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authorRusty Russell <rusty@rustcorp.com.au>2010-01-05 12:48:49 +1030
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-05 16:01:35 -0800
commitdb677ffa5f5a4f15b9dad4d132b3477b80766d82 (patch)
tree1379d67ad09bb932a8afa5c85eccacba6d8ca19c
parent6307daad8496f5807a2ef60cbada55fe3b59c44e (diff)
Revert "x86: Side-step lguest problem by only building cmpxchg8b_emu for pre-Pentium"
This reverts commit ae1b22f6e46c03cede7cea234d0bf2253b4261cf. As Linus said in 982d007a6ee: "There was something really messy about cmpxchg8b and clone CPU's, so if you enable it on other CPUs later, do it carefully." This breaks lguest for those configs, but we can fix that by emulating if we have to. Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=14884 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/x86/Kconfig.cpu2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 08e442bc3ab9..f20ddf84a893 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -396,7 +396,7 @@ config X86_TSC
config X86_CMPXCHG64
def_bool y
- depends on !M386 && !M486
+ depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
# this should be set for all -march=.. options where the compiler
# generates cmov.