https://github.com/torvalds/linux
Revision 084189a88754d40e1bb9bfbc278e70c33e571685 authored by Richard Weinberger on 14 April 2011, 22:22:18 UTC, committed by Linus Torvalds on 14 April 2011, 23:06:56 UTC
Commit 8a5ec0ba "Lockless (and preemptless) fastpaths for slub" makes use
of this_cpu_cmpxchg_double() which needs this_cpu_cmpxchg16b_emu() on
x86_64.  Implementing cmpxchg16b emulation for UML would introduce too
much complexity.  So just disable it.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reported-by: Sergei Trofimovich <slyich@gmail.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 6d56dad
History
Tip revision: 084189a88754d40e1bb9bfbc278e70c33e571685 authored by Richard Weinberger on 14 April 2011, 22:22:18 UTC
um: disable CONFIG_CMPXCHG_LOCAL
Tip revision: 084189a

back to top