x86-64: enable arch ffz again

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index a8f075a00a5656079f0a5107accad2eff34c0cd0..0d26feeb3c68df9a24e0b257dfe382b8f865b2ca 100644 (file)
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -37,6 +37,6 @@ static inline unsigned int arch_ffz(unsigned int bitmask)
        __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
        return bitmask;
 }
-//#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_FFZ
 
 #endif