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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-04-02 13:53:54 -0400
committerIngo Molnar <mingo@elte.hu>2008-04-24 17:57:32 -0400
commitaf711cda4f94b5fddcdc5eb4134387ae026e3171 (patch)
tree291b77deb0ad3f6fe83e8f77d8b0cfd553d07924 /drivers/xen
parent2724426924a471dc9fd8989dae56ab4d79519e34 (diff)
xen: move features.c from arch/x86/xen/features.c to drivers/xen
ia64/xen also uses it too. Move it into common place so that ia64/xen can share the code. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/Makefile2
-rw-r--r--drivers/xen/features.c29
2 files changed, 30 insertions, 1 deletions
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index 56592f0d6cef..609fdda90a34 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -1,2 +1,2 @@
1obj-y += grant-table.o 1obj-y += grant-table.o features.o
2obj-y += xenbus/ 2obj-y += xenbus/
diff --git a/drivers/xen/features.c b/drivers/xen/features.c
new file mode 100644
index 000000000000..0707714e40d6
--- /dev/null
+++ b/drivers/xen/features.c
@@ -0,0 +1,29 @@
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#include <asm/xen/hypervisor.h>
12#include <xen/features.h>
13
14u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
15EXPORT_SYMBOL_GPL(xen_features);
16
17void xen_setup_features(void)
18{
19 struct xen_feature_info fi;
20 int i, j;
21
22 for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
23 fi.submap_idx = i;
24 if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
25 break;
26 for (j = 0; j < 32; j++)
27 xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
28 }
29}