PA-RISC support

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/arch/arch-hppa.h b/arch/arch-hppa.h
new file mode 100644
index 0000000..c865a89
--- /dev/null
+++ b/arch/arch-hppa.h
@@ -0,0 +1,26 @@
+#ifndef ARCH_HPPA_H
+#define ARCH_HPPA_H
+
+#define ARCH	(arch_hppa)
+
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set		267
+#define __NR_ioprio_get		268
+#endif
+
+#ifndef __NR_fadvise64
+#define __NR_fadvise64		236
+#endif
+
+#ifndef __NR_sys_splice
+#define __NR_sys_splice		291
+#define __NR_sys_tee		293
+#define __NR_sys_vmsplice	294
+#endif
+
+#define nop	do { } while (0)
+
+#define read_barrier()	__asm__ __volatile__ ("" : : : "memory")
+#define write_barrier()	__asm__ __volatile__ ("" : : : "memory")
+
+#endif