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x86: Fix hwpoison code related build failure on 32-bit NUMAQ

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This build failure triggers:

 In file included from include/linux/suspend.h:8,
                 from arch/x86/kernel/asm-offsets_32.c:11,
                 from arch/x86/kernel/asm-offsets.c:2:
 include/linux/mm.h:503:2: error: #error SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS

Because due to the hwpoison page flag we ran out of page
flags on 32-bit.

Dont turn on hwpoison on 32-bit NUMA (it's rare in any
case).

Also clean up the Kconfig dependencies in the generic MM
code by introducing ARCH_SUPPORTS_MEMORY_FAILURE.

Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Linus Torvalds 2009-09-26 09:35:07 -07:00 • committed by Ingo Molnar
commit d949f36f18
2 changed files with 14 additions and 1 deletions
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4
mm/Kconfig
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@ -244,10 +244,12 @@ config DEFAULT_MMAP_MIN_ADDR
This value can be changed after boot using the
/proc/sys/vm/mmap_min_addr tunable.
config ARCH_SUPPORTS_MEMORY_FAILURE
bool
config MEMORY_FAILURE
depends on MMU
depends on X86_MCE
depends on ARCH_SUPPORTS_MEMORY_FAILURE
bool "Enable recovery from hardware memory errors"
help
Enables code to recover from some memory failures on systems