, 1),
+ X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, 1),
{}
};
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 4d13c57f370a..983cd53ed4c9 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -991,7 +991,15 @@ void __init e820__reserve_setup_data(void)
while (pa_data) {
data = early_memremap(pa_data, sizeof(*data));
e820__range_update(pa_data, sizeof(*data)+data->len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN);
- e820__range_update_kexec(pa_data, sizeof(*data)+data->len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN);
+
+ /*
+ * SETUP_EFI is supplied by kexec and does not need to be
+ * reserved.
+ */
+ if (data->type != SETUP_EFI)
+ e820__range_update_kexec(pa_data,
+ sizeof(*data) + data->len,
+ E820_TYPE_RAM, E820_TYPE_RESERVED_KERN);
if (data->type == SETUP_INDIRECT &&
((struct setup_indirect *)data->data)->type != SETUP_INDIRECT) {
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index d00f7c430e65..df63786e7bfa 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -21,7 +21,6 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kprobes.h>
-#include <linux/debugfs.h>
#include <linux/nmi.h>
#include <linux/swait.h>
#include <asm/timer.h>
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 8e3d0347b664..f362ce0d5ac0 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -545,28 +545,20 @@ static __always_inline void __speculation_ctrl_update(unsigned long tifp,
lockdep_assert_irqs_disabled();
- /*
- * If TIF_SSBD is different, select the proper mitigation
- * method. Note that if SSBD mitigation is disabled or permanentely
- * enabled this branch can't be taken because nothing can set
- * TIF_SSBD.
- */
- if (tif_diff & _TIF_SSBD) {
- if (static_cpu_has(X86_FEATURE_VIRT_SSBD)) {
+ /* Handle change of TIF_SSBD depending on the mitigation method. */
+ if (static_cpu_has(X86_FEATURE_VIRT_SSBD)) {
+ if (tif_diff & _TIF_SSBD)
amd_set_ssb_virt_state(tifn);
- } else if (static_cpu_has(X86_FEATURE_LS_CFG_SSBD)) {
+ } else if (static_cpu_has(X86_FEATURE_LS_CFG_SSBD)) {
+ if (tif_diff & _TIF_SSBD)
amd_set_core_ssb_state(tifn);
- } else if (static_cpu_has(X86_FEATURE_SPEC_CTRL_SSBD) ||
- static_cpu_has(X86_FEATURE_AMD_SSBD)) {
- msr |= ssbd_tif_to_spec_ctrl(tifn);
- updmsr = true;
- }
+ } else if (static_cpu_has(X86_FEATURE_SPEC_CTRL_SSBD) ||
+ static_cpu_has(X86_FEATURE_AMD_SSBD)) {
+ updmsr |= !!(tif_diff & _TIF_SSBD);
+ msr |= ssbd_tif_to_spec_ctrl(tifn);
}
- /*
- * Only evaluate TIF_SPEC_IB if conditional STIBP is enabled,
- * otherwise avoid the MSR write.
- */
+ /* Only evaluate TIF_SPEC_IB if conditional STIBP is enabled. */
if (IS_ENABLED(CONFIG_SMP) &&
static_branch_unlikely(&switch_to_cond_stibp)) {
updmsr |= !!(tif_diff & _TIF_SPEC_IB);
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index e040ba6be27b..0ec7ced727fe 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -197,6 +197,14 @@ static const struct dmi_system_id reboot_dmi_table[] __initconst = {
DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5"),
},
},
+ { /* Handle problems with rebooting on Apple MacBook6,1 */
+ .callback = set_pci_reboot,
+ .ident = "Apple MacBook6,1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
+ },
+ },
{ /* Handle problems with rebooting on Apple MacBookPro5 */
.callback = set_pci_reboot,
.ident = "Apple MacBookPro5",
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index 371a6b348e44..e42faa792c07 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -25,10 +25,6 @@
#include <asm/hpet.h>
#include <asm/time.h>
-#ifdef CONFIG_X86_64
-__visible volatile unsigned long jiffies __cacheline_aligned_in_smp = INITIAL_JIFFIES;
-#endif
-
unsigned long profile_pc(struct pt_regs *regs)
{
unsigned long pc = instruction_pointer(regs);
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index b4c6b6f35548..3bfc8dd8a43d 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -40,13 +40,13 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT)
#ifdef CONFIG_X86_32
OUTPUT_ARCH(i386)
