Commit ae1f5767 authored Mar 09, 2015 by Jan Kiszka Committed by Marcelo Tosatti Mar 13, 2015

KVM: nVMX: Do not emulate #UD while in guest mode



While in L2, leave all #UD to L2 and do not try to emulate it. If L1 is
interested in doing this, it reports its interest via the exception
bitmap, and we never get into handle_exception of L0 anyway.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

parent b34a8051

arch/x86/kvm/vmx.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -5065,6 +5065,10 @@ static int handle_exception(struct kvm_vcpu *vcpu)
		}

		if (is_invalid_opcode(intr_info)) {
		if (is_guest_mode(vcpu)) {
		kvm_queue_exception(vcpu, UD_VECTOR);
		return 1;
		}
		er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD);
		if (er != EMULATE_DONE)
		kvm_queue_exception(vcpu, UD_VECTOR);