Messages in this thread Patch in this message | | | Date | Tue, 13 Sep 2005 03:15:40 -0700 | From | Andrew Morton <> | Subject | Re: [discuss] Re: [1/3] Add 4GB DMA32 zone |
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Andi Kleen <ak@suse.de> wrote: > > Andrew do you still have the patch with > the description? It must have been between 2.6.13mm1 and 2.6.13mm2.
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Because 2.6.13-mm2 adds new zone DMA32, ZONES_SHIFT becomes 3. So, flags bits reserved for (SECTION | NODE | ZONE) should be increase.
ZONE_SHIFT is increased, FLAGS_RESERVED should be.
Signed-off-by Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> ---
include/linux/mmzone.h | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff -puN include/linux/mmzone.h~x86_64-dma32-fix include/linux/mmzone.h --- 25/include/linux/mmzone.h~x86_64-dma32-fix Fri Sep 9 17:13:41 2005 +++ 25-akpm/include/linux/mmzone.h Fri Sep 9 17:14:13 2005 @@ -431,9 +431,10 @@ extern struct pglist_data contig_page_da #if BITS_PER_LONG == 32 || defined(ARCH_HAS_ATOMIC_UNSIGNED) /* * with 32 bit page->flags field, we reserve 8 bits for node/zone info. - * there are 3 zones (2 bits) and this leaves 8-2=6 bits for nodes. + * there are 4 zones (3 bits) and this leaves 8-2=6 bits for nodes. + * +6bits for sections if CONFIG_SPARSEMEM */ -#define FLAGS_RESERVED 8 +#define FLAGS_RESERVED 9 #elif BITS_PER_LONG == 64 /* _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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