ENTRY(phys_startup_32)
-jiffies = jiffies_64;
#else
OUTPUT_ARCH(i386:x86-64)
ENTRY(phys_startup_64)
-jiffies_64 = jiffies;
#endif
+jiffies = jiffies_64;
+
#if defined(CONFIG_X86_64)
/*
* On 64-bit, align RODATA to 2MB so we retain large page mappings for
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 253b8e875ccd..8a294f9747aa 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -181,17 +181,14 @@ int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
r = -E2BIG;
if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
goto out;
- r = -ENOMEM;
if (cpuid->nent) {
- cpuid_entries =
- vmalloc(array_size(sizeof(struct kvm_cpuid_entry),
- cpuid->nent));
- if (!cpuid_entries)
- goto out;
- r = -EFAULT;
- if (copy_from_user(cpuid_entries, entries,
- cpuid->nent * sizeof(struct kvm_cpuid_entry)))
+ cpuid_entries = vmemdup_user(entries,
+ array_size(sizeof(struct kvm_cpuid_entry),
+ cpuid->nent));
+ if (IS_ERR(cpuid_entries)) {
+ r = PTR_ERR(cpuid_entries);
goto out;
+ }
}
for (i = 0; i < cpuid->nent; i++) {
vcpu->arch.cpuid_entries[i].function = cpuid_entries[i].function;
@@ -211,8 +208,8 @@ int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
kvm_x86_ops.cpuid_update(vcpu);
r = kvm_update_cpuid(vcpu);
+ kvfree(cpuid_entries);
out:
- vfree(cpuid_entries);
return r;
}
@@ -325,7 +322,7 @@ void kvm_set_cpu_caps(void)
);
kvm_cpu_cap_mask(CPUID_7_ECX,
- F(AVX512VBMI) | F(LA57) | 0 /*PKU*/ | 0 /*OSPKE*/ | F(RDPID) |
+ F(AVX512VBMI) | F(LA57) | F(PKU) | 0 /*OSPKE*/ | F(RDPID) |
F(AVX512_VPOPCNTDQ) | F(UMIP) | F(AVX512_VBMI2) | F(GFNI) |
F(VAES) | F(VPCLMULQDQ) | F(AVX512_VNNI) | F(AVX512_BITALG) |
F(CLDEMOTE) | F(MOVDIRI) | F(MOVDIR64B) | 0 /*WAITPKG*/
@@ -334,6 +331,13 @@ void kvm_set_cpu_caps(void)
if (cpuid_ecx(7) & F(LA57))
kvm_cpu_cap_set(X86_FEATURE_LA57);
+ /*
+ * PKU not yet implemented for shadow paging and requires OSPKE
+ * to be set on the host. Clear it if that is not the case
+ */
+ if (!tdp_enabled || !boot_cpu_has(X86_FEATURE_OSPKE))
+ kvm_cpu_cap_clear(X86_FEATURE_PKU);
+
kvm_cpu_cap_mask(CPUID_7_EDX,
F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) |
@@ -426,7 +430,7 @@ EXPORT_SYMBOL_GPL(kvm_set_cpu_caps);
struct kvm_cpuid_array {
struct kvm_cpuid_entry2 *entries;
- const int maxnent;
+ int maxnent;
int nent;
};
@@ -870,7 +874,6 @@ int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
struct kvm_cpuid_array array = {
.nent = 0,
- .maxnent = cpuid->nent,
};
int r, i;
@@ -887,6 +890,8 @@ int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
if (!array.entries)
return -ENOMEM;
+ array.maxnent = cpuid->nent;
+
for (i = 0; i < ARRAY_SIZE(funcs); i++) {
r = get_cpuid_func(&array, funcs[i], type);
if (r)
diff --git a/arch/x86/kvm/debugfs.c b/arch/x86/kvm/debugfs.c
index 018aebce33ff..7e818d64bb4d 100644
--- a/arch/x86/kvm/debugfs.c
+++ b/arch/x86/kvm/debugfs.c
@@ -43,22 +43,22 @@ static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n");
-void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
{
- debugfs_create_file("tsc-offset", 0444, vcpu->debugfs_dentry, vcpu,
+ debugfs_create_file("tsc-offset", 0444, debugfs_dentry, vcpu,
&vcpu_tsc_offset_fops);
if (lapic_in_kernel(vcpu))
debugfs_create_file("lapic_timer_advance_ns", 0444,
- vcpu->debugfs_dentry, vcpu,
+ debugfs_dentry, vcpu,
&vcpu_timer_advance_ns_fops);
if (kvm_has_tsc_control) {
debugfs_create_file("tsc-scaling-ratio", 0444,
- vcpu->debugfs_dentry, vcpu,
+ debugfs_dentry, vcpu,
&vcpu_tsc_scaling_fops);
debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
- vcpu->debugfs_dentry, vcpu,
+ debugfs_dentry, vcpu,
&vcpu_tsc_scaling_frac_fops);
}
}
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index de5476f8683e..d0e2825ae617 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4800,8 +4800,12 @@ static const struct opcode twobyte_table[256] = {
GP(ModRM | DstReg | SrcMem | Mov | Sse, &pfx_0f_10_0f_11),
GP(ModRM | DstMem | SrcReg | Mov | Sse, &pfx_0f_10_0f_11),
N, N, N, N, N, N,
- D(ImplicitOps | ModRM | SrcMem | NoAccess),
