forked from luck/tmp_suning_uos_patched
Revert "x86: Side-step lguest problem by only building cmpxchg8b_emu for pre-Pentium"
This reverts commitae1b22f6e4
. As Linus said in982d007a6e
: "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>
This commit is contained in:
parent
6307daad84
commit
db677ffa5f
@ -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.
|
||||
|
Loading…
Reference in New Issue
Block a user