KVM: Disable vapic support on Intel machines with FlexPriority

FlexPriority accelerates the tpr without any patching.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e7eac27adb7f..1f48ec871035 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -684,9 +684,11 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_USER_MEMORY:
         case KVM_CAP_SET_TSS_ADDR:
         case KVM_CAP_EXT_CPUID:
-        case KVM_CAP_VAPIC:
                 r = 1;
                 break;
+        case KVM_CAP_VAPIC:
+                r = !kvm_x86_ops->cpu_has_accelerated_tpr();
+                break;
         default:
                 r = 0;
                 break;