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| author | Joerg Roedel | 2008-04-16 16:51:17 +0200 |
|---|---|---|
| committer | Avi Kivity | 2008-04-27 17:21:42 +0200 |
| commit | d7bf8221a3037d0d0760a1ccf1833bda03213abf (patch) | |
| tree | 04735d97c44d77f39e874e55b814e88ad9fb612c /arch/x86/kvm/svm.c | |
| parent | KVM: export kvm_lapic_set_tpr() to modules (diff) | |
| download | kernel-qcow2-linux-d7bf8221a3037d0d0760a1ccf1833bda03213abf.tar.gz kernel-qcow2-linux-d7bf8221a3037d0d0760a1ccf1833bda03213abf.tar.xz kernel-qcow2-linux-d7bf8221a3037d0d0760a1ccf1833bda03213abf.zip | |
KVM: SVM: sync V_TPR with LAPIC.TPR if CR8 write intercept is disabled
If the CR8 write intercept is disabled the V_TPR field of the VMCB needs to be
synced with the TPR field in the local apic.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index f8ce36e6690c..ee2ee83f3c48 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1620,6 +1620,16 @@ static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu) { } +static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR8_MASK)) { + int cr8 = svm->vmcb->control.int_ctl & V_TPR_MASK; + kvm_lapic_set_tpr(vcpu, cr8); + } +} + static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1791,6 +1801,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) stgi(); + sync_cr8_to_lapic(vcpu); + svm->next_rip = 0; } |