- N, N, N, N, N, N, D(ImplicitOps | ModRM | SrcMem | NoAccess),
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 4 * prefetch + 4 * reserved NOP */
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), N, N,
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 8 * reserved NOP */
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 8 * reserved NOP */
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 8 * reserved NOP */
+ D(ImplicitOps | ModRM | SrcMem | NoAccess), /* NOP + 7 * reserved NOP */
/* 0x20 - 0x2F */
DIP(ModRM | DstMem | Priv | Op3264 | NoMod, cr_read, check_cr_read),
DIP(ModRM | DstMem | Priv | Op3264 | NoMod, dr_read, check_dr_read),
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index febca334c320..a6e218c6140d 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -462,7 +462,6 @@ static int pit_ioport_write(struct kvm_vcpu *vcpu,
if (channel == 3) {
/* Read-Back Command. */
for (channel = 0; channel < 3; channel++) {
- s = &pit_state->channels[channel];
if (val & (2 << channel)) {
if (!(val & 0x20))
pit_latch_count(pit, channel);
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 8a6db11dcb43..6bceafb19108 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -258,7 +258,7 @@ void sync_nested_vmcb_control(struct vcpu_svm *svm)
/* Only a few fields of int_ctl are written by the processor. */
mask = V_IRQ_MASK | V_TPR_MASK;
if (!(svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK) &&
- is_intercept(svm, SVM_EXIT_VINTR)) {
+ is_intercept(svm, INTERCEPT_VINTR)) {
/*
* In order to request an interrupt window, L0 is usurping
* svm->vmcb->control.int_ctl and possibly setting V_IRQ
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 7502cd65528f..8ccfa4197d9c 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1378,6 +1378,8 @@ static void svm_clear_vintr(struct vcpu_svm *svm)
/* Drop int_ctl fields related to VINTR injection. */
svm->vmcb->control.int_ctl &= mask;
if (is_guest_mode(&svm->vcpu)) {
+ svm->nested.hsave->control.int_ctl &= mask;
+
WARN_ON((svm->vmcb->control.int_ctl & V_TPR_MASK) !=
(svm->nested.ctl.int_ctl & V_TPR_MASK));
svm->vmcb->control.int_ctl |= svm->nested.ctl.int_ctl & ~mask;
@@ -1999,7 +2001,7 @@ void svm_set_gif(struct vcpu_svm *svm, bool value)
*/
if (vgif_enabled(svm))
clr_intercept(svm, INTERCEPT_STGI);
- if (is_intercept(svm, SVM_EXIT_VINTR))
+ if (is_intercept(svm, INTERCEPT_VINTR))
svm_clear_vintr(svm);
enable_gif(svm);
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 2e7238a57fc1..d1af20b050a8 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -4624,19 +4624,24 @@ void nested_vmx_pmu_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
}
}
-static int nested_vmx_get_vmptr(struct kvm_vcpu *vcpu, gpa_t *vmpointer)
+static int nested_vmx_get_vmptr(struct kvm_vcpu *vcpu, gpa_t *vmpointer,
+ int *ret)
{
gva_t gva;
struct x86_exception e;
+ int r;
if (get_vmx_mem_address(vcpu, vmx_get_exit_qual(vcpu),
vmcs_read32(VMX_INSTRUCTION_INFO), false,
- sizeof(*vmpointer), &gva))
- return 1;
+ sizeof(*vmpointer), &gva)) {
+ *ret = 1;
+ return -EINVAL;
+ }
- if (kvm_read_guest_virt(vcpu, gva, vmpointer, sizeof(*vmpointer), &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
+ r = kvm_read_guest_virt(vcpu, gva, vmpointer, sizeof(*vmpointer), &e);
+ if (r != X86EMUL_CONTINUE) {
+ *ret = vmx_handle_memory_failure(vcpu, r, &e);
+ return -EINVAL;
}
return 0;
@@ -4764,8 +4769,8 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
return 1;
}
- if (nested_vmx_get_vmptr(vcpu, &vmptr))
- return 1;
+ if (nested_vmx_get_vmptr(vcpu, &vmptr, &ret))
+ return ret;
/*
* SDM 3: 24.11.5
@@ -4838,12 +4843,13 @@ static int handle_vmclear(struct kvm_vcpu *vcpu)
u32 zero = 0;
gpa_t vmptr;
u64 evmcs_gpa;
+ int r;
if (!nested_vmx_check_permission(vcpu))
return 1;
- if (nested_vmx_get_vmptr(vcpu, &vmptr))
- return 1;
+ if (nested_vmx_get_vmptr(vcpu, &vmptr, &r))
+ return r;
if (!page_address_valid(vcpu, vmptr))
return nested_vmx_failValid(vcpu,
@@ -4902,7 +4908,7 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
u64 value;
gva_t gva = 0;
short offset;
- int len;
+ int len, r;
if (!nested_vmx_check_permission(vcpu))
return 1;
@@ -4943,10 +4949,9 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
instr_info, true, len, &gva))
return 1;
/* _system ok, nested_vmx_check_permission has verified cpl=0 */
- if (kvm_write_guest_virt_system(vcpu, gva, &value, len, &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_write_guest_virt_system(vcpu, gva, &value, len, &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
}
return nested_vmx_succeed(vcpu);
@@ -4987,7 +4992,7 @@ static int handle_vmwrite(struct kvm_vcpu *vcpu)
unsigned long field;
short offset;
gva_t gva;
- int len;
+ int len, r;
/*
* The value to write might be 32 or 64 bits, depending on L1's long
@@ -5017,10 +5022,9 @@ static int handle_vmwrite(struct kvm_vcpu *vcpu)
if (get_vmx_mem_address(vcpu, exit_qualification,
instr_info, false, len, &gva))
return 1;
- if (kvm_read_guest_virt(vcpu, gva, &value, len, &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_read_guest_virt(vcpu, gva, &value, len, &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
}
field = kvm_register_readl(vcpu, (((instr_info) >> 28) & 0xf));
@@ -5103,12 +5107,13 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
gpa_t vmptr;
+ int r;
if (!nested_vmx_check_permission(vcpu))
return 1;
- if (nested_vmx_get_vmptr(vcpu, &vmptr))
- return 1;
+ if (nested_vmx_get_vmptr(vcpu, &vmptr, &r))
+ return r;
if (!page_address_valid(vcpu, vmptr))
return nested_vmx_failValid(vcpu,
@@ -5170,6 +5175,7 @@ static int handle_vmptrst(struct kvm_vcpu *vcpu)
gpa_t current_vmptr = to_vmx(vcpu)->nested.current_vmptr;
struct x86_exception e;
gva_t gva;
+ int r;
if (!nested_vmx_check_permission(vcpu))
return 1;
@@ -5181,11 +5187,11 @@ static int handle_vmptrst(struct kvm_vcpu *vcpu)
true, sizeof(gpa_t), &gva))
return 1;
/* *_system ok, nested_vmx_check_permission has verified cpl=0 */
- if (kvm_write_guest_virt_system(vcpu, gva, (void *)&current_vmptr,
- sizeof(gpa_t), &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_write_guest_virt_system(vcpu, gva, (void *)&current_vmptr,
+ sizeof(gpa_t), &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
+
return nested_vmx_succeed(vcpu);
}
@@ -5209,7 +5215,7 @@ static int handle_invept(struct kvm_vcpu *vcpu)
struct {
u64 eptp, gpa;
} operand;
- int i;
+ int i, r;
if (!(vmx->nested.msrs.secondary_ctls_high &
SECONDARY_EXEC_ENABLE_EPT) ||
@@ -5236,10 +5242,9 @@ static int handle_invept(struct kvm_vcpu *vcpu)
if (get_vmx_mem_address(vcpu, vmx_get_exit_qual(vcpu),
vmx_instruction_info, false, sizeof(operand), &gva))
return 1;
- if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
/*
* Nested EPT roots are always held through guest_mmu,
@@ -5291,6 +5296,7 @@ static int handle_invvpid(struct kvm_vcpu *vcpu)
u64 gla;
} operand;
u16 vpid02;
+ int r;
if (!(vmx->nested.msrs.secondary_ctls_high &
SECONDARY_EXEC_ENABLE_VPID) ||
@@ -5318,10 +5324,10 @@ static int handle_invvpid(struct kvm_vcpu *vcpu)
if (get_vmx_mem_address(vcpu, vmx_get_exit_qual(vcpu),
vmx_instruction_info, false, sizeof(operand), &gva))
return 1;
- if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
+
if (operand.vpid >> 16)
return nested_vmx_failValid(vcpu,
VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
@@ -5666,7 +5672,7 @@ static bool nested_vmx_l0_wants_exit(struct kvm_vcpu *vcpu, u32 exit_reason)
{
u32 intr_info;
- switch (exit_reason) {
+ switch ((u16)exit_reason) {
case EXIT_REASON_EXCEPTION_NMI:
intr_info = vmx_get_intr_info(vcpu);
if (is_nmi(intr_info))
@@ -5727,7 +5733,7 @@ static bool nested_vmx_l1_wants_exit(struct kvm_vcpu *vcpu, u32 exit_reason)
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
u32 intr_info;
- switch (exit_reason) {
+ switch ((u16)exit_reason) {
case EXIT_REASON_EXCEPTION_NMI:
intr_info = vmx_get_intr_info(vcpu);
if (is_nmi(intr_info))
