The trap flag stays set until software clears it.
Signed-off-by: Kyle Huey <khuey@xxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 7b38c5e..dd6b41e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5414,17 +5414,16 @@ static void kvm_vcpu_check_singlestep(struct kvm_vcpu *vcpu, unsigned long rflag
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
kvm_run->debug.arch.dr6 = DR6_BS | DR6_FIXED_1 |
DR6_RTM;
kvm_run->debug.arch.pc = vcpu->arch.singlestep_rip;
kvm_run->debug.arch.exception = DB_VECTOR;
kvm_run->exit_reason = KVM_EXIT_DEBUG;
*r = EMULATE_USER_EXIT;
} else {
- vcpu->arch.emulate_ctxt.eflags &= ~X86_EFLAGS_TF;
/*
* "Certain debug exceptions may clear bit 0-3. The
* remaining contents of the DR6 register are never
* cleared by the processor".
*/
vcpu->arch.dr6 &= ~15;
vcpu->arch.dr6 |= DR6_BS | DR6_RTM;
kvm_queue_exception(vcpu, DB_VECTOR);
--
2.10.2
--
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