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xen/sys/hypervisor: change writable_pt to features

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

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2009-03-10 17:17:41 -07:00
parent cff7e81b3d
commit a649b72061
1 changed files with 26 additions and 15 deletions
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41
drivers/xen/sys-hypervisor.c
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@ -293,37 +293,48 @@ static ssize_t pagesize_show(struct hyp_sysfs_attr *attr, char *buffer)
HYPERVISOR_ATTR_RO(pagesize); HYPERVISOR_ATTR_RO(pagesize);
/* eventually there will be several more features to export */
static ssize_t xen_feature_show(int index, char *buffer) static ssize_t xen_feature_show(int index, char *buffer)
{ {
int ret = -ENOMEM; ssize_t ret;
struct xen_feature_info *info; struct xen_feature_info info;
info = kmalloc(sizeof(struct xen_feature_info), GFP_KERNEL); info.submap_idx = index;
if (info) { ret = HYPERVISOR_xen_version(XENVER_get_features, &info);
info->submap_idx = index; if (!ret)
ret = HYPERVISOR_xen_version(XENVER_get_features, info); ret = sprintf(buffer, "%08x", info.submap);
if (!ret)
ret = sprintf(buffer, "%d\n", info->submap);
kfree(info);
}
return ret; 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[] = { static struct attribute *xen_properties_attrs[] = {
&capabilities_attr.attr, &capabilities_attr.attr,
&changeset_attr.attr, &changeset_attr.attr,
&virtual_start_attr.attr, &virtual_start_attr.attr,
&pagesize_attr.attr, &pagesize_attr.attr,
&writable_pt_attr.attr, &features_attr.attr,
NULL NULL
}; };