diff -urN linux-2.6.19.ref/arch/mips/kernel/genex.S linux-2.6.19/arch/mips/kernel/genex.S
--- linux-2.6.19.ref/arch/mips/kernel/genex.S	2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19/arch/mips/kernel/genex.S	2006-12-04 21:34:09.000000000 +0100
@@ -73,6 +73,10 @@
 	.set	push
 	.set	mips3
 	.set	noat
+#ifdef CONFIG_BCM947XX
+	nop
+	nop
+#endif
 	mfc0	k1, CP0_CAUSE
 	li	k0, 31<<2
 	andi	k1, k1, 0x7c
diff -urN linux-2.6.19.ref/include/asm-mips/stackframe.h linux-2.6.19/include/asm-mips/stackframe.h
--- linux-2.6.19.ref/include/asm-mips/stackframe.h	2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6.19/include/asm-mips/stackframe.h	2006-12-04 21:34:09.000000000 +0100
@@ -334,6 +334,10 @@
 		.macro	RESTORE_SP_AND_RET
 		LONG_L	sp, PT_R29(sp)
 		.set	mips3
+#ifdef CONFIG_BCM947XX
+		nop
+		nop
+#endif
 		eret
 		.set	mips0
 		.endm