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index d33d890b605f..bdcce65c7a1d 100644
--- a/arch/x86/kvm/vmx/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
@@ -181,7 +181,7 @@ static bool intel_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
ret = pmu->version > 1;
break;
case MSR_IA32_PERF_CAPABILITIES:
- ret = guest_cpuid_has(vcpu, X86_FEATURE_PDCM);
+ ret = 1;
break;
default:
ret = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0) ||
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 2b5ba6063a2d..36c771728c8c 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -1600,6 +1600,32 @@ static int skip_emulated_instruction(struct kvm_vcpu *vcpu)
return 1;
}
+/*
+ * Handles kvm_read/write_guest_virt*() result and either injects #PF or returns
+ * KVM_EXIT_INTERNAL_ERROR for cases not currently handled by KVM. Return value
+ * indicates whether exit to userspace is needed.
+ */
+int vmx_handle_memory_failure(struct kvm_vcpu *vcpu, int r,
+ struct x86_exception *e)
+{
+ if (r == X86EMUL_PROPAGATE_FAULT) {
+ kvm_inject_emulated_page_fault(vcpu, e);
+ return 1;
+ }
+
+ /*
+ * In case kvm_read/write_guest_virt*() failed with X86EMUL_IO_NEEDED
+ * while handling a VMX instruction KVM could've handled the request
+ * correctly by exiting to userspace and performing I/O but there
+ * doesn't seem to be a real use-case behind such requests, just return
+ * KVM_EXIT_INTERNAL_ERROR for now.
+ */
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+ vcpu->run->internal.ndata = 0;
+
+ return 0;
+}
/*
* Recognizes a pending MTF VM-exit and records the nested state for later
@@ -5486,6 +5512,7 @@ static int handle_invpcid(struct kvm_vcpu *vcpu)
u64 pcid;
u64 gla;
} operand;
+ int r;
if (!guest_cpuid_has(vcpu, X86_FEATURE_INVPCID)) {
kvm_queue_exception(vcpu, UD_VECTOR);
@@ -5508,10 +5535,9 @@ static int handle_invpcid(struct kvm_vcpu *vcpu)
sizeof(operand), &gva))
return 1;
- if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
- kvm_inject_emulated_page_fault(vcpu, &e);
- return 1;
- }
+ r = kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e);
+ if (r != X86EMUL_CONTINUE)
+ return vmx_handle_memory_failure(vcpu, r, &e);
if (operand.pcid >> 12 != 0) {
kvm_inject_gp(vcpu, 0);
@@ -7282,10 +7308,6 @@ static __init void vmx_set_cpu_caps(void)
if (vmx_pt_mode_is_host_guest())
kvm_cpu_cap_check_and_set(X86_FEATURE_INTEL_PT);
- /* PKU is not yet implemented for shadow paging. */
- if (enable_ept && boot_cpu_has(X86_FEATURE_OSPKE))
- kvm_cpu_cap_check_and_set(X86_FEATURE_PKU);
-
if (vmx_umip_emulated())
kvm_cpu_cap_set(X86_FEATURE_UMIP);
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index 672c28f17e49..8a83b5edc820 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -355,6 +355,8 @@ struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr);
void pt_update_intercept_for_msr(struct vcpu_vmx *vmx);
void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp);
int vmx_find_msr_index(struct vmx_msrs *m, u32 msr);
+int vmx_handle_memory_failure(struct kvm_vcpu *vcpu, int r,
+ struct x86_exception *e);
#define POSTED_INTR_ON 0
#define POSTED_INTR_SN 1
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 9e41b5135340..00c88c2f34e4 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -239,8 +239,7 @@ u64 __read_mostly host_xcr0;
u64 __read_mostly supported_xcr0;
EXPORT_SYMBOL_GPL(supported_xcr0);
-struct kmem_cache *x86_fpu_cache;
-EXPORT_SYMBOL_GPL(x86_fpu_cache);
+static struct kmem_cache *x86_fpu_cache;
static struct kmem_cache *x86_emulator_cache;
@@ -5647,13 +5646,6 @@ int kvm_write_guest_virt_system(struct kvm_vcpu *vcpu, gva_t addr, void *val,
/* kvm_write_guest_virt_system can pull in tons of pages. */
vcpu->arch.l1tf_flush_l1d = true;
- /*
- * FIXME: this should call handle_emulation_failure if X86EMUL_IO_NEEDED
- * is returned, but our callers are not ready for that and they blindly
- * call kvm_inject_page_fault. Ensure that they at least do not leak
- * uninitialized kernel stack memory into cr2 and error code.
