KVM: SVM: Lazy fpu with npt

Now that we can allow the guest to play with cr0 when the fpu is loaded,
we can enable lazy fpu when npt is in use.

Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 83c7ab1bdad89ce10a82d40b3a10a0ea09860274..8d7cb62ebef689514c0cbcfd535a5eab591a0518 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2588,8 +2588,6 @@ static void svm_flush_tlb(struct kvm_vcpu *vcpu)
 
 static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)
 {
-       if (npt_enabled)
-               vcpu->fpu_active = 1;
 }
 
 static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu)
@@ -2928,12 +2926,6 @@ static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
 {
        struct vcpu_svm *svm = to_svm(vcpu);
 
-       if (npt_enabled) {
-               /* hack: npt requires active fpu at this time */
-               vcpu->fpu_active = 1;
-               return;
-       }
-
        update_cr0_intercept(svm);
        svm->vmcb->control.intercept_exceptions |= 1 << NM_VECTOR;
 }