diff -ur qemu-1.4.2.old/target-ppc/translate_init.c qemu-1.4.2/target-ppc/translate_init.c
--- qemu-1.4.2.old/target-ppc/translate_init.c	2013-05-24 14:37:58.000000000 +0100
+++ qemu-1.4.2/target-ppc/translate_init.c	2013-09-05 09:53:58.787648890 +0100
@@ -6738,6 +6738,10 @@
                  &spr_read_generic, &spr_write_generic,
                  &spr_read_generic, &spr_write_generic,
                  0x00000000);
+    spr_register(env, SPR_PPR, "PPR",
+                 &spr_read_generic, &spr_write_generic,
+                 &spr_read_generic, &spr_write_generic,
+                 0x00000000);
 #if !defined(CONFIG_USER_ONLY)
     env->slb_nr = 32;
 #endif