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authorChris Metcalf <cmetcalf@mellanox.com>2016-11-07 14:32:02 -0500
committerChris Metcalf <cmetcalf@mellanox.com>2016-11-14 16:46:41 -0500
commite123386bc31bbf467dc558f2f919de0b8b4ba58c (patch)
tree547970f8b4d4738328445bacc2431753b3faf6e0 /arch/tile
parentbc33b0ca11e3df467777a4fa7639ba488c9d4911 (diff)
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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 <keescook@chromium.org> Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Diffstat (limited to 'arch/tile')
-rw-r--r--arch/tile/include/asm/cache.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h
index 6160761d5f61..4810e48dbbbf 100644
--- 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 */