um: disable CMPXCHG_DOUBLE as it breaks UML build
authorThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Wed, 14 Sep 2011 23:21:08 +0000 (16:21 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 15 Sep 2011 01:09:37 +0000 (18:09 -0700)
commite5f0bdc7840bdb791247cb98dfc1dab6ea6c7da4
treee818977d221bdb93b8bb6098310f25e99877736a
parent0d6617c7732c083659566117ca620eda6f1a87af
um: disable CMPXCHG_DOUBLE as it breaks UML build

Commit b789ef518b2 ("slub: Add cmpxchg_double_slab()") tests for
cmpxchg_double support in the SLUB code and it breaks UML builds with
SLUB.  Since UML does not support checking for CPU features, disable
CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/um/Kconfig.x86