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ARM: 8734/1: mm: idmap: Mark variables as ro_after_init 

idmap_pgd, arch_phys_to_idmap_offset are setup once
while init stage, and never changed after that.
so, it is good candidate for __ro_after_init.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Jinbum Park 2017-12-12 