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Commit 95871901 authored by Nadav Har'El's avatar Nadav Har'El Committed by Avi Kivity
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KVM: nVMX: Fix erroneous exception bitmap check 



The code which checks whether to inject a pagefault to L1 or L2 (in
nested VMX) was wrong, incorrect in how it checked the PF_VECTOR bit.
Thanks to Dan Carpenter for spotting this.

Signed-off-by: default avatarNadav Har'El <nyh@il.ibm.com>
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent a223c313

arch/x86/kvm/vmx.c

+1 −1
Original line number Diff line number Diff line
@@ -1664,7 +1664,7 @@ static int nested_pf_handled(struct kvm_vcpu *vcpu) 
	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);



	/* TODO: also check PFEC_MATCH/MASK, not just EB.PF. */

	if (!(vmcs12->exception_bitmap & PF_VECTOR))

	if (!(vmcs12->exception_bitmap & (1u << PF_VECTOR)))

		return 0;



	nested_vmx_vmexit(vcpu);