Messages in this thread Patch in this message | | | Date | Mon, 02 Mar 2009 17:43:03 +0100 | From | Johannes Weiner <> | Subject | [patch 6/7] xtensa: dont make bootmem bitmap larger than required |
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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> --- arch/xtensa/mm/init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- 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++) --
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