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KVM: SVM: Clear C-bit from the page fault address

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When SEV is active, on #VMEXIT the  page fault address will contain the
C-bit. We must clear the C-bit before handling the fault.

Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: "Radim Krčmář" <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Tom Lendacky <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Borislav Petkov <[email protected]>
Signed-off-by: Brijesh Singh <[email protected]>
This commit is contained in:
Brijesh Singh committed 2017-12-04 13:33:14 -06:00
1 parent 1e80fdc09d
commit 0ede79e132
1 file changed
+2 -2
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arch/x86/kvm/svm.c
+2 -2
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@@ -2430,7 +2430,7 @@ static void svm_set_dr7(struct kvm_vcpu *vcpu, unsigned long value)
static int pf_interception(struct vcpu_svm *svm)
{
u64 fault_address = svm->vmcb->control.exit_info_2;
u64 fault_address = __sme_clr(svm->vmcb->control.exit_info_2);
u64 error_code = svm->vmcb->control.exit_info_1;
return kvm_handle_page_fault(&svm->vcpu, error_code, fault_address,
@@ -2440,7 +2440,7 @@ static int pf_interception(struct vcpu_svm *svm)
static int npf_interception(struct vcpu_svm *svm)
{
u64 fault_address = svm->vmcb->control.exit_info_2;
u64 fault_address = __sme_clr(svm->vmcb->control.exit_info_2);
u64 error_code = svm->vmcb->control.exit_info_1;
trace_kvm_page_fault(fault_address, error_code);