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-rw-r--r--arch/x86/boot/Makefile1
-rw-r--r--arch/x86/include/asm/vgtod.h6
-rw-r--r--arch/x86/kernel/acpi/boot.c9
-rw-r--r--arch/x86/kernel/cpu/Makefile1
-rw-r--r--arch/x86/kernel/cpu/mkcapflags.sh2
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_ds.c4
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_rapl.c44
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_uncore.h2
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c17
-rw-r--r--arch/x86/kernel/kprobes/core.c20
-rw-r--r--arch/x86/kernel/perf_regs.c90
-rw-r--r--arch/x86/kvm/mmu.c2
-rw-r--r--arch/x86/kvm/vmx.c88
-rw-r--r--arch/x86/lib/insn.c2
-rw-r--r--arch/x86/mm/init.c37
-rw-r--r--arch/x86/um/sys_call_table_32.c2
-rw-r--r--arch/x86/um/sys_call_table_64.c2
-rw-r--r--arch/x86/vdso/vma.c45
-rw-r--r--arch/x86/xen/enlighten.c22
-rw-r--r--arch/x86/xen/p2m.c20
-rw-r--r--arch/x86/xen/setup.c42
-rw-r--r--arch/x86/xen/time.c18
22 files changed, 318 insertions, 158 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 5b016e2498f3..3db07f30636f 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -51,6 +51,7 @@ targets += cpustr.h
$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
$(call if_changed,cpustr)
endif
+clean-files += cpustr.h
# ---------------------------------------------------------------------------
diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h
index e7e9682a33e9..f556c4843aa1 100644
--- a/arch/x86/include/asm/vgtod.h
+++ b/arch/x86/include/asm/vgtod.h
@@ -80,9 +80,11 @@ static inline unsigned int __getcpu(void)
/*
* Load per CPU data from GDT. LSL is faster than RDTSCP and
- * works on all CPUs.
+ * works on all CPUs. This is volatile so that it orders
+ * correctly wrt barrier() and to keep gcc from cleverly
+ * hoisting it out of the calling function.
*/
- asm("lsl %1,%0" : "=r" (p) : "r" (__PER_CPU_SEG));
+ asm volatile ("lsl %1,%0" : "=r" (p) : "r" (__PER_CPU_SEG));
return p;
}
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 4433a4be8171..d1626364a28a 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -750,13 +750,13 @@ static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
}
/* wrapper to silence section mismatch warning */
-int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
+int __ref acpi_map_cpu(acpi_handle handle, int physid, int *pcpu)
{
return _acpi_map_lsapic(handle, physid, pcpu);
}
-EXPORT_SYMBOL(acpi_map_lsapic);
+EXPORT_SYMBOL(acpi_map_cpu);
-int acpi_unmap_lsapic(int cpu)
+int acpi_unmap_cpu(int cpu)
{
#ifdef CONFIG_ACPI_NUMA
set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
@@ -768,8 +768,7 @@ int acpi_unmap_lsapic(int cpu)
return (0);
}
-
-EXPORT_SYMBOL(acpi_unmap_lsapic);
+EXPORT_SYMBOL(acpi_unmap_cpu);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index e27b49d7c922..80091ae54c2b 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -66,3 +66,4 @@ targets += capflags.c
$(obj)/capflags.c: $(cpufeature) $(src)/mkcapflags.sh FORCE
$(call if_changed,mkcapflags)
endif
+clean-files += capflags.c
diff --git a/arch/x86/kernel/cpu/mkcapflags.sh b/arch/x86/kernel/cpu/mkcapflags.sh
index e2b22df964cd..36d99a337b49 100644
--- a/arch/x86/kernel/cpu/mkcapflags.sh
+++ b/arch/x86/kernel/cpu/mkcapflags.sh
@@ -28,7 +28,7 @@ function dump_array()
