[Xen-devel] [PATCH] x86: explicit suffix in inline assembler (for clang)

[Tim Deegan <tim@xxxxxxx>]

# HG changeset patch
# User Tim Deegan <tim@xxxxxxx>
# Date 1360846113 0
# Node ID 500907997cb7b9c6973147d56cfd8a1a4c136c7e
# Parent  4b01cc2c2c1f4836e7fb34a58bc13e125d67969e
x86: explicit suffix in inline assembler (for clang).

This fixes the clang build, and has no effect on gcc's output.

Signed-off-by: Tim Deegan <tim@xxxxxxx>

diff -r 4b01cc2c2c1f -r 500907997cb7 xen/arch/x86/time.c
--- a/xen/arch/x86/time.c       Thu Feb 14 12:36:01 2013 +0000
+++ b/xen/arch/x86/time.c       Thu Feb 14 12:48:33 2013 +0000
@@ -127,7 +127,7 @@ static inline u64 scale_delta(u64 delta,
         delta <<= scale->shift;
 
     asm (
-        "mul %2 ; shrd $32,%1,%0"
+        "mulq %2 ; shrd $32,%1,%0"
         : "=a" (product), "=d" (delta)
         : "rm" (delta), "0" ((u64)scale->mul_frac) );
 

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