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Commit b3af1e88 authored by Vadim Rozenfeld's avatar Vadim Rozenfeld Committed by Paolo Bonzini
Browse files

KVM: x86: mark hyper-v vapic assist page as dirty 



Signed-off-by: default avatarVadim Rozenfeld <vrozenfe@redhat.com>
Reviewed-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b94b64c9

arch/x86/kvm/x86.c

+4 −2
Original line number Diff line number Diff line
@@ -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: