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tile: handle __ro_after_init like parisc does

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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>
This commit is contained in:
Chris Metcalf 2016-11-07 14:32:02 -05:00
parent bc33b0ca11
commit e123386bc3
1 changed files with 3 additions and 0 deletions
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3
arch/tile/include/asm/cache.h
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@ -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 */