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| author | Yang, Sheng <sheng.yang@intel.com> | 2007-09-12 18:03:11 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:26 +0200 |
| commit | 6e5d865c0b9679b00b5e5f0754c9fc2b6b9894d6 (patch) | |
| tree | 1b8133926578a16f8849143da5a7d5a6d9e67b24 /drivers/kvm/vmx.h | |
| parent | 2a8067f17b8442ecce0b14e134823020ff33b4fa (diff) | |
| download | op-kernel-dev-6e5d865c0b9679b00b5e5f0754c9fc2b6b9894d6.zip op-kernel-dev-6e5d865c0b9679b00b5e5f0754c9fc2b6b9894d6.tar.gz | |
KVM: VMX: Use shadow TPR/cr8 for 64-bits guests
This patch enables TPR shadow of VMX on CR8 access. 64bit Windows using
CR8 access TPR frequently. The TPR shadow can improve the performance of
access TPR by not causing vmexit.
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/vmx.h')
| -rw-r--r-- | drivers/kvm/vmx.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/kvm/vmx.h b/drivers/kvm/vmx.h index 35d0b58..fd4e146 100644 --- a/drivers/kvm/vmx.h +++ b/drivers/kvm/vmx.h @@ -213,6 +213,7 @@ enum vmcs_field { #define EXIT_REASON_MSR_READ 31 #define EXIT_REASON_MSR_WRITE 32 #define EXIT_REASON_MWAIT_INSTRUCTION 36 +#define EXIT_REASON_TPR_BELOW_THRESHOLD 43 /* * Interruption-information format |
