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 1b590f1..b0cfd80 100644
--- 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