# If the /* comment */ starts with a quote string, grab that.
VALUE="$(echo "$i" | sed -n 's@.*/\* *\("[^"]*"\).*\*/@\1@p')"
[ -z "$VALUE" ] && VALUE="\"$NAME\""
- [ "$VALUE" == '""' ] && continue
+ [ "$VALUE" = '""' ] && continue
# Name is uppercase, VALUE is all lowercase
VALUE="$(echo "$VALUE" | tr A-Z a-z)"
diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c
index 3c895d480cd7..073983398364 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_ds.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c
@@ -568,8 +568,8 @@ struct event_constraint intel_atom_pebs_event_constraints[] = {
};
struct event_constraint intel_slm_pebs_event_constraints[] = {
- /* UOPS_RETIRED.ALL, inv=1, cmask=16 (cycles:p). */
- INTEL_FLAGS_EVENT_CONSTRAINT(0x108001c2, 0xf),
+ /* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
+ INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x1),
/* Allow all events as PEBS with no flags */
INTEL_ALL_EVENT_CONSTRAINT(0, 0x1),
EVENT_CONSTRAINT_END
diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
index 673f930c700f..6e434f8e5fc8 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
@@ -103,6 +103,13 @@ static struct kobj_attribute format_attr_##_var = \
#define RAPL_CNTR_WIDTH 32 /* 32-bit rapl counters */
+#define RAPL_EVENT_ATTR_STR(_name, v, str) \
+static struct perf_pmu_events_attr event_attr_##v = { \
+ .attr = __ATTR(_name, 0444, rapl_sysfs_show, NULL), \
+ .id = 0, \
+ .event_str = str, \
+};
+
struct rapl_pmu {
spinlock_t lock;
int hw_unit; /* 1/2^hw_unit Joule */
@@ -379,23 +386,36 @@ static struct attribute_group rapl_pmu_attr_group = {
.attrs = rapl_pmu_attrs,
};
-EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
-EVENT_ATTR_STR(energy-pkg , rapl_pkg, "event=0x02");
-EVENT_ATTR_STR(energy-ram , rapl_ram, "event=0x03");
-EVENT_ATTR_STR(energy-gpu , rapl_gpu, "event=0x04");
+static ssize_t rapl_sysfs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *page)
+{
+ struct perf_pmu_events_attr *pmu_attr = \
+ container_of(attr, struct perf_pmu_events_attr, attr);
+
+ if (pmu_attr->event_str)
+ return sprintf(page, "%s", pmu_attr->event_str);
+
+ return 0;
+}
+
+RAPL_EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
+RAPL_EVENT_ATTR_STR(energy-pkg , rapl_pkg, "event=0x02");
+RAPL_EVENT_ATTR_STR(energy-ram , rapl_ram, "event=0x03");
+RAPL_EVENT_ATTR_STR(energy-gpu , rapl_gpu, "event=0x04");
-EVENT_ATTR_STR(energy-cores.unit, rapl_cores_unit, "Joules");
-EVENT_ATTR_STR(energy-pkg.unit , rapl_pkg_unit, "Joules");
-EVENT_ATTR_STR(energy-ram.unit , rapl_ram_unit, "Joules");
-EVENT_ATTR_STR(energy-gpu.unit , rapl_gpu_unit, "Joules");
+RAPL_EVENT_ATTR_STR(energy-cores.unit, rapl_cores_unit, "Joules");
+RAPL_EVENT_ATTR_STR(energy-pkg.unit , rapl_pkg_unit, "Joules");
+RAPL_EVENT_ATTR_STR(energy-ram.unit , rapl_ram_unit, "Joules");
+RAPL_EVENT_ATTR_STR(energy-gpu.unit , rapl_gpu_unit, "Joules");
/*
* we compute in 0.23 nJ increments regardless of MSR
*/
-EVENT_ATTR_STR(energy-cores.scale, rapl_cores_scale, "2.3283064365386962890625e-10");
-EVENT_ATTR_STR(energy-pkg.scale, rapl_pkg_scale, "2.3283064365386962890625e-10");
-EVENT_ATTR_STR(energy-ram.scale, rapl_ram_scale, "2.3283064365386962890625e-10");
-EVENT_ATTR_STR(energy-gpu.scale, rapl_gpu_scale, "2.3283064365386962890625e-10");
+RAPL_EVENT_ATTR_STR(energy-cores.scale, rapl_cores_scale, "2.3283064365386962890625e-10");
+RAPL_EVENT_ATTR_STR(energy-pkg.scale, rapl_pkg_scale, "2.3283064365386962890625e-10");
+RAPL_EVENT_ATTR_STR(energy-ram.scale, rapl_ram_scale, "2.3283064365386962890625e-10");
+RAPL_EVENT_ATTR_STR(energy-gpu.scale, rapl_gpu_scale, "2.3283064365386962890625e-10");
static struct attribute *rapl_events_srv_attr[] = {
EVENT_PTR(rapl_cores),
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.h b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
index 18eb78bbdd10..863d9b02563e 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.h
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
@@ -17,7 +17,7 @@
#define UNCORE_PCI_DEV_TYPE(data) ((data >> 8) & 0xff)
#define UNCORE_PCI_DEV_IDX(data) (data & 0xff)
#define UNCORE_EXTRA_PCI_DEV 0xff
-#define UNCORE_EXTRA_PCI_DEV_MAX 2
+#define UNCORE_EXTRA_PCI_DEV_MAX 3
/* support up to 8 sockets */
#define UNCORE_SOCKET_MAX 8
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
index 745b158e9a65..21af6149edf2 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
@@ -891,6 +891,7 @@ void snbep_uncore_cpu_init(void)
enum {
SNBEP_PCI_QPI_PORT0_FILTER,
SNBEP_PCI_QPI_PORT1_FILTER,
+ HSWEP_PCI_PCU_3,
};
static int snbep_qpi_hw_config(struct intel_uncore_box *box, struct perf_event *event)
@@ -2026,6 +2027,17 @@ void hswep_uncore_cpu_init(void)
{
if (hswep_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores)
hswep_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
+
+ /* Detect 6-8 core systems with only two SBOXes */
+ if (uncore_extra_pci_dev[0][HSWEP_PCI_PCU_3]) {
+ u32 capid4;
+
+ pci_read_config_dword(uncore_extra_pci_dev[0][HSWEP_PCI_PCU_3],
+ 0x94, &capid4);
+ if (((capid4 >> 6) & 0x3) == 0)
+ hswep_uncore_sbox.num_boxes = 2;
+ }
+
uncore_msr_uncores = hswep_msr_uncores;
}
@@ -2287,6 +2299,11 @@ static DEFINE_PCI_DEVICE_TABLE(hswep_uncore_pci_ids) = {
.driver_data = UNCORE_PCI_DEV_DATA(UNCORE_EXTRA_PCI_DEV,
SNBEP_PCI_QPI_PORT1_FILTER),
},
+ { /* PCU.3 (for Capability registers) */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2fc0),
+ .driver_data = UNCORE_PCI_DEV_DATA(UNCORE_EXTRA_PCI_DEV,
+ HSWEP_PCI_PCU_3),
+ },
{ /* end: all zeroes */ }
};
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index f7e3cd50ece0..98f654d466e5 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -1020,6 +1020,15 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
regs->flags &= ~X86_EFLAGS_IF;
trace_hardirqs_off();
regs->ip = (unsigned long)(jp->entry);
+
+ /*
+ * jprobes use jprobe_return() which skips the normal return
+ * path of the function, and this messes up the accounting of the
+ * function graph tracer to get messed up.
+ *
+ * Pause function graph tracing while performing the jprobe function.
+ */
+ pause_graph_tracing();
return 1;
}
NOKPROBE_SYMBOL(setjmp_pre_handler);
@@ -1048,24 +1057,25 @@ int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
u8 *addr = (u8 *) (regs->ip - 1);
struct jprobe *jp = container_of(p, struct jprobe, kp);
+ void *saved_sp = kcb->jprobe_saved_sp;
if ((addr > (u8 *) jprobe_return) &&
(addr < (u8 *) jprobe_return_end)) {
- if (stack_addr(regs) != kcb->jprobe_saved_sp) {
+ if (stack_addr(regs) != saved_sp) {
struct pt_regs *saved_regs = &kcb->jprobe_saved_regs;
printk(KERN_ERR
"current sp %p does not match saved sp %p\n",
- stack_addr(regs), kcb->jprobe_saved_sp);
+ stack_addr(regs), saved_sp);
printk(KERN_ERR "Saved registers for jprobe %p\n", jp);
show_regs(saved_regs);
printk(KERN_ERR "Current registers\n");
show_regs(regs);
BUG();
}
+ /* It's OK to start function graph tracing again */
+ unpause_graph_tracing();
*regs = kcb->jprobe_saved_regs;
- memcpy((kprobe_opcode_t *)(kcb->jprobe_saved_sp),
- kcb->jprobes_stack,
- MIN_STACK_SIZE(kcb->jprobe_saved_sp));
+ memcpy(saved_sp, kcb->jprobes_stack, MIN_STACK_SIZE(saved_sp));
preempt_enable_no_resched();
return 1;
}
diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c
index e309cc5c276e..781861cc5ee8 100644
--- a/arch/x86/kernel/perf_regs.c
+++ b/arch/x86/kernel/perf_regs.c
@@ -78,6 +78,14 @@ u64 perf_reg_abi(struct task_struct *task)
{
return PERF_SAMPLE_REGS_ABI_32;
}
+
+void perf_get_regs_user(struct perf_regs *regs_user,
+ struct pt_regs *regs,
+ struct pt_regs *regs_user_copy)
+{
+ regs_user->regs = task_pt_regs(current);
+ regs_user->abi = perf_reg_abi(current);
+}
#else /* CONFIG_X86_64 */
#define REG_NOSUPPORT ((1ULL << PERF_REG_X86_DS) | \
(1ULL << PERF_REG_X86_ES) | \
@@ -102,4 +110,86 @@ u64 perf_reg_abi(struct task_struct *task)
else
return PERF_SAMPLE_REGS_ABI_64;
}
+
+void perf_get_regs_user(struct perf_regs *regs_user,
+ struct pt_regs *regs,
+ struct pt_regs *regs_user_copy)
+{
+ struct pt_regs *user_regs = task_pt_regs(current);
+
+ /*
+ * If we're in an NMI that interrupted task_pt_regs setup, then
+ * we can't sample user regs at all. This check isn't really
+ * sufficient, though, as we could be in an NMI inside an interrupt
+ * that happened during task_pt_regs setup.
+ */
+ if (regs->sp > (unsigned long)&user_regs->r11 &&
+ regs->sp <= (unsigned long)(user_regs + 1)) {
+ regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE;
+ regs_user->regs = NULL;
+ return;
+ }
+
+ /*
+ * RIP, flags, and the argument registers are usually saved.
+ * orig_ax is probably okay, too.
+ */
+ regs_user_copy->ip = user_regs->ip;
+ regs_user_copy->cx = user_regs->cx;
+ regs_user_copy->dx = user_regs->dx;
+ regs_user_copy->si = user_regs->si;
+ regs_user_copy->di = user_regs->di;
+ regs_user_copy->r8 = user_regs->r8;
+ regs_user_copy->r9 = user_regs->r9;
+ regs_user_copy->r10 = user_regs->r10;
+ regs_user_copy->r11 = user_regs->r11;
+ regs_user_copy->orig_ax = user_regs->orig_ax;
+ regs_user_copy->flags = user_regs->flags;
+
+ /*
+ * Don't even try to report the "rest" regs.
+ */
+ regs_user_copy->bx = -1;
+ regs_user_copy->bp = -1;
+ regs_user_copy->r12 = -1;
+ regs_user_copy->r13 = -1;
+ regs_user_copy->r14 = -1;
+ regs_user_copy->r15 = -1;
+
+ /*
+ * For this to be at all useful, we need a reasonable guess for
+ * sp and the ABI. Be careful: we're in NMI context, and we're
+ * considering current to be the current task, so we should
+ * be careful not to look at any other percpu variables that might
+ * change during context switches.
