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[PATCH] kexec: reserve Bootmem fix for booting nondefault location kernel

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This patch fixes a problem with reserving memory during boot up of a kernel
built for non-default location.  Currently boot memory allocator reserves
the memory required by kernel image, boot allocaotor bitmap etc.  It
assumes that kernel is loaded at 1MB (HIGH_MEMORY hard coded to 1024*1024).
 But kernel can be built for non-default locatoin, hence existing
hardcoding will lead to reserving unnecessary memory.  This patch fixes it.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vivek Goyal 2005-06-25 14:57:51 -07:00 committed by Linus Torvalds
parent 3d345e3fc9
commit 8a9190853c
1 changed files with 2 additions and 2 deletions
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4
arch/i386/kernel/setup.c
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@ -1124,8 +1124,8 @@ void __init setup_bootmem_allocator(void)
* the (very unlikely) case of us accidentally initializing the
* bootmem allocator with an invalid RAM area.
*/
reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(min_low_pfn) +
bootmap_size + PAGE_SIZE-1) - (HIGH_MEMORY));
reserve_bootmem(__PHYSICAL_START, (PFN_PHYS(min_low_pfn) +
bootmap_size + PAGE_SIZE-1) - (__PHYSICAL_START));
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,