lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] x86: make __FIXADDR_TOP variable to allow it to make space for a hypervisor

Browse Source 
Make __FIXADDR_TOP a variable, so that it can be set to not get in the way of
address space a hypervisor may want to reserve.

Original patch by Gerd Hoffmann <kraxel@suse.de>

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeremy Fitzhardinge
2006-09-25 23:32:25 -07:00
committed by Linus Torvalds
parent 9f093394d7
commit 052e79941a
4 changed files with 75 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/asm-i386/fixmap.h
View File

@@ -19,7 +19,11 @@
* Leave one empty page between vmalloc'ed areas and
* the start of the fixmap.
*/
#define __FIXADDR_TOP 0xfffff000
#ifndef CONFIG_COMPAT_VDSO
extern unsigned long __FIXADDR_TOP;
#else
#define __FIXADDR_TOP 0xfffff000
#endif
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
@@ -93,6 +97,7 @@ enum fixed_addresses {
extern void __set_fixmap (enum fixed_addresses idx,
unsigned long phys, pgprot_t flags);
extern void reserve_top_address(unsigned long reserve);
#define set_fixmap(idx, phys) \
__set_fixmap(idx, phys, PAGE_KERNEL)