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Commit 4610c83c authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
Browse files

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: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent d225157b

arch/x86/kvm/svm.c

+0 −8
Original line number Diff line number Diff line
@@ -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;

}