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Commit 6da63cf9 authored by Avi Kivity's avatar Avi Kivity
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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
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+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)