diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2005-12-04 08:39:23 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-01-09 04:52:14 +0100 |
| commit | 398ab1fcb960ea0800f40a9c36355855e3e23389 (patch) | |
| tree | eb7eda3afffb3c99fc57b1064c7501e0ee2cf931 /include/asm-powerpc/page.h | |
| parent | powerpc: Fix typo in head_64.S (diff) | |
| download | linux-398ab1fcb960ea0800f40a9c36355855e3e23389.tar.xz linux-398ab1fcb960ea0800f40a9c36355855e3e23389.zip | |
[PATCH] powerpc: Add CONFIG_CRASH_DUMP
This patch adds a Kconfig variable, CONFIG_CRASH_DUMP, which configures the
built kernel for use as a Kdump kernel.
Currently "all" this involves is changing the value of KERNELBASE to 32 MB.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/page.h')
| -rw-r--r-- | include/asm-powerpc/page.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/asm-powerpc/page.h b/include/asm-powerpc/page.h index 4696bdbcc085..76d7cb4b4ffc 100644 --- a/include/asm-powerpc/page.h +++ b/include/asm-powerpc/page.h @@ -51,8 +51,16 @@ * * If you want to test if something's a kernel address, use is_kernel_addr(). */ + +#ifdef CONFIG_CRASH_DUMP +/* Kdump kernel runs at 32 MB, change at your peril. */ +#define PHYSICAL_START 0x2000000 +#else +#define PHYSICAL_START 0x0 +#endif + #define PAGE_OFFSET ASM_CONST(CONFIG_KERNEL_START) -#define KERNELBASE PAGE_OFFSET +#define KERNELBASE (PAGE_OFFSET + PHYSICAL_START) #ifdef CONFIG_DISCONTIGMEM #define page_to_pfn(page) discontigmem_page_to_pfn(page) |