From: Glauber Costa <[EMAIL PROTECTED]>
If the calling cpu rewrites the system clock msr for any reason,
release the page we allocated in the last time.
Signed-off-by: Glauber Costa <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e65a9d6..6abd784 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -588,6 +588,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64
data)
kvm_write_wall_clock(vcpu->kvm, data);
break;
case MSR_KVM_SYSTEM_TIME: {
+ if (vcpu->arch.time_page)
+ kvm_release_page_dirty(vcpu->arch.time_page);
+
vcpu->arch.time = data & PAGE_MASK;
vcpu->arch.time_offset = data & ~PAGE_MASK;
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