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x86/percpu: Remove "e" constraint from XADD

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The "e" constraint represents a constant, but the XADD instruction doesn't
accept immediate operands.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Dennis Zhou <dennis@kernel.org>
Link: https://lkml.kernel.org/r/20200720204925.3654302-6-ndesaulniers@google.com
This commit is contained in:
Brian Gerst 2020-07-20 13:49:19 -07:00 committed by Thomas Gleixner
parent 33e5614a43
commit e4d16defbb
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/percpu.h
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@ -220,7 +220,7 @@ do { \
break; \
case 8: \
asm qual ("xaddq %0, "__percpu_arg(1) \
: "+re" (paro_ret__), "+m" (var) \
: "+r" (paro_ret__), "+m" (var) \
: : "memory"); \
break; \
default: __bad_percpu_size(); \