- */
- memset(exception, 0, sizeof(*exception));
return kvm_write_guest_virt_helper(addr, val, bytes, vcpu,
PFERR_WRITE_MASK, exception);
}
@@ -7018,7 +7010,7 @@ restart:
if (!ctxt->have_exception ||
exception_type(ctxt->exception.vector) == EXCPT_TRAP) {
kvm_rip_write(vcpu, ctxt->eip);
- if (r && ctxt->tf)
+ if (r && (ctxt->tf || (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)))
r = kvm_vcpu_do_singlestep(vcpu);
if (kvm_x86_ops.update_emulated_instruction)
kvm_x86_ops.update_emulated_instruction(vcpu);
@@ -8277,9 +8269,8 @@ static void vcpu_load_eoi_exitmap(struct kvm_vcpu *vcpu)
kvm_x86_ops.load_eoi_exitmap(vcpu, eoi_exit_bitmap);
}
-int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
- unsigned long start, unsigned long end,
- bool blockable)
+void kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
+ unsigned long start, unsigned long end)
{
unsigned long apic_address;
@@ -8290,8 +8281,6 @@ int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
apic_address = gfn_to_hva(kvm, APIC_DEFAULT_PHYS_BASE >> PAGE_SHIFT);
if (start <= apic_address && apic_address < end)
kvm_make_all_cpus_request(kvm, KVM_REQ_APIC_PAGE_RELOAD);
-
- return 0;
}
void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu)
@@ -9962,13 +9951,8 @@ int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size)
if (!slot || !slot->npages)
return 0;
- /*
- * Stuff a non-canonical value to catch use-after-delete. This
- * ends up being 0 on 32-bit KVM, but there's no better
- * alternative.
- */
- hva = (unsigned long)(0xdeadull << 48);
old_npages = slot->npages;
+ hva = 0;
}
for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
@@ -10140,43 +10124,65 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
}
static void kvm_mmu_slot_apply_flags(struct kvm *kvm,
- struct kvm_memory_slot *new)
+ struct kvm_memory_slot *old,
+ struct kvm_memory_slot *new,
+ enum kvm_mr_change change)
{
- /* Still write protect RO slot */
- if (new->flags & KVM_MEM_READONLY) {
- kvm_mmu_slot_remove_write_access(kvm, new, PG_LEVEL_4K);
+ /*
+ * Nothing to do for RO slots or CREATE/MOVE/DELETE of a slot.
+ * See comments below.
+ */
+ if ((change != KVM_MR_FLAGS_ONLY) || (new->flags & KVM_MEM_READONLY))
return;
- }
/*
- * Call kvm_x86_ops dirty logging hooks when they are valid.
- *
- * kvm_x86_ops.slot_disable_log_dirty is called when:
- *
- * - KVM_MR_CREATE with dirty logging is disabled
- * - KVM_MR_FLAGS_ONLY with dirty logging is disabled in new flag
- *
- * The reason is, in case of PML, we need to set D-bit for any slots
- * with dirty logging disabled in order to eliminate unnecessary GPA
- * logging in PML buffer (and potential PML buffer full VMEXIT). This
- * guarantees leaving PML enabled during guest's lifetime won't have
- * any additional overhead from PML when guest is running with dirty
- * logging disabled for memory slots.
+ * Dirty logging tracks sptes in 4k granularity, meaning that large
+ * sptes have to be split. If live migration is successful, the guest
+ * in the source machine will be destroyed and large sptes will be
+ * created in the destination. However, if the guest continues to run
+ * in the source machine (for example if live migration fails), small
+ * sptes will remain around and cause bad performance.
*
- * kvm_x86_ops.slot_enable_log_dirty is called when switching new slot
- * to dirty logging mode.
+ * Scan sptes if dirty logging has been stopped, dropping those
+ * which can be collapsed into a single large-page spte. Later
+ * page faults will create the large-page sptes.
*
- * If kvm_x86_ops dirty logging hooks are invalid, use write protect.
+ * There is no need to do this in any of the following cases:
+ * CREATE: No dirty mappings will already exist.
+ * MOVE/DELETE: The old mappings will already have been cleaned up by
+ * kvm_arch_flush_shadow_memslot()
+ */
+ if ((old->flags & KVM_MEM_LOG_DIRTY_PAGES) &&
+ !(new->flags & KVM_MEM_LOG_DIRTY_PAGES))
+ kvm_mmu_zap_collapsible_sptes(kvm, new);
+
+ /*
+ * Enable or disable dirty logging for the slot.
*
- * In case of write protect:
+ * For KVM_MR_DELETE and KVM_MR_MOVE, the shadow pages of the old
+ * slot have been zapped so no dirty logging updates are needed for
+ * the old slot.
+ * For KVM_MR_CREATE and KVM_MR_MOVE, once the new slot is visible
+ * any mappings that might be created in it will consume the
+ * properties of the new slot and do not need to be updated here.
*
- * Write protect all pages for dirty logging.
+ * When PML is enabled, the kvm_x86_ops dirty logging hooks are
+ * called to enable/disable dirty logging.
*
- * All the sptes including the large sptes which point to this
- * slot are set to readonly. We can not create any new large
- * spte on this slot until the end of the logging.
+ * When disabling dirty logging with PML enabled, the D-bit is set
+ * for sptes in the slot in order to prevent unnecessary GPA
+ * logging in the PML buffer (and potential PML buffer full VMEXIT).
+ * This guarantees leaving PML enabled for the guest's lifetime
+ * won't have any additional overhead from PML when the guest is
+ * running with dirty logging disabled.
*
+ * When enabling dirty logging, large sptes are write-protected
+ * so they can be split on first write. New large sptes cannot
+ * be created for this slot until the end of the logging.
* See the comments in fast_page_fault().
+ * For small sptes, nothing is done if the dirty log is in the
+ * initial-all-set state. Otherwise, depending on whether pml
+ * is enabled the D-bit or the W-bit will be cleared.
*/
if (new->flags & KVM_MEM_LOG_DIRTY_PAGES) {
if (kvm_x86_ops.slot_enable_log_dirty) {
@@ -10213,39 +10219,9 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
kvm_mmu_calculate_default_mmu_pages(kvm));
/*
- * Dirty logging tracks sptes in 4k granularity, meaning that large
- * sptes have to be split. If live migration is successful, the guest
- * in the source machine will be destroyed and large sptes will be
- * created in the destination. However, if the guest continues to run
- * in the source machine (for example if live migration fails), small
- * sptes will remain around and cause bad performance.
- *
- * Scan sptes if dirty logging has been stopped, dropping those
- * which can be collapsed into a single large-page spte. Later
- * page faults will create the large-page sptes.
- *
- * There is no need to do this in any of the following cases:
- * CREATE: No dirty mappings will already exist.
- * MOVE/DELETE: The old mappings will already have been cleaned up by
- * kvm_arch_flush_shadow_memslot()
- */
- if (change == KVM_MR_FLAGS_ONLY &&
- (old->flags & KVM_MEM_LOG_DIRTY_PAGES) &&
- !(new->flags & KVM_MEM_LOG_DIRTY_PAGES))
- kvm_mmu_zap_collapsible_sptes(kvm, new);
-
- /*
- * Set up write protection and/or dirty logging for the new slot.
- *
- * For KVM_MR_DELETE and KVM_MR_MOVE, the shadow pages of old slot have
- * been zapped so no dirty logging staff is needed for old slot. For
- * KVM_MR_FLAGS_ONLY, the old slot is essentially the same one as the
- * new and it's also covered when dealing with the new slot.
- *
* FIXME: const-ify all uses of struct kvm_memory_slot.
*/
- if (change != KVM_MR_DELETE)
- kvm_mmu_slot_apply_flags(kvm, (struct kvm_memory_slot *) new);
+ kvm_mmu_slot_apply_flags(kvm, old, (struct kvm_memory_slot *) new, change);
/* Free the arrays associated with the old memslot. */
if (change == KVM_MR_MOVE)
@@ -10530,7 +10506,7 @@ bool kvm_can_do_async_pf(struct kvm_vcpu *vcpu)
return kvm_arch_interrupt_allowed(vcpu);
}
-void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
+bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work)
{
struct x86_exception fault;
@@ -10547,6 +10523,7 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
fault.address = work->arch.token;
fault.async_page_fault = true;
kvm_inject_page_fault(vcpu, &fault);
+ return true;
} else {
/*
* It is not possible to deliver a paravirtualized asynchronous
@@ -10557,6 +10534,7 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
* fault is retried, hopefully the page will be ready in the host.
