Commit 3ffb2468 authored Nov 02, 2014 by Nadav Amit Committed by Paolo Bonzini Nov 07, 2014

KVM: x86: No error-code on real-mode exceptions



Real-mode exceptions do not deliver error code. As can be seen in Intel SDM
volume 2, real-mode exceptions do not have parentheses, which indicate
error-code.  To avoid significant changes of the code, the error code is
"removed" during exception queueing.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 5b38ab87

arch/x86/kvm/x86.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -353,6 +353,8 @@ static void kvm_multiple_exception(struct kvm_vcpu *vcpu,

		if (!vcpu->arch.exception.pending) {
		queue:
		if (has_error && !is_protmode(vcpu))
		has_error = false;
		vcpu->arch.exception.pending = true;
		vcpu->arch.exception.has_error_code = has_error;
		vcpu->arch.exception.nr = nr;

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