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| author | Yinghai Lu <yinghai@kernel.org> | 2009-03-12 16:04:42 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-03-14 17:23:47 -0700 |
| commit | 7543c1de84ed93c6769c9f20dced08a522af8912 (patch) | |
| tree | dbeab0ab071b86c80b4d7c2701c7b767616772a6 /arch/x86/include | |
| parent | 6de6cb442e76bbaf2e685150be8ddac0f237a59c (diff) | |
x86-32: compute initial mapping size more accurately
Impact: simplification
We only need to map the kernel in head_32.S, not the whole of
lowmem. We use 512MB as a reasonable (but arbitrary) limit on
the maximum size of the kernel image.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/page_32_types.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/page_32_types.h b/arch/x86/include/asm/page_32_types.h index f1e4a79a6e4..0f915ae649a 100644 --- a/arch/x86/include/asm/page_32_types.h +++ b/arch/x86/include/asm/page_32_types.h @@ -39,6 +39,11 @@ #define __VIRTUAL_MASK_SHIFT 32 #endif /* CONFIG_X86_PAE */ +/* + * Kernel image size is limited to 512 MB (see in arch/x86/kernel/head_32.S) + */ +#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) + #ifndef __ASSEMBLY__ /* |