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[PATCH] i386: Reserve kernel memory starting from _text

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Currently when we are reserving the memory the kernel text
resides in we start at __PHYSICAL_START which happens to be
correct but not very obvious.  In addition when we start relocating
the kernel __PHYSICAL_START is the wrong value, as it is an
absolute symbol that does not get relocated.

By starting the reservation at __pa_symbol(_text)
the code is clearer and will be correct when relocated.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Eric W. Biederman 2006-12-07 02:14:03 +01:00 committed by Andi Kleen
parent 9f45accf17
commit 8621b81c74
1 changed files with 2 additions and 2 deletions
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4
arch/i386/kernel/setup.c
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@ -1118,8 +1118,8 @@ void __init setup_bootmem_allocator(void)
* the (very unlikely) case of us accidentally initializing the
* bootmem allocator with an invalid RAM area.
*/
reserve_bootmem(__PHYSICAL_START, (PFN_PHYS(min_low_pfn) +
bootmap_size + PAGE_SIZE-1) - (__PHYSICAL_START));
reserve_bootmem(__pa_symbol(_text), (PFN_PHYS(min_low_pfn) +
bootmap_size + PAGE_SIZE-1) - __pa_symbol(_text));
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,