+ */
+ if (IS_ENABLED(CONFIG_IA32_EMULATION) &&
+ task_thread_info(current)->status & TS_COMPAT) {
+ /* Easy case: we're in a compat syscall. */
+ regs_user->abi = PERF_SAMPLE_REGS_ABI_32;
+ regs_user_copy->sp = user_regs->sp;
+ regs_user_copy->cs = user_regs->cs;
+ regs_user_copy->ss = user_regs->ss;
+ } else if (user_regs->orig_ax != -1) {
+ /*
+ * We're probably in a 64-bit syscall.
+ * Warning: this code is severely racy. At least it's better
+ * than just blindly copying user_regs.
+ */
+ regs_user->abi = PERF_SAMPLE_REGS_ABI_64;
+ regs_user_copy->sp = this_cpu_read(old_rsp);
+ regs_user_copy->cs = __USER_CS;
+ regs_user_copy->ss = __USER_DS;
+ regs_user_copy->cx = -1; /* usually contains garbage */
+ } else {
+ /* We're probably in an interrupt or exception. */
+ regs_user->abi = user_64bit_mode(user_regs) ?
+ PERF_SAMPLE_REGS_ABI_64 : PERF_SAMPLE_REGS_ABI_32;
+ regs_user_copy->sp = user_regs->sp;
+ regs_user_copy->cs = user_regs->cs;
+ regs_user_copy->ss = user_regs->ss;
+ }
+
+ regs_user->regs = regs_user_copy;
+}
#endif /* CONFIG_X86_32 */
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 10fbed126b11..f83fc6c5e0ba 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4448,7 +4448,7 @@ void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm)
* zap all shadow pages.
*/
if (unlikely(kvm_current_mmio_generation(kvm) == 0)) {
- printk_ratelimited(KERN_INFO "kvm: zapping shadow pages for mmio generation wraparound\n");
+ printk_ratelimited(KERN_DEBUG "kvm: zapping shadow pages for mmio generation wraparound\n");
kvm_mmu_invalidate_zap_all_pages(kvm);
}
}
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index feb852b04598..d4c58d884838 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5840,53 +5840,10 @@ static __init int hardware_setup(void)
memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE);
memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE);
- vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
- vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
- vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
- vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
- vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
-
- memcpy(vmx_msr_bitmap_legacy_x2apic,
- vmx_msr_bitmap_legacy, PAGE_SIZE);
- memcpy(vmx_msr_bitmap_longmode_x2apic,
- vmx_msr_bitmap_longmode, PAGE_SIZE);
-
- if (enable_apicv) {
- for (msr = 0x800; msr <= 0x8ff; msr++)
- vmx_disable_intercept_msr_read_x2apic(msr);
-
- /* According SDM, in x2apic mode, the whole id reg is used.
- * But in KVM, it only use the highest eight bits. Need to
- * intercept it */
- vmx_enable_intercept_msr_read_x2apic(0x802);
- /* TMCCT */
- vmx_enable_intercept_msr_read_x2apic(0x839);
- /* TPR */
- vmx_disable_intercept_msr_write_x2apic(0x808);
- /* EOI */
- vmx_disable_intercept_msr_write_x2apic(0x80b);
- /* SELF-IPI */
- vmx_disable_intercept_msr_write_x2apic(0x83f);
- }
-
- if (enable_ept) {
- kvm_mmu_set_mask_ptes(0ull,
- (enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
- (enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
- 0ull, VMX_EPT_EXECUTABLE_MASK);
- ept_set_mmio_spte_mask();
- kvm_enable_tdp();
- } else
- kvm_disable_tdp();
-
- update_ple_window_actual_max();
-
if (setup_vmcs_config(&vmcs_config) < 0) {
r = -EIO;
goto out7;
- }
+ }
if (boot_cpu_has(X86_FEATURE_NX))
kvm_enable_efer_bits(EFER_NX);
@@ -5945,6 +5902,49 @@ static __init int hardware_setup(void)
if (nested)
nested_vmx_setup_ctls_msrs();
+ vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
+ vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
+ vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
+ vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
+
+ memcpy(vmx_msr_bitmap_legacy_x2apic,
+ vmx_msr_bitmap_legacy, PAGE_SIZE);
+ memcpy(vmx_msr_bitmap_longmode_x2apic,
+ vmx_msr_bitmap_longmode, PAGE_SIZE);
+
+ if (enable_apicv) {
+ for (msr = 0x800; msr <= 0x8ff; msr++)
+ vmx_disable_intercept_msr_read_x2apic(msr);
+
+ /* According SDM, in x2apic mode, the whole id reg is used.
