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authorLinus Torvalds <torvalds@linux-foundation.org>2010-12-17 20:32:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2010-12-17 20:32:39 +0300
commita6ac1f0af4b39f41fa69477cc44621c612403374 (patch)
tree3bc30b01c4a98a53477db77a4171696899b60f61 /arch
parent508817e7cd8cb585148d12b5673202142ece2330 (diff)
parent3e26f23091da06d02fa62da14c95f3688d27857c (diff)
downloadlinux-a6ac1f0af4b39f41fa69477cc44621c612403374.tar.xz
Merge branch 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Fix preemption counter leak in kvm_timer_init() KVM: enlarge number of possible CPUID leaves KVM: SVM: Do not report xsave in supported cpuid KVM: Fix OSXSAVE after migration
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/kvm_host.h2
-rw-r--r--arch/x86/kvm/svm.c4
-rw-r--r--arch/x86/kvm/vmx.c5
-rw-r--r--arch/x86/kvm/x86.c11
-rw-r--r--arch/x86/kvm/x86.h5
5 files changed, 15 insertions, 12 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9e6fe391094e..f702f82aa1eb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -79,7 +79,7 @@
#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
#define KVM_MIN_FREE_MMU_PAGES 5
#define KVM_REFILL_PAGES 25
-#define KVM_MAX_CPUID_ENTRIES 40
+#define KVM_MAX_CPUID_ENTRIES 80
#define KVM_NR_FIXED_MTRR_REGION 88
#define KVM_NR_VAR_MTRR 8
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1ca12298ffc7..b81a9b7c2ca4 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3494,6 +3494,10 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu)
static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
{
switch (func) {
+ case 0x00000001:
+ /* Mask out xsave bit as long as it is not supported by SVM */
+ entry->ecx &= ~(bit(X86_FEATURE_XSAVE));
+ break;
case 0x80000001:
if (nested)
entry->ecx |= (1 << 2); /* Set SVM bit */
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index ff21fdda0c53..81fcbe9515c5 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4227,11 +4227,6 @@ static int vmx_get_lpage_level(void)
return PT_PDPE_LEVEL;
}
-static inline u32 bit(int bitno)
-{
- return 1 << (bitno & 31);
-}
-
static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cdac9e592aa5..b989e1f1e5d3 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -155,11 +155,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
u64 __read_mostly host_xcr0;
-static inline u32 bit(int bitno)
-{
- return 1 << (bitno & 31);
-}
-
static void kvm_on_user_return(struct user_return_notifier *urn)
{
unsigned slot;
@@ -4569,9 +4564,11 @@ static void kvm_timer_init(void)
#ifdef CONFIG_CPU_FREQ
struct cpufreq_policy policy;
memset(&policy, 0, sizeof(policy));
- cpufreq_get_policy(&policy, get_cpu());
+ cpu = get_cpu();
+ cpufreq_get_policy(&policy, cpu);
if (policy.cpuinfo.max_freq)
max_tsc_khz = policy.cpuinfo.max_freq;
+ put_cpu();
#endif
cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
@@ -5522,6 +5519,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4;
kvm_x86_ops->set_cr4(vcpu, sregs->cr4);
+ if (sregs->cr4 & X86_CR4_OSXSAVE)
+ update_cpuid(vcpu);
if (!is_long_mode(vcpu) && is_pae(vcpu)) {
load_pdptrs(vcpu, vcpu->arch.walk_mmu, vcpu->arch.cr3);
mmu_reset_needed = 1;
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 2cea414489f3..c600da830ce0 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -70,6 +70,11 @@ static inline int is_paging(struct kvm_vcpu *vcpu)
return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
}
+static inline u32 bit(int bitno)
+{
+ return 1 << (bitno & 31);
+}
+
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq);