Re: [PATCH] x86: fix and improve cmpxchg_double{,_local}()
From: Eric Dumazet
Date: Tue Jan 03 2012 - 11:13:45 EST
Le mardi 03 janvier 2012 Ã 16:08 +0000, Jan Beulich a Ãcrit :
> "1" and "672" are both local labels, so both are okay. As long as there's
> no other (colliding) use of 672 anywhere, that would seem to be the
> preferred fix (feel free to put my ack on the patch when you formally
> submit it).
I was referring the use of a label local to the macro itself, with
restricted scope.
following psudi code would trigger an asm error :
.macro FOO
.local_label 1
1: lock
.section .smp_locks,"a"
.balign 4
.long 1b - .
.previous
.endm
FOO
jne 1b
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