Make ARMv7 build and work

Contributed by debian bug #573027

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=573027

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

diff --git a/arch/arch-arm.h b/arch/arch-arm.h
index 1b590f114b563e675924c289265ce022fc3fd205..b0cfd8087efbcd3361f087c2c960e444484f8203 100644 (file)
--- a/arch/arch-arm.h
+++ b/arch/arch-arm.h
@@ -22,6 +22,10 @@
 #define nop             __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t")
 #define read_barrier() __asm__ __volatile__ ("" : : : "memory")
 #define write_barrier()        __asm__ __volatile__ ("" : : : "memory")
+#elif defined(__ARM_ARCH_7A__)
+#define        nop             __asm__ __volatile__ ("nop")
+#define read_barrier() __sync_synchronize()
+#define write_barrier()        __sync_synchronize()
 #endif
 
 #endif