Commit 95871901 authored Mar 06, 2012 by Nadav Har'El Committed by Avi Kivity Mar 08, 2012

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: Nadav Har'El <nyh@il.ibm.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Avi 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);

Admin message