Commit 7305eb5d authored Nov 02, 2014 by Nadav Amit Committed by Paolo Bonzini Nov 07, 2014

KVM: x86: Clear DR6[0:3] on #DB during handle_dr



DR6[0:3] (previous breakpoint indications) are cleared when #DB is injected
during handle_exception, just as real hardware does.  Similarily, handle_dr
should clear DR6[0:3].

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

parent 6d2a0526

arch/x86/kvm/vmx.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -5125,6 +5125,7 @@ static int handle_dr(struct kvm_vcpu *vcpu)
		vcpu->run->exit_reason = KVM_EXIT_DEBUG;
		return 0;
		} else {
		vcpu->arch.dr6 &= ~15;
		vcpu->arch.dr6 \|= DR6_BD \| DR6_RTM;
		kvm_queue_exception(vcpu, DB_VECTOR);
		return 1;