powerpc: Make STRICT_MM_TYPECHECKS a config option
The STRICT_MM_TYPECHECKS code has bit-rotted over the years. To make it
possible to easily build test it, make it a CONFIG option.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 0efa8f9..3a510f4 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -19,6 +19,14 @@
depends on !PPC_DISABLE_WERROR
default y
+config STRICT_MM_TYPECHECKS
+ bool "Do extra type checking on mm types"
+ default n
+ help
+ This option turns on extra type checking for some mm related types.
+
+ If you don't know what this means, say N.
+
config PRINT_STACK_DEPTH
int "Stack depth to print" if DEBUG_KERNEL
default 64
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 69c0598..71294a6 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -278,9 +278,7 @@
#ifndef __ASSEMBLY__
-#undef STRICT_MM_TYPECHECKS
-
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
/* These are used to make use of C type-checking. */
/* PTE level */
diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index 43e6ad4..f951d9c 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -118,7 +118,7 @@
*/
#ifndef __real_pte
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
#define __real_pte(e,p) ((real_pte_t){(e)})
#define __rpte_to_pte(r) ((r).pte)
#else