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Commit cbc41b43 authored by Bhumika Goyal's avatar Bhumika Goyal Committed by David S. Miller
Browse files

sparc32: mm: srmmu: add __ro_after_init to sparc32_cachetlb_ops structures 



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: default avatarBhumika Goyal <bhumirks@gmail.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bc49a783

arch/sparc/mm/srmmu.c

+3 −3
Original line number Diff line number Diff line
@@ -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,