Messages in this thread Patch in this message | | | Date | Tue, 18 Jul 2006 00:00:12 -0700 | From | Chris Wright <> | Subject | [RFC PATCH 12/33] Change __FIXADDR_TOP to leave room for the hypervisor. |
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Move the definition of __FIXADDR_TOP into a subarch include file so that it can be overridden for subarch xen -- the hypervisor needs about 64MB at the top of the address space.
Signed-off-by: Ian Pratt <ian.pratt@xensource.com> Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Signed-off-by: Chris Wright <chrisw@sous-sol.org> --- include/asm-i386/fixmap.h | 8 +------- include/asm-i386/mach-default/mach_fixmap.h | 11 +++++++++++ include/asm-i386/mach-xen/mach_fixmap.h | 11 +++++++++++ 3 files changed, 23 insertions(+), 7 deletions(-)
diff -r 1c88b225d413 include/asm-i386/fixmap.h --- a/include/asm-i386/fixmap.h Thu Jun 22 16:02:54 2006 -0400 +++ b/include/asm-i386/fixmap.h Thu Jun 22 16:05:56 2006 -0400 @@ -13,13 +13,7 @@ #ifndef _ASM_FIXMAP_H #define _ASM_FIXMAP_H - -/* used by vmalloc.c, vsyscall.lds.S. - * - * Leave one empty page between vmalloc'ed areas and - * the start of the fixmap. - */ -#define __FIXADDR_TOP 0xfffff000 +#include <mach_fixmap.h> #ifndef __ASSEMBLY__ #include <linux/kernel.h> diff -r 1c88b225d413 include/asm-i386/mach-default/mach_fixmap.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/include/asm-i386/mach-default/mach_fixmap.h Thu Jun 22 16:05:56 2006 -0400 @@ -0,0 +1,11 @@ +#ifndef __ASM_MACH_FIXMAP_H +#define __ASM_MACH_FIXMAP_H + +/* used by vmalloc.c, vsyscall.lds.S. + * + * Leave one empty page between vmalloc'ed areas and + * the start of the fixmap. + */ +#define __FIXADDR_TOP 0xfffff000 + +#endif /* __ASM_MACH_FIXMAP_H */ diff -r 1c88b225d413 include/asm-i386/mach-xen/mach_fixmap.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/include/asm-i386/mach-xen/mach_fixmap.h Thu Jun 22 16:05:56 2006 -0400 @@ -0,0 +1,13 @@ +#ifndef __ASM_MACH_FIXMAP_H +#define __ASM_MACH_FIXMAP_H + +#include <xen/interface/xen.h> + +/* used by vmalloc.c, vsyscall.lds.S. + * + * Leave one empty page between vmalloc'ed areas and + * the start of the fixmap. + */ +#define __FIXADDR_TOP (HYPERVISOR_VIRT_START - 2 * PAGE_SIZE) + +#endif /* __ASM_MACH_FIXMAP_H */ -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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