Commit bcd1c294 authored Sep 25, 2013 by Gleb Natapov Committed by Paolo Bonzini Sep 25, 2013

KVM: VMX: do not check bit 12 of EPT violation exit qualification when undefined



Bit 12 is undefined in any of the following cases:
- If the "NMI exiting" VM-execution control is 1 and the "virtual NMIs"
  VM-execution control is 0.
- If the VM exit sets the valid bit in the IDT-vectoring information field

Signed-off-by: Gleb Natapov <gleb@redhat.com>
[Add parentheses around & within && - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent ac570e04

arch/x86/kvm/vmx.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -5345,7 +5345,9 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
		* There are errata that may cause this bit to not be set:
		* AAK134, BY25.
		*/
		if (exit_qualification & INTR_INFO_UNBLOCK_NMI)
		if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
		cpu_has_virtual_nmis() &&
		(exit_qualification & INTR_INFO_UNBLOCK_NMI))
		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI);

		gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);