Index: linux-2.6.21-mm1/arch/powerpc/Kconfig
===================================================================
--- linux-2.6.21-mm1.orig/arch/powerpc/Kconfig	2007-05-08 11:26:28.000000000 -0700
+++ linux-2.6.21-mm1/arch/powerpc/Kconfig	2007-05-08 11:26:32.000000000 -0700
@@ -128,7 +128,6 @@ config GENERIC_BUG
 config ARCH_USES_SLAB_PAGE_STRUCT
 	bool
 	default y
-	depends on SPLIT_PTLOCK_CPUS <= NR_CPUS
 
 config SYS_SUPPORTS_APM_EMULATION
 	bool