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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-05-27 07:44:50 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-05-27 10:32:50 +0400 |
| commit | f637a49e507c88354ab32b5d914e06acfb7ee00d (patch) | |
| tree | 60ec94bc3dcf323028faf8b7fd31e6d4c73f2bb5 /arch/powerpc/include/asm/fixmap.h | |
| parent | b16e7766d6436835f473ba823ad04fbdfe5e9cbd (diff) | |
| download | linux-f637a49e507c88354ab32b5d914e06acfb7ee00d.tar.xz | |
powerpc: Minor cleanups of kernel virt address space definitions
Make FIXADDR_TOP a compile time constant and cleanup a
couple of definitions relative to the layout of the kernel
address space on ppc32. We also print out that layout at
boot time for debugging purposes.
This is a pre-requisite for properly fixing non-coherent
DMA allocactions.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/fixmap.h')
| -rw-r--r-- | arch/powerpc/include/asm/fixmap.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/fixmap.h b/arch/powerpc/include/asm/fixmap.h index d60fd18f428c..f1f4e23a84e9 100644 --- a/arch/powerpc/include/asm/fixmap.h +++ b/arch/powerpc/include/asm/fixmap.h @@ -14,8 +14,6 @@ #ifndef _ASM_FIXMAP_H #define _ASM_FIXMAP_H -extern unsigned long FIXADDR_TOP; - #ifndef __ASSEMBLY__ #include <linux/kernel.h> #include <asm/page.h> @@ -24,6 +22,8 @@ extern unsigned long FIXADDR_TOP; #include <asm/kmap_types.h> #endif +#define FIXADDR_TOP ((unsigned long)(-PAGE_SIZE)) + /* * Here we define all the compile-time 'special' virtual * addresses. The point is to have a constant address at |