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-rw-r--r--arch/s390/Kconfig14
-rw-r--r--arch/s390/hypfs/inode.c2
-rw-r--r--arch/s390/include/asm/kvm.h5
-rw-r--r--arch/s390/include/asm/kvm_host.h1
-rw-r--r--arch/s390/include/asm/kvm_para.h5
-rw-r--r--arch/s390/include/asm/sclp.h1
-rw-r--r--arch/s390/kvm/diag.c29
-rw-r--r--arch/s390/kvm/intercept.c1
-rw-r--r--arch/s390/kvm/kvm-s390.c87
-rw-r--r--arch/s390/kvm/kvm-s390.h1
-rw-r--r--arch/s390/kvm/priv.c31
11 files changed, 162 insertions, 15 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index e16390c0bca8..b403c533432c 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -28,12 +28,6 @@ config ARCH_HAS_ILOG2_U64
config GENERIC_HWEIGHT
def_bool y
-config GENERIC_TIME_VSYSCALL
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config GENERIC_BUG
def_bool y if BUG
@@ -123,6 +117,9 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_TIME_VSYSCALL
+ select GENERIC_CLOCKEVENTS
+ select KTIME_SCALAR if 32BIT
config SCHED_OMIT_FRAME_POINTER
def_bool y
@@ -135,8 +132,6 @@ menu "Base setup"
comment "Processor type and features"
-source "kernel/time/Kconfig"
-
config 64BIT
def_bool y
prompt "64 bit kernel"
@@ -147,9 +142,6 @@ config 64BIT
config 32BIT
def_bool y if !64BIT
-config KTIME_SCALAR
- def_bool 32BIT
-
config SMP
def_bool y
prompt "Symmetric multi-processing support"
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 6a2cb560e968..73dae8b9b77a 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -115,7 +115,7 @@ static struct inode *hypfs_make_inode(struct super_block *sb, umode_t mode)
static void hypfs_evict_inode(struct inode *inode)
{
- end_writeback(inode);
+ clear_inode(inode);
kfree(inode->i_private);
}
diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h
index 96076676e224..bdcbe0f8dd7b 100644
--- a/arch/s390/include/asm/kvm.h
+++ b/arch/s390/include/asm/kvm.h
@@ -52,4 +52,9 @@ struct kvm_sync_regs {
__u32 acrs[16]; /* access registers */
__u64 crs[16]; /* control registers */
};
+
+#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
+#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
+#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
+#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
#endif
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 7343872890a2..dd17537b9a9d 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -148,6 +148,7 @@ struct kvm_vcpu_stat {
u32 instruction_sigp_restart;
u32 diagnose_10;
u32 diagnose_44;
+ u32 diagnose_9c;
};
struct kvm_s390_io_info {
diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h
index 6964db226f83..a98832961035 100644
--- a/arch/s390/include/asm/kvm_para.h
+++ b/arch/s390/include/asm/kvm_para.h
@@ -149,6 +149,11 @@ static inline unsigned int kvm_arch_para_features(void)
return 0;
}
+static inline bool kvm_check_and_clear_guest_paused(void)
+{
+ return false;
+}
+
#endif
#endif /* __S390_KVM_PARA_H */
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index fed7bee650a0..bf238c55740b 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -48,6 +48,7 @@ int sclp_cpu_deconfigure(u8 cpu);
void sclp_facilities_detect(void);
unsigned long long sclp_get_rnmax(void);
unsigned long long sclp_get_rzm(void);
+u8 sclp_get_fac85(void);
int sclp_sdias_blk_count(void);
int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
int sclp_chp_configure(struct chp_id chpid);
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index a353f0ea45c2..b23d9ac77dfc 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -47,9 +47,30 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 5, "%s", "diag time slice end");
vcpu->stat.diagnose_44++;
- vcpu_put(vcpu);
- yield();
- vcpu_load(vcpu);
+ kvm_vcpu_on_spin(vcpu);
+ return 0;
+}
+
+static int __diag_time_slice_end_directed(struct kvm_vcpu *vcpu)
+{
+ struct kvm *kvm = vcpu->kvm;
+ struct kvm_vcpu *tcpu;
+ int tid;
+ int i;
+
+ tid = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
+ vcpu->stat.diagnose_9c++;
+ VCPU_EVENT(vcpu, 5, "diag time slice end directed to %d", tid);
+
+ if (tid == vcpu->vcpu_id)
+ return 0;
+
+ kvm_for_each_vcpu(i, tcpu, kvm)
+ if (tcpu->vcpu_id == tid) {
+ kvm_vcpu_yield_to(tcpu);
+ break;
+ }
+
return 0;
}
@@ -89,6 +110,8 @@ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu)
return diag_release_pages(vcpu);
case 0x44:
return __diag_time_slice_end(vcpu);
+ case 0x9c:
+ return __diag_time_slice_end_directed(vcpu);
case 0x308:
return __diag_ipl_functions(vcpu);
default:
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 361456577c6f..979cbe55bf5e 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -101,6 +101,7 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
}
static intercept_handler_t instruction_handlers[256] = {
+ [0x01] = kvm_s390_handle_01,
[0x83] = kvm_s390_handle_diag,
[0xae] = kvm_s390_handle_sigp,
[0xb2] = kvm_s390_handle_b2,
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 217ce44395a4..664766d0c83c 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -28,6 +28,7 @@
#include <asm/pgtable.h>
#include <asm/nmi.h>
#include <asm/switch_to.h>
+#include <asm/sclp.h>
#include "kvm-s390.h"
#include "gaccess.h"
@@ -74,6 +75,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "instruction_sigp_restart", VCPU_STAT(instruction_sigp_restart) },
{ "diagnose_10", VCPU_STAT(diagnose_10) },
{ "diagnose_44", VCPU_STAT(diagnose_44) },
+ { "diagnose_9c", VCPU_STAT(diagnose_9c) },
{ NULL }
};
@@ -133,8 +135,16 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_S390_UCONTROL:
#endif
case KVM_CAP_SYNC_REGS:
+ case KVM_CAP_ONE_REG:
r = 1;
break;
+ case KVM_CAP_NR_VCPUS:
+ case KVM_CAP_MAX_VCPUS:
+ r = KVM_MAX_VCPUS;
+ break;
+ case KVM_CAP_S390_COW:
+ r = sclp_get_fac85() & 0x2;
+ break;
default:
r = 0;
}
@@ -423,6 +433,71 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
return 0;
}
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
+{
+ /* kvm common code refers to this, but never calls it */
+ BUG();
+ return 0;
+}
+
+static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
+ struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_S390_TODPR:
+ r = put_user(vcpu->arch.sie_block->todpr,
+ (u32 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_EPOCHDIFF:
+ r = put_user(vcpu->arch.sie_block->epoch,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CPU_TIMER:
+ r = put_user(vcpu->arch.sie_block->cputm,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CLOCK_COMP:
+ r = put_user(vcpu->arch.sie_block->ckc,
+ (u64 __user *)reg->addr);
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
+static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
+ struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_S390_TODPR:
+ r = get_user(vcpu->arch.sie_block->todpr,
+ (u32 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_EPOCHDIFF:
+ r = get_user(vcpu->arch.sie_block->epoch,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CPU_TIMER:
+ r = get_user(vcpu->arch.sie_block->cputm,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_CLOCK_COMP:
+ r = get_user(vcpu->arch.sie_block->ckc,
+ (u64 __user *)reg->addr);
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
{
kvm_s390_vcpu_initial_reset(vcpu);
@@ -753,6 +828,18 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
case KVM_S390_INITIAL_RESET:
r = kvm_arch_vcpu_ioctl_initial_reset(vcpu);
break;
+ case KVM_SET_ONE_REG:
+ case KVM_GET_ONE_REG: {
+ struct kvm_one_reg reg;
+ r = -EFAULT;
+ if (copy_from_user(&reg, argp, sizeof(reg)))
+ break;
+ if (ioctl == KVM_SET_ONE_REG)
+ r = kvm_arch_vcpu_ioctl_set_one_reg(vcpu, &reg);
+ else
+ r = kvm_arch_vcpu_ioctl_get_one_reg(vcpu, &reg);
+ break;
+ }
#ifdef CONFIG_KVM_S390_UCONTROL
case KVM_S390_UCAS_MAP: {
struct kvm_s390_ucas_mapping ucasmap;
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index ff28f9d1c9eb..2294377975e8 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -79,6 +79,7 @@ int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
/* implemented in priv.c */
int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
+int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
/* implemented in sigp.c */
int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index e5a45dbd26ac..68a6b2ed16bf 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -380,3 +380,34 @@ int kvm_s390_handle_e5(struct kvm_vcpu *vcpu)
return -EOPNOTSUPP;
}
+static int handle_sckpf(struct kvm_vcpu *vcpu)
+{
+ u32 value;
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu,
+ PGM_PRIVILEGED_OPERATION);
+
+ if (vcpu->run->s.regs.gprs[0] & 0x00000000ffff0000)
+ return kvm_s390_inject_program_int(vcpu,
+ PGM_SPECIFICATION);
+
+ value = vcpu->run->s.regs.gprs[0] & 0x000000000000ffff;
+ vcpu->arch.sie_block->todpr = value;
+
+ return 0;
+}
+
+static intercept_handler_t x01_handlers[256] = {
+ [0x07] = handle_sckpf,
+};
+
+int kvm_s390_handle_01(struct kvm_vcpu *vcpu)
+{
+ intercept_handler_t handler;
+
+ handler = x01_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
+ if (handler)
+ return handler(vcpu);
+ return -EOPNOTSUPP;
+}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-20 08:38:24 +0300