On 05/26/2011 02:16 PM, Christoph Lameter wrote: > Here is a new patch that may address the concerns. The list of cpus that > support CMPXCHG_DOUBLE is not complete.Could someone help me complete it? > Index: linux-2.6/arch/x86/Kconfig.cpu > =================================================================== > --- linux-2.6.orig/arch/x86/Kconfig.cpu 2011-05-26 16:03:33.625608967 -0500 > +++ linux-2.6/arch/x86/Kconfig.cpu 2011-05-26 16:13:22.795605197 -0500 > @@ -312,6 +312,16 @@ config X86_CMPXCHG > config CMPXCHG_LOCAL > def_bool X86_64 || (X86_32 && !M386) > > +# > +# CMPXCHG_DOUBLE needs to be set to enable the kernel to use cmpxchg16/8b > +# for cmpxchg_double if it find processor flags that indicate that the > +# capabilities are available. CMPXCHG_DOUBLE only compiles in > +# detection support. It needs to be set if there is a chance that processor > +# supports these instructions. > +# > +config CMPXCHG_DOUBLE > + def_bool GENERIC_CPU || X86_GENERIC || M486 || MPENTIUM4 || MATOM || MCORE2 > + How about: X86_64 || X86_GENERIC || !M386 -hpa -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>