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xen: move features.c from arch/x86/xen/features.c to drivers/xen

Browse source 
ia64/xen also uses it too. Move it into common place so that
ia64/xen can share the code.

Signed-off-by: Isaku Yamahata <[email protected]>
Signed-off-by: Jeremy Fitzhardinge <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Isaku Yamahata 2008-04-02 10:53:54 -07:00 • committed by Ingo Molnar
commit af711cda4f
3 changed files with 2 additions and 2 deletions
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2
drivers/xen/Makefile
View file

@ -1,2 +1,2 @@
obj-y += grant-table.o
obj-y += grant-table.o features.o
obj-y += xenbus/

29
drivers/xen/features.c Normal file
View file

@ -0,0 +1,29 @@
/******************************************************************************
* features.c
*
* Xen feature flags.
*
* Copyright (c) 2006, Ian Campbell, XenSource Inc.
*/
#include <linux/types.h>
#include <linux/cache.h>
#include <linux/module.h>
#include <asm/xen/hypervisor.h>
#include <xen/features.h>
u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
EXPORT_SYMBOL_GPL(xen_features);
void xen_setup_features(void)
{
struct xen_feature_info fi;
int i, j;
for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
fi.submap_idx = i;
if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
break;
for (j = 0; j < 32; j++)
xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
}
}