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authorVadim Rozenfeld <vrozenfe@redhat.com>2014-01-23 18:12:53 +1100
committerPaolo Bonzini <pbonzini@redhat.com>2014-01-24 16:51:15 +0100
commitb3af1e889ec4909f6b48dabd19a311d9c9f8d58e (patch)
tree7817262c9300d08bc95b74be396288e91518de52
parentb94b64c9a79a322802f13f44e9690a7b6a22710e (diff)
KVM: x86: mark hyper-v vapic assist page as dirty
Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/x86.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0fa9c84e36c..dc11b4f9857 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1869,19 +1869,21 @@ static int set_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 data)
{
switch (msr) {
case HV_X64_MSR_APIC_ASSIST_PAGE: {
+ u64 gfn;
unsigned long addr;
if (!(data & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE)) {
vcpu->arch.hv_vapic = data;
break;
}
- addr = gfn_to_hva(vcpu->kvm, data >>
- HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT);
+ gfn = data >> HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT;
+ addr = gfn_to_hva(vcpu->kvm, gfn);
if (kvm_is_error_hva(addr))
return 1;
if (__clear_user((void __user *)addr, PAGE_SIZE))
return 1;
vcpu->arch.hv_vapic = data;
+ mark_page_dirty(vcpu->kvm, gfn);
break;
}
case HV_X64_MSR_EOI: