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author | Mel Gorman <mel@csn.ul.ie> | 2006-10-11 01:20:39 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:14 -0700 |
commit | 6391af174ad75f72e92043c1dd8302660a2fec58 (patch) | |
tree | 43dfb9a1acfbdabb820180834d4e8efdcfcbe46e /mm/page_alloc.c | |
parent | 4e0fadfcf62e252d2b14de0e0927eb2830c0c28c (diff) | |
download | linux-stable-6391af174ad75f72e92043c1dd8302660a2fec58.tar.gz linux-stable-6391af174ad75f72e92043c1dd8302660a2fec58.tar.bz2 linux-stable-6391af174ad75f72e92043c1dd8302660a2fec58.zip |
[PATCH] mm: use symbolic names instead of indices for zone initialisation
Arch-independent zone-sizing is using indices instead of symbolic names to
offset within an array related to zones (max_zone_pfns). The unintended
impact is that ZONE_DMA and ZONE_NORMAL is initialised on powerpc instead
of ZONE_DMA and ZONE_HIGHMEM when CONFIG_HIGHMEM is set. As a result, the
the machine fails to boot but will boot with CONFIG_HIGHMEM turned off.
The following patch properly initialises the max_zone_pfns[] array and uses
symbolic names instead of indices in each architecture using
arch-independent zone-sizing. Two users have successfully booted their
powerpcs with it (one an ibook G4). It has also been boot tested on x86,
x86_64, ppc64 and ia64. Please merge for 2.6.19-rc2.
Credit to Benjamin Herrenschmidt for identifying the bug and rolling the
first fix. Additional credit to Johannes Berg and Andreas Schwab for
reporting the problem and testing on powerpc.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions