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Commit 8621b81c authored by Eric W. Biederman's avatar Eric W. Biederman Committed by Andi Kleen
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[PATCH] i386: Reserve kernel memory starting from _text 



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: default avatarEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 9f45accf

arch/i386/kernel/setup.c

+2 −2
Original line number Diff line number Diff line
@@ -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,