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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-24 16:17:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-24 16:17:30 -0700
commit07acfc2a9349a8ce45b236c2624dad452001966b (patch)
treec40f3eaac18a8320e65af220979223b5cd632b1b /arch/s390
parentb5f4035adfffbcc6b478de5b8c44b618b3124aff (diff)
parent322728e55aa7834e2fab2786b76df183c4843a12 (diff)
downloadlinux-07acfc2a9349a8ce45b236c2624dad452001966b.tar.bz2
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM changes from Avi Kivity: "Changes include additional instruction emulation, page-crossing MMIO, faster dirty logging, preventing the watchdog from killing a stopped guest, module autoload, a new MSI ABI, and some minor optimizations and fixes. Outside x86 we have a small s390 and a very large ppc update. Regarding the new (for kvm) rebaseless workflow, some of the patches that were merged before we switch trees had to be rebased, while others are true pulls. In either case the signoffs should be correct now." Fix up trivial conflicts in Documentation/feature-removal-schedule.txt arch/powerpc/kvm/book3s_segment.S and arch/x86/include/asm/kvm_para.h. I suspect the kvm_para.h resolution ends up doing the "do I have cpuid" check effectively twice (it was done differently in two different commits), but better safe than sorry ;) * 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (125 commits) KVM: make asm-generic/kvm_para.h have an ifdef __KERNEL__ block KVM: s390: onereg for timer related registers KVM: s390: epoch difference and TOD programmable field KVM: s390: KVM_GET/SET_ONEREG for s390 KVM: s390: add capability indicating COW support KVM: Fix mmu_reload() clash with nested vmx event injection KVM: MMU: Don't use RCU for lockless shadow walking KVM: VMX: Optimize %ds, %es reload KVM: VMX: Fix %ds/%es clobber KVM: x86 emulator: convert bsf/bsr instructions to emulate_2op_SrcV_nobyte() KVM: VMX: unlike vmcs on fail path KVM: PPC: Emulator: clean up SPR reads and writes KVM: PPC: Emulator: clean up instruction parsing kvm/powerpc: Add new ioctl to retreive server MMU infos kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM KVM: PPC: bookehv: Fix r8/r13 storing in level exception handler KVM: PPC: Book3S: Enable IRQs during exit handling KVM: PPC: Fix PR KVM on POWER7 bare metal KVM: PPC: Fix stbux emulation KVM: PPC: bookehv: Use lwz/stw instead of PPC_LL/PPC_STL for 32-bit fields ...
Diffstat (limited to 'arch/s390')
-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
9 files changed, 158 insertions, 3 deletions
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;
+}