+ * But in KVM, it only use the highest eight bits. Need to
+ * intercept it */
+ vmx_enable_intercept_msr_read_x2apic(0x802);
+ /* TMCCT */
+ vmx_enable_intercept_msr_read_x2apic(0x839);
+ /* TPR */
+ vmx_disable_intercept_msr_write_x2apic(0x808);
+ /* EOI */
+ vmx_disable_intercept_msr_write_x2apic(0x80b);
+ /* SELF-IPI */
+ vmx_disable_intercept_msr_write_x2apic(0x83f);
+ }
+
+ if (enable_ept) {
+ kvm_mmu_set_mask_ptes(0ull,
+ (enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
+ (enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
+ 0ull, VMX_EPT_EXECUTABLE_MASK);
+ ept_set_mmio_spte_mask();
+ kvm_enable_tdp();
+ } else
+ kvm_disable_tdp();
+
+ update_ple_window_actual_max();
+
return alloc_kvm_area();
out7:
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
index 2480978b31cc..1313ae6b478b 100644
--- a/arch/x86/lib/insn.c
+++ b/arch/x86/lib/insn.c
@@ -28,7 +28,7 @@
/* Verify next sizeof(t) bytes can be on the same instruction */
#define validate_next(t, insn, n) \
- ((insn)->next_byte + sizeof(t) + n < (insn)->end_kaddr)
+ ((insn)->next_byte + sizeof(t) + n <= (insn)->end_kaddr)
#define __get_next(t, insn) \
({ t r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); r; })
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index a97ee0801475..08a7d313538a 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -438,20 +438,20 @@ static unsigned long __init init_range_memory_mapping(
static unsigned long __init get_new_step_size(unsigned long step_size)
{
/*
- * Explain why we shift by 5 and why we don't have to worry about
- * 'step_size << 5' overflowing:
- *
- * initial mapped size is PMD_SIZE (2M).
+ * Initial mapped size is PMD_SIZE (2M).
* We can not set step_size to be PUD_SIZE (1G) yet.
* In worse case, when we cross the 1G boundary, and
* PG_LEVEL_2M is not set, we will need 1+1+512 pages (2M + 8k)
- * to map 1G range with PTE. Use 5 as shift for now.
+ * to map 1G range with PTE. Hence we use one less than the
+ * difference of page table level shifts.
*
- * Don't need to worry about overflow, on 32bit, when step_size
- * is 0, round_down() returns 0 for start, and that turns it
- * into 0x100000000ULL.
+ * Don't need to worry about overflow in the top-down case, on 32bit,
+ * when step_size is 0, round_down() returns 0 for start, and that
+ * turns it into 0x100000000ULL.
+ * In the bottom-up case, round_up(x, 0) returns 0 though too, which
+ * needs to be taken into consideration by the code below.
*/
- return step_size << 5;
+ return step_size << (PMD_SHIFT - PAGE_SHIFT - 1);
}
/**
@@ -471,7 +471,6 @@ static void __init memory_map_top_down(unsigned long map_start,
unsigned long step_size;
unsigned long addr;
unsigned long mapped_ram_size = 0;
- unsigned long new_mapped_ram_size;
/* xen has big range in reserved near end of ram, skip it at first.*/
addr = memblock_find_in_range(map_start, map_end, PMD_SIZE, PMD_SIZE);
@@ -496,14 +495,12 @@ static void __init memory_map_top_down(unsigned long map_start,
start = map_start;
} else
start = map_start;
- new_mapped_ram_size = init_range_memory_mapping(start,
+ mapped_ram_size += init_range_memory_mapping(start,
last_start);
last_start = start;
min_pfn_mapped = last_start >> PAGE_SHIFT;
- /* only increase step_size after big range get mapped */
- if (new_mapped_ram_size > mapped_ram_size)
+ if (mapped_ram_size >= step_size)
step_size = get_new_step_size(step_size);
- mapped_ram_size += new_mapped_ram_size;
}
if (real_end < map_end)
@@ -524,7 +521,7 @@ static void __init memory_map_top_down(unsigned long map_start,
static void __init memory_map_bottom_up(unsigned long map_start,
unsigned long map_end)
{
- unsigned long next, new_mapped_ram_size, start;
+ unsigned long next, start;
unsigned long mapped_ram_size = 0;
/* step_size need to be small so pgt_buf from BRK could cover it */
unsigned long step_size = PMD_SIZE;
@@ -539,19 +536,19 @@ static void __init memory_map_bottom_up(unsigned long map_start,
* for page table.
*/
while (start < map_end) {
- if (map_end - start > step_size) {
+ if (step_size && map_end - start > step_size) {
next = round_up(start + 1, step_size);
if (next > map_end)
next = map_end;
- } else
+ } else {
next = map_end;
+ }
- new_mapped_ram_size = init_range_memory_mapping(start, next);
+ mapped_ram_size += init_range_memory_mapping(start, next);
start = next;
- if (new_mapped_ram_size > mapped_ram_size)
+ if (mapped_ram_size >= step_size)
step_size = get_new_step_size(step_size);
- mapped_ram_size += new_mapped_ram_size;
}
}
diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c
index 531d4269e2e3..bd16d6c370ec 100644
--- a/arch/x86/um/sys_call_table_32.c
+++ b/arch/x86/um/sys_call_table_32.c
@@ -34,7 +34,7 @@ typedef asmlinkage void (*sys_call_ptr_t)(void);
extern asmlinkage void sys_ni_syscall(void);
-const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
+const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
/*
* Smells like a compiler bug -- it doesn't work
* when the & below is removed.
diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c
index 20c3649d0691..5cdfa9db2217 100644
--- a/arch/x86/um/sys_call_table_64.c
+++ b/arch/x86/um/sys_call_table_64.c
@@ -47,7 +47,7 @@ typedef void (*sys_call_ptr_t)(void);
extern void sys_ni_syscall(void);
-const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
+const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
/*
* Smells like a compiler bug -- it doesn't work
* when the & below is removed.
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index 009495b9ab4b..1c9f750c3859 100644
--- a/arch/x86/vdso/vma.c
+++ b/arch/x86/vdso/vma.c
@@ -41,12 +41,17 @@ void __init init_vdso_image(const struct vdso_image *image)
struct linux_binprm;
-/* Put the vdso above the (randomized) stack with another randomized offset.
- This way there is no hole in the middle of address space.
- To save memory make sure it is still in the same PTE as the stack top.
- This doesn't give that many random bits.
-
- Only used for the 64-bit and x32 vdsos. */
+/*
+ * Put the vdso above the (randomized) stack with another randomized
+ * offset. This way there is no hole in the middle of address space.
+ * To save memory make sure it is still in the same PTE as the stack
+ * top. This doesn't give that many random bits.
+ *
+ * Note that this algorithm is imperfect: the distribution of the vdso
+ * start address within a PMD is biased toward the end.
+ *
+ * Only used for the 64-bit and x32 vdsos.
+ */
static unsigned long vdso_addr(unsigned long start, unsigned len)
{
#ifdef CONFIG_X86_32
@@ -54,22 +59,30 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
#else
unsigned long addr, end;
unsigned offset;
- end = (start + PMD_SIZE - 1) & PMD_MASK;
+
+ /*
+ * Round up the start address. It can start out unaligned as a result
+ * of stack start randomization.
+ */
+ start = PAGE_ALIGN(start);
+
+ /* Round the lowest possible end address up to a PMD boundary. */
+ end = (start + len + PMD_SIZE - 1) & PMD_MASK;
if (end >= TASK_SIZE_MAX)
end = TASK_SIZE_MAX;
end -= len;
- /* This loses some more bits than a modulo, but is cheaper */
- offset = get_random_int() & (PTRS_PER_PTE - 1);
- addr = start + (offset << PAGE_SHIFT);
- if (addr >= end)
- addr = end;
+
+ if (end > start) {
+ offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
+ addr = start + (offset << PAGE_SHIFT);
+ } else {
+ addr = start;
+ }
/*
- * page-align it here so that get_unmapped_area doesn't
- * align it wrongfully again to the next page. addr can come in 4K
- * unaligned here as a result of stack start randomization.
+ * Forcibly align the final address in case we have a hardware
+ * issue that requires alignment for performance reasons.
*/
- addr = PAGE_ALIGN(addr);
addr = align_vdso_addr(addr);
return addr;
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 6bf3a13e3e0f..78a881b7fc41 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -40,6 +40,7 @@
#include <xen/interface/physdev.h>
#include <xen/interface/vcpu.h>
#include <xen/interface/memory.h>
+#include <xen/interface/nmi.h>
#include <xen/interface/xen-mca.h>
#include <xen/features.h>
#include <xen/page.h>
@@ -66,6 +67,7 @@
#include <asm/reboot.h>
#include <asm/stackprotector.h>
#include <asm/hypervisor.h>
+#include <asm/mach_traps.h>
#include <asm/mwait.h>
#include <asm/pci_x86.h>
#include <asm/pat.h>
@@ -1351,6 +1353,21 @@ static const struct machine_ops xen_machine_ops __initconst = {
.emergency_restart = xen_emergency_restart,
};
+static unsigned char xen_get_nmi_reason(void)
+{
+ unsigned char reason = 0;
+
+ /* Construct a value which looks like it came from port 0x61. */
+ if (test_bit(_XEN_NMIREASON_io_error,
+ &HYPERVISOR_shared_info->arch.nmi_reason))
+ reason |= NMI_REASON_IOCHK;
+ if (test_bit(_XEN_NMIREASON_pci_serr,
+ &HYPERVISOR_shared_info->arch.nmi_reason))
+ reason |= NMI_REASON_SERR;
+
+ return reason;
+}
+
static void __init xen_boot_params_init_edd(void)
{
#if IS_ENABLED(CONFIG_EDD)
@@ -1535,9 +1552,12 @@ asmlinkage __visible void __init xen_start_kernel(void)
pv_info = xen_info;
pv_init_ops = xen_init_ops;
pv_apic_ops = xen_apic_ops;
- if (!xen_pvh_domain())
+ if (!xen_pvh_domain()) {
pv_cpu_ops = xen_cpu_ops;
+ x86_platform.get_nmi_reason = xen_get_nmi_reason;
+ }
+
if (xen_feature(XENFEAT_auto_translated_physmap))
x86_init.resources.memory_setup = xen_auto_xlated_memory_setup;
else
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index edbc7a63fd73..70fb5075c901 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -167,10 +167,13 @@ static void * __ref alloc_p2m_page(void)
return (void *)__get_free_page(GFP_KERNEL | __GFP_REPEAT);
}
-/* Only to be called in case of a race for a page just allocated! */
-static void free_p2m_page(void *p)
+static void __ref free_p2m_page(void *p)
{
- BUG_ON(!slab_is_available());
+ if (unlikely(!slab_is_available())) {
+ free_bootmem((unsigned long)p, PAGE_SIZE);
+ return;
+ }
+
free_page((unsigned long)p);
}
@@ -375,7 +378,7 @@ static void __init xen_rebuild_p2m_list(unsigned long *p2m)
p2m_missing_pte : p2m_identity_pte;
for (i = 0; i < PMDS_PER_MID_PAGE; i++) {
pmdp = populate_extra_pmd(
- (unsigned long)(p2m + pfn + i * PTRS_PER_PTE));
+ (unsigned long)(p2m + pfn) + i * PMD_SIZE);
set_pmd(pmdp, __pmd(__pa(ptep) | _KERNPG_TABLE));
}
}
@@ -436,10 +439,9 @@ EXPORT_SYMBOL_GPL(get_phys_to_machine);
* a new pmd is to replace p2m_missing_pte or p2m_identity_pte by a individual
* pmd. In case of PAE/x86-32 there are multiple pmds to allocate!
