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sparc32: mm: srmmu: add __ro_after_init to sparc32_cachetlb_ops structures

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The objects viking_ops, viking_sun4d_smp_ops and smp_cachetlb_ops of
type sparc32_cachetlb_ops are not modified anywhere after getting modified
in the init functions. Inside init their reference is also stored in a
pointer of type const struct sparc32_cachetlb_ops *. So these structures
are never modified after init, therefore add __ro_after to the declaration
of these structures.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bhumika Goyal 2017-01-14 18:01:54 +05:30 committed by David S. Miller
parent bc49a7831b
commit cbc41b43e7
1 changed files with 3 additions and 3 deletions
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6
arch/sparc/mm/srmmu.c
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@ -1444,7 +1444,7 @@ static void poke_viking(void)
srmmu_set_mmureg(mreg);
}
static struct sparc32_cachetlb_ops viking_ops = {
static struct sparc32_cachetlb_ops viking_ops __ro_after_init = {
.cache_all = viking_flush_cache_all,
.cache_mm = viking_flush_cache_mm,
.cache_page = viking_flush_cache_page,
@ -1475,7 +1475,7 @@ static struct sparc32_cachetlb_ops viking_ops = {
* flushes going at once will require SMP locking anyways so there's
* no real value in trying any harder than this.
*/
static struct sparc32_cachetlb_ops viking_sun4d_smp_ops = {
static struct sparc32_cachetlb_ops viking_sun4d_smp_ops __ro_after_init = {
.cache_all = viking_flush_cache_all,
.cache_mm = viking_flush_cache_mm,
.cache_page = viking_flush_cache_page,
@ -1759,7 +1759,7 @@ static void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
local_ops->sig_insns(mm, insn_addr);
}
static struct sparc32_cachetlb_ops smp_cachetlb_ops = {
static struct sparc32_cachetlb_ops smp_cachetlb_ops __ro_after_init = {
.cache_all = smp_flush_cache_all,
.cache_mm = smp_flush_cache_mm,
.cache_page = smp_flush_cache_page,