*/
kvm_make_request(KVM_REQ_APF_HALT, vcpu);
+ return false;
}
}
@@ -10574,7 +10552,8 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
kvm_del_async_pf_gfn(vcpu, work->arch.gfn);
trace_kvm_async_pf_ready(work->arch.token, work->cr2_or_gpa);
- if (kvm_pv_async_pf_enabled(vcpu) &&
+ if ((work->wakeup_all || work->notpresent_injected) &&
+ kvm_pv_async_pf_enabled(vcpu) &&
!apf_put_user_ready(vcpu, work->arch.token)) {
vcpu->arch.apf.pageready_pending = true;
kvm_apic_set_irq(vcpu, &irq, NULL);
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 5246db42de45..6110bce7237b 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -6,10 +6,19 @@
# Produces uninteresting flaky coverage.
KCOV_INSTRUMENT_delay.o := n
+# KCSAN uses udelay for introducing watchpoint delay; avoid recursion.
+KCSAN_SANITIZE_delay.o := n
+ifdef CONFIG_KCSAN
+# In case KCSAN+lockdep+ftrace are enabled, disable ftrace for delay.o to avoid
+# lockdep -> [other libs] -> KCSAN -> udelay -> ftrace -> lockdep recursion.
+CFLAGS_REMOVE_delay.o = $(CC_FLAGS_FTRACE)
+endif
+
# Early boot use of cmdline; don't instrument it
ifdef CONFIG_AMD_MEM_ENCRYPT
KCOV_INSTRUMENT_cmdline.o := n
KASAN_SANITIZE_cmdline.o := n
+KCSAN_SANITIZE_cmdline.o := n
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_cmdline.o = -pg
diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
index 98f7c6fa2eaa..f7fd0e868c9c 100644
--- a/arch/x86/mm/Makefile
+++ b/arch/x86/mm/Makefile
@@ -7,6 +7,10 @@ KCOV_INSTRUMENT_mem_encrypt_identity.o := n
KASAN_SANITIZE_mem_encrypt.o := n
KASAN_SANITIZE_mem_encrypt_identity.o := n
+# Disable KCSAN entirely, because otherwise we get warnings that some functions
+# reference __initdata sections.
+KCSAN_SANITIZE := n
+
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_mem_encrypt.o = -pg
CFLAGS_REMOVE_mem_encrypt_identity.o = -pg
diff --git a/arch/x86/purgatory/.gitignore b/arch/x86/purgatory/.gitignore
new file mode 100644
index 000000000000..d2be1500671d
--- /dev/null
+++ b/arch/x86/purgatory/.gitignore
@@ -0,0 +1 @@
+purgatory.chk
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index fb4ee5444379..b04e6e72a592 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -14,10 +14,18 @@ $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE
CFLAGS_sha256.o := -D__DISABLE_EXPORTS
-LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
-targets += purgatory.ro
-
+# When linking purgatory.ro with -r unresolved symbols are not checked,
+# also link a purgatory.chk binary without -r to check for unresolved symbols.
+PURGATORY_LDFLAGS := -e purgatory_start -nostdlib -z nodefaultlib
+LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS)
+LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS)
+targets += purgatory.ro purgatory.chk
+
+# Sanitizer, etc. runtimes are unavailable and cannot be linked here.
+GCOV_PROFILE := n
KASAN_SANITIZE := n
+UBSAN_SANITIZE := n
+KCSAN_SANITIZE := n
KCOV_INSTRUMENT := n
# These are adjustments to the compiler flags used for objects that
@@ -25,7 +33,7 @@ KCOV_INSTRUMENT := n
PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss
-PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN)
+PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
@@ -58,12 +66,15 @@ CFLAGS_string.o += $(PURGATORY_CFLAGS)
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
$(call if_changed,ld)
+$(obj)/purgatory.chk: $(obj)/purgatory.ro FORCE
+ $(call if_changed,ld)
+
targets += kexec-purgatory.c
quiet_cmd_bin2c = BIN2C $@
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
-$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
+$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro $(obj)/purgatory.chk FORCE
$(call if_changed,bin2c)
obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o
diff --git a/arch/x86/realmode/Makefile b/arch/x86/realmode/Makefile
index 682c895753d9..6b1f3a4eeb44 100644
--- a/arch/x86/realmode/Makefile
+++ b/arch/x86/realmode/Makefile
@@ -6,7 +6,10 @@
# for more details.
#
#
+
+# Sanitizer runtimes are unavailable and cannot be linked here.
KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
subdir- := rm
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
index b11ec5d8f8ac..83f1b6a56449 100644
--- a/arch/x86/realmode/rm/Makefile
+++ b/arch/x86/realmode/rm/Makefile
@@ -6,7 +6,10 @@
# for more details.
#
#
+
+# Sanitizer runtimes are unavailable and cannot be linked here.
KASAN_SANITIZE := n
+KCSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.