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authorJohannes Weiner <jw@emlix.com>2009-03-04 16:21:29 +0100
committerChris Zankel <chris@zankel.net>2009-04-02 23:39:18 -0700
commit264da9f708b130122d881fa4570d1cd618440a73 (patch)
treee2db6ac982344c4187dd0cb089bc9977752c7c0a /arch/xtensa/mm
parent0bef42e5c061b4aa63cc488d11400a1ef8b8f5a2 (diff)
downloadlinux-264da9f708b130122d881fa4570d1cd618440a73.tar.gz
xtensa: don't make bootmem bitmap larger than required
If min_low_pfn is non-zero, the bitmap reserved for bootmem is bigger than needed. The number of pages bootmem has to maintain is the range from min_low_pfn to max_low_pfn. For now it has only been a theoretical mistake, min_low_pfn was always zero. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/mm')
-rw-r--r--arch/xtensa/mm/init.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 55b043a5918..a534d52a57b 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -130,7 +130,8 @@ void __init bootmem_init(void)
/* Find an area to use for the bootmem bitmap. */
- bootmap_size = bootmem_bootmap_pages(max_low_pfn) << PAGE_SHIFT;
+ bootmap_size = bootmem_bootmap_pages(max_low_pfn - min_low_pfn);
+ bootmap_size <<= PAGE_SHIFT;
bootmap_start = ~0;
for (i=0; i<sysmem.nr_banks; i++)