[tip: x86/asm] x86/percpu: Remove "e" constraint from XADD

[tip-bot2 for Brian Gerst]

The following commit has been merged into the x86/asm branch of tip:

Commit-ID:     e4d16defbbde028aeab2026995f0ced4240df6d6
Gitweb:        https://git.kernel.org/tip/e4d16defbbde028aeab2026995f0ced4240df6d6
Author:        Brian Gerst <brgerst@xxxxxxxxx>
AuthorDate:    Mon, 20 Jul 2020 13:49:19 -07:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 23 Jul 2020 11:46:40 +02:00

x86/percpu: Remove "e" constraint from XADD

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

Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx>
Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Tested-by: Sedat Dilek <sedat.dilek@xxxxxxxxx>
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Acked-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Dennis Zhou <dennis@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20200720204925.3654302-6-ndesaulniers@xxxxxxxxxx

---
 arch/x86/include/asm/percpu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 2a24f3c..9bb5440 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -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();					\