Commit a649b720 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

xen/sys/hypervisor: change writable_pt to features 



/sys/hypervisor/properties/writable_pt was misnamed.  Rename to features,
expressed as a bit array in hex.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent cff7e81b

drivers/xen/sys-hypervisor.c

+26 −15
Original line number Diff line number Diff line
@@ -293,37 +293,48 @@ static ssize_t pagesize_show(struct hyp_sysfs_attr *attr, char *buffer) 


HYPERVISOR_ATTR_RO(pagesize);



/* eventually there will be several more features to export */

static ssize_t xen_feature_show(int index, char *buffer)

{

	int ret = -ENOMEM;

	struct xen_feature_info *info;

	ssize_t ret;

	struct xen_feature_info info;



	info = kmalloc(sizeof(struct xen_feature_info), GFP_KERNEL);

	if (info) {

		info->submap_idx = index;

		ret = HYPERVISOR_xen_version(XENVER_get_features, info);

	info.submap_idx = index;

	ret = HYPERVISOR_xen_version(XENVER_get_features, &info);

	if (!ret)

			ret = sprintf(buffer, "%d\n", info->submap);

		kfree(info);

	}

		ret = sprintf(buffer, "%08x", info.submap);



	return ret;

}



static ssize_t writable_pt_show(struct hyp_sysfs_attr *attr, char *buffer)

static ssize_t features_show(struct hyp_sysfs_attr *attr, char *buffer)

{

	return xen_feature_show(XENFEAT_writable_page_tables, buffer);

	ssize_t len;

	int i;



	len = 0;

	for (i = XENFEAT_NR_SUBMAPS-1; i >= 0; i--) {

		int ret = xen_feature_show(i, buffer + len);

		if (ret < 0) {

			if (len == 0)

				len = ret;

			break;

		}

		len += ret;

	}

	if (len > 0)

		buffer[len++] = '\n';



	return len;

}



HYPERVISOR_ATTR_RO(writable_pt);

HYPERVISOR_ATTR_RO(features);



static struct attribute *xen_properties_attrs[] = {

	&capabilities_attr.attr,

	&changeset_attr.attr,

	&virtual_start_attr.attr,

	&pagesize_attr.attr,

	&writable_pt_attr.attr,

	&features_attr.attr,

	NULL

};