tile: handle __ro_after_init like parisc does
authorChris Metcalf <cmetcalf@mellanox.com>
Mon, 7 Nov 2016 19:32:02 +0000 (14:32 -0500)
committerChris Metcalf <cmetcalf@mellanox.com>
Mon, 14 Nov 2016 21:46:41 +0000 (16:46 -0500)
commite123386bc31bbf467dc558f2f919de0b8b4ba58c
tree547970f8b4d4738328445bacc2431753b3faf6e0
parentbc33b0ca11e3df467777a4fa7639ba488c9d4911
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>
arch/tile/include/asm/cache.h