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authorMel Gorman <mgorman@suse.de>2014-06-05 03:06:29 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-05 03:53:55 +0400
commit4468dd76f51f8be75d4f04f1d721e379596e7262 (patch)
tree215b461e3b2d32bb6a5c8fcdbd22608626c8c23a /arch
parentac13a829f6adb674015ab399594c089990104af7 (diff)
downloadlinux-4468dd76f51f8be75d4f04f1d721e379596e7262.tar.xz
x86: require x86-64 for automatic NUMA balancing
32-bit support for NUMA is an oddity on its own but with automatic NUMA balancing on top there is a reasonable risk that the CPUPID information cannot be stored in the page flags. This patch removes support for automatic NUMA support on 32-bit x86. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Anvin <hpa@zytor.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Steven Noonan <steven@uplinklabs.net> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e41b258ad040..896a411a4584 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -26,7 +26,7 @@ config X86
select ARCH_MIGHT_HAVE_PC_SERIO
select HAVE_AOUT if X86_32
select HAVE_UNSTABLE_SCHED_CLOCK
- select ARCH_SUPPORTS_NUMA_BALANCING
+ select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
select ARCH_SUPPORTS_INT128 if X86_64
select ARCH_WANTS_PROT_NUMA_PROT_NONE
select HAVE_IDE