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authorAvi Kivity <avi@qumranet.com>2007-12-26 13:57:04 +0200
committerAvi Kivity <avi@qumranet.com>2008-01-30 18:01:20 +0200
commit774ead3ad9bcbc05ef6aaebb9bdf8b4c3126923b (patch)
tree0395ee65292f99bd43ab2cd07beb554d99cb096f /arch/x86/kvm/x86.c
parentb93463aa59d67b21b4921e30bd5c5dcc7c35ffbd (diff)
KVM: Disable vapic support on Intel machines with FlexPriority
FlexPriority accelerates the tpr without any patching. Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e7eac27adb7..1f48ec87103 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;