KVM: disable tpr/cr8 sync when in-kernel APIC is used

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 8f8bfc9160e3..02af24e8350c 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -2005,7 +2005,8 @@ static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
                 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
 
         /* re-sync apic's tpr */
-        set_cr8(vcpu, kvm_run->cr8);
+        if (!irqchip_in_kernel(vcpu->kvm))
+                set_cr8(vcpu, kvm_run->cr8);
 
         if (vcpu->pio.cur_count) {
                 r = complete_pio(vcpu);