1/******************************************************************************
 2 * features.c
 3 *
 4 * Xen feature flags.
 5 *
 6 * Copyright (c) 2006, Ian Campbell, XenSource Inc.
 7 */
 8#include <linux/types.h>
 9#include <linux/cache.h>
10#include <linux/module.h>
11
12#include <asm/xen/hypercall.h>
13
14#include <xen/interface/xen.h>
15#include <xen/interface/version.h>
16#include <xen/features.h>
17
18u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
19EXPORT_SYMBOL_GPL(xen_features);
20
21void xen_setup_features(void)
22{
23	struct xen_feature_info fi;
24	int i, j;
25
26	for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
27		fi.submap_idx = i;
28		if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
29			break;
30		for (j = 0; j < 32; j++)
31			xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
32	}
33}

 1/******************************************************************************
 2 * features.c
 3 *
 4 * Xen feature flags.
 5 *
 6 * Copyright (c) 2006, Ian Campbell, XenSource Inc.
 7 */
 8#include <linux/types.h>
 9#include <linux/cache.h>
10#include <linux/export.h>
11
12#include <asm/xen/hypercall.h>
13
14#include <xen/interface/xen.h>
15#include <xen/interface/version.h>
16#include <xen/features.h>
17
18u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
19EXPORT_SYMBOL_GPL(xen_features);
20
21void xen_setup_features(void)
22{
23	struct xen_feature_info fi;
24	int i, j;
25
26	for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
27		fi.submap_idx = i;
28		if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
29			break;
30		for (j = 0; j < 32; j++)
31			xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
32	}
33}