[PATCH 5/6] KVM: x86: Preserve injected TF across emulation

Jan Kiszka
2010-02-22T17:51:42Z

Call directly into the vendor services for getting/setting rflags in
emulate_instruction to ensure injected TF survives the emulation.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
arch/x86/kvm/x86.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e2e03a4..19e8b28 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3468,7 +3468,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);

vcpu->arch.emulate_ctxt.vcpu = vcpu;
- vcpu->arch.emulate_ctxt.eflags = kvm_get_rflags(vcpu);
+ vcpu->arch.emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
vcpu->arch.emulate_ctxt.mode =
(!is_protmode(vcpu)) ? X86EMUL_MODE_REAL :
(vcpu->arch.emulate_ctxt.eflags & X86_EFLAGS_VM)
@@ -3547,7 +3547,7 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
return EMULATE_DO_MMIO;
}

- kvm_set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+ kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);

if (vcpu->mmio_is_write) {
vcpu->mmio_needed = 0;
--
1.6.0.2