tile: handle __ro_after_init like parisc does

The tile architecture already marks RO_DATA as read-only in the kernel, so grouping RO_AFTER_INIT_DATA with RO_DATA, as is done by default, means the kernel faults in init when it tries to write to RO_AFTER_INIT_DATA. For now, just arrange that __ro_after_init is handled like __write_once, i.e. __read_mostly. Reviewed-by: Kees Cook <[email protected]> Signed-off-by: Chris Metcalf <[email protected]>
zhenyw · Nov 14, 2016 · e123386 · e123386
1 parent bc33b0c
commit e123386
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h
@@ -61,4 +61,7 @@
  */
 #define __write_once __read_mostly
 
+/* __ro_after_init is the generic name for the tile arch __write_once. */
+#define __ro_after_init __read_mostly
+
 #endif /* _ASM_TILE_CACHE_H */