]> err.no Git - linux-2.6/commit
x86_64: allocate sparsemem memmap above 4G
authorZou Nan hai <nanhai.zou@intel.com>
Fri, 1 Jun 2007 07:46:28 +0000 (00:46 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Fri, 1 Jun 2007 15:18:27 +0000 (08:18 -0700)
commit2e1c49db4c640b35df13889b86b9d62215ade4b6
tree8b886843a57f5ff683700a9f623294e3f24d07ef
parentfa0aa866c82e441787e07169cb4925e3b673e891
x86_64: allocate sparsemem memmap above 4G

On systems with huge amount of physical memory, VFS cache and memory memmap
may eat all available system memory under 4G, then the system may fail to
allocate swiotlb bounce buffer.

There was a fix for this issue in arch/x86_64/mm/numa.c, but that fix dose
not cover sparsemem model.

This patch add fix to sparsemem model by first try to allocate memmap above
4G.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/x86_64/mm/init.c
include/linux/bootmem.h
mm/sparse.c