KVM: x86: Do not clear RFLAGS.TF when a singlestep trap occurs.

The trap flag stays set until software clears it.

Signed-off-by: Kyle Huey <khuey@kylehuey.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 7b38c5e6f412f35502ef1c50671903740e8e0416..dd6b41ea61b657ac07afb4377fbd1374832126dc 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5419,7 +5419,6 @@ static void kvm_vcpu_check_singlestep(struct kvm_vcpu *vcpu, unsigned long rflag
                        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