static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu,
				       struct kvm_xcrs *guest_xcrs)
{
	int i, r = 0;

	if (!cpu_has_xsave)
		return -EINVAL;

	if (guest_xcrs->nr_xcrs > KVM_MAX_XCRS || guest_xcrs->flags)
		return -EINVAL;

	for (i = 0; i < guest_xcrs->nr_xcrs; i++)
		/* Only support XCR0 currently */
		if (guest_xcrs->xcrs[0].xcr == XCR_XFEATURE_ENABLED_MASK) {
			r = __kvm_set_xcr(vcpu, XCR_XFEATURE_ENABLED_MASK,
				guest_xcrs->xcrs[0].value);
			break;
		}
	if (r)
		r = -EINVAL;
	return r;
}
Unknown