*/
-static pte_t *alloc_p2m_pmd(unsigned long addr, pte_t *ptep, pte_t *pte_pg)
+static pte_t *alloc_p2m_pmd(unsigned long addr, pte_t *pte_pg)
{
pte_t *ptechk;
- pte_t *pteret = ptep;
pte_t *pte_newpg[PMDS_PER_MID_PAGE];
pmd_t *pmdp;
unsigned int level;
@@ -473,8 +475,6 @@ static pte_t *alloc_p2m_pmd(unsigned long addr, pte_t *ptep, pte_t *pte_pg)
if (ptechk == pte_pg) {
set_pmd(pmdp,
__pmd(__pa(pte_newpg[i]) | _KERNPG_TABLE));
- if (vaddr == (addr & ~(PMD_SIZE - 1)))
- pteret = pte_offset_kernel(pmdp, addr);
pte_newpg[i] = NULL;
}
@@ -488,7 +488,7 @@ static pte_t *alloc_p2m_pmd(unsigned long addr, pte_t *ptep, pte_t *pte_pg)
vaddr += PMD_SIZE;
}
- return pteret;
+ return lookup_address(addr, &level);
}
/*
@@ -517,7 +517,7 @@ static bool alloc_p2m(unsigned long pfn)
if (pte_pg == p2m_missing_pte || pte_pg == p2m_identity_pte) {
/* PMD level is missing, allocate a new one */
- ptep = alloc_p2m_pmd(addr, ptep, pte_pg);
+ ptep = alloc_p2m_pmd(addr, pte_pg);
if (!ptep)
return false;
}
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index dfd77dec8e2b..865e56cea7a0 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -140,7 +140,7 @@ static void __init xen_del_extra_mem(u64 start, u64 size)
unsigned long __ref xen_chk_extra_mem(unsigned long pfn)
{
int i;
- unsigned long addr = PFN_PHYS(pfn);
+ phys_addr_t addr = PFN_PHYS(pfn);
for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) {
if (addr >= xen_extra_mem[i].start &&
@@ -160,6 +160,8 @@ void __init xen_inv_extra_mem(void)
int i;
for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) {
+ if (!xen_extra_mem[i].size)
+ continue;
pfn_s = PFN_DOWN(xen_extra_mem[i].start);
pfn_e = PFN_UP(xen_extra_mem[i].start + xen_extra_mem[i].size);
for (pfn = pfn_s; pfn < pfn_e; pfn++)
@@ -229,15 +231,14 @@ static int __init xen_free_mfn(unsigned long mfn)
* as a fallback if the remapping fails.
*/
static void __init xen_set_identity_and_release_chunk(unsigned long start_pfn,
- unsigned long end_pfn, unsigned long nr_pages, unsigned long *identity,
- unsigned long *released)
+ unsigned long end_pfn, unsigned long nr_pages, unsigned long *released)
{
- unsigned long len = 0;
unsigned long pfn, end;
int ret;
WARN_ON(start_pfn > end_pfn);
+ /* Release pages first. */
end = min(end_pfn, nr_pages);
for (pfn = start_pfn; pfn < end; pfn++) {
unsigned long mfn = pfn_to_mfn(pfn);
@@ -250,16 +251,14 @@ static void __init xen_set_identity_and_release_chunk(unsigned long start_pfn,
WARN(ret != 1, "Failed to release pfn %lx err=%d\n", pfn, ret);
if (ret == 1) {
+ (*released)++;
if (!__set_phys_to_machine(pfn, INVALID_P2M_ENTRY))
break;
- len++;
} else
break;
}
- /* Need to release pages first */
- *released += len;
- *identity += set_phys_range_identity(start_pfn, end_pfn);
+ set_phys_range_identity(start_pfn, end_pfn);
}
/*
@@ -287,7 +286,7 @@ static void __init xen_update_mem_tables(unsigned long pfn, unsigned long mfn)
}
/* Update kernel mapping, but not for highmem. */
- if ((pfn << PAGE_SHIFT) >= __pa(high_memory))
+ if (pfn >= PFN_UP(__pa(high_memory - 1)))
return;
if (HYPERVISOR_update_va_mapping((unsigned long)__va(pfn << PAGE_SHIFT),
@@ -318,7 +317,6 @@ static void __init xen_do_set_identity_and_remap_chunk(
unsigned long ident_pfn_iter, remap_pfn_iter;
unsigned long ident_end_pfn = start_pfn + size;
unsigned long left = size;
- unsigned long ident_cnt = 0;
unsigned int i, chunk;
WARN_ON(size == 0);
@@ -347,8 +345,7 @@ static void __init xen_do_set_identity_and_remap_chunk(
xen_remap_mfn = mfn;
/* Set identity map */
- ident_cnt += set_phys_range_identity(ident_pfn_iter,
- ident_pfn_iter + chunk);
+ set_phys_range_identity(ident_pfn_iter, ident_pfn_iter + chunk);
left -= chunk;
}
@@ -371,7 +368,7 @@ static void __init xen_do_set_identity_and_remap_chunk(
static unsigned long __init xen_set_identity_and_remap_chunk(
const struct e820entry *list, size_t map_size, unsigned long start_pfn,
unsigned long end_pfn, unsigned long nr_pages, unsigned long remap_pfn,
- unsigned long *identity, unsigned long *released)
+ unsigned long *released, unsigned long *remapped)
{
unsigned long pfn;
unsigned long i = 0;
@@ -386,8 +383,7 @@ static unsigned long __init xen_set_identity_and_remap_chunk(
/* Do not remap pages beyond the current allocation */
if (cur_pfn >= nr_pages) {
/* Identity map remaining pages */
- *identity += set_phys_range_identity(cur_pfn,
- cur_pfn + size);
+ set_phys_range_identity(cur_pfn, cur_pfn + size);
break;
}
if (cur_pfn + size > nr_pages)
@@ -398,7 +394,7 @@ static unsigned long __init xen_set_identity_and_remap_chunk(
if (!remap_range_size) {
pr_warning("Unable to find available pfn range, not remapping identity pages\n");
xen_set_identity_and_release_chunk(cur_pfn,
- cur_pfn + left, nr_pages, identity, released);
+ cur_pfn + left, nr_pages, released);
break;
}
/* Adjust size to fit in current e820 RAM region */
@@ -410,7 +406,7 @@ static unsigned long __init xen_set_identity_and_remap_chunk(
/* Update variables to reflect new mappings. */
i += size;
remap_pfn += size;
- *identity += size;
+ *remapped += size;
}
/*
@@ -427,13 +423,13 @@ static unsigned long __init xen_set_identity_and_remap_chunk(
static void __init xen_set_identity_and_remap(
const struct e820entry *list, size_t map_size, unsigned long nr_pages,
- unsigned long *released)
+ unsigned long *released, unsigned long *remapped)
{
phys_addr_t start = 0;
- unsigned long identity = 0;
unsigned long last_pfn = nr_pages;
const struct e820entry *entry;
unsigned long num_released = 0;
+ unsigned long num_remapped = 0;
int i;
/*
@@ -460,14 +456,14 @@ static void __init xen_set_identity_and_remap(
last_pfn = xen_set_identity_and_remap_chunk(
list, map_size, start_pfn,
end_pfn, nr_pages, last_pfn,
- &identity, &num_released);
+ &num_released, &num_remapped);
start = end;
}
}
*released = num_released;
+ *remapped = num_remapped;
- pr_info("Set %ld page(s) to 1-1 mapping\n", identity);
pr_info("Released %ld page(s)\n", num_released);
}
@@ -586,6 +582,7 @@ char * __init xen_memory_setup(void)
struct xen_memory_map memmap;
unsigned long max_pages;
unsigned long extra_pages = 0;
+ unsigned long remapped_pages;
int i;
int op;
@@ -635,9 +632,10 @@ char * __init xen_memory_setup(void)
* underlying RAM.
*/
xen_set_identity_and_remap(map, memmap.nr_entries, max_pfn,
- &xen_released_pages);
+ &xen_released_pages, &remapped_pages);
extra_pages += xen_released_pages;
+ extra_pages += remapped_pages;
/*
* Clamp the amount of extra memory to a EXTRA_MEM_RATIO
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index f473d268d387..69087341d9ae 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -391,7 +391,7 @@ static const struct clock_event_device *xen_clockevent =
struct xen_clock_event_device {
struct clock_event_device evt;
- char *name;
+ char name[16];
};
static DEFINE_PER_CPU(struct xen_clock_event_device, xen_clock_events) = { .evt.irq = -1 };
@@ -420,46 +420,38 @@ void xen_teardown_timer(int cpu)
if (evt->irq >= 0) {
unbind_from_irqhandler(evt->irq, NULL);
evt->irq = -1;
- kfree(per_cpu(xen_clock_events, cpu).name);
- per_cpu(xen_clock_events, cpu).name = NULL;
}
}
void xen_setup_timer(int cpu)
{
- char *name;
- struct clock_event_device *evt;
+ struct xen_clock_event_device *xevt = &per_cpu(xen_clock_events, cpu);
+ struct clock_event_device *evt = &xevt->evt;
int irq;
- evt = &per_cpu(xen_clock_events, cpu).evt;
WARN(evt->irq >= 0, "IRQ%d for CPU%d is already allocated\n", evt->irq, cpu);
if (evt->irq >= 0)
xen_teardown_timer(cpu);
printk(KERN_INFO "installing Xen timer for CPU %d\n", cpu);
- name = kasprintf(GFP_KERNEL, "timer%d", cpu);
- if (!name)
- name = "<timer kasprintf failed>";
+ snprintf(xevt->name, sizeof(xevt->name), "timer%d", cpu);
irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt,
IRQF_PERCPU|IRQF_NOBALANCING|IRQF_TIMER|
IRQF_FORCE_RESUME|IRQF_EARLY_RESUME,
- name, NULL);
+ xevt->name, NULL);
(void)xen_set_irq_priority(irq, XEN_IRQ_PRIORITY_MAX);
memcpy(evt, xen_clockevent, sizeof(*evt));
evt->cpumask = cpumask_of(cpu);
evt->irq = irq;
- per_cpu(xen_clock_events, cpu).name = name;
}
void xen_setup_cpu_clockevents(void)
{
- BUG_ON(preemptible());
-
clockevents_register_device(this_cpu_ptr(&xen_clock_events.evt));
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-01 05:45:06 +0300