Commit 6da63cf9 authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: Don't allow the guest to turn off the cpu cache 



The cpu cache is a host resource; the guest should not be able to turn
it off (even for itself).

Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 038881c8

drivers/kvm/svm.c

+3 −1
Original line number Diff line number Diff line
@@ -737,8 +737,10 @@ static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) 
	}

#endif

	vcpu->svm->cr0 = cr0;

	vcpu->svm->vmcb->save.cr0 = cr0 | CR0_PG_MASK | CR0_WP_MASK;

	vcpu->cr0 = cr0;

	cr0 |= CR0_PG_MASK | CR0_WP_MASK;

	cr0 &= ~(CR0_CD_MASK | CR0_NW_MASK);

	vcpu->svm->vmcb->save.cr0 = cr0;

}



static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)