diff options
| author |   Nadav Amit <namit@cs.technion.ac.il> | 2014-11-02 11:54:44 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2014-11-07 15:44:03 +0100 |
| commit | 7305eb5d8cf147ce4178e723c95de15e2f001429 (patch) | |
| tree | 030acd2f20dfaf9bd080332ffc634d039cef203e /arch/x86/kvm/vmx.c | |
| parent | KVM: x86: Emulator should set DR6 upon GD like real CPU (diff) | |
| download | linux-dev-7305eb5d8cf147ce4178e723c95de15e2f001429.tar.xz linux-dev-7305eb5d8cf147ce4178e723c95de15e2f001429.zip | |
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>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index f9d56c1945de..ad5e0806e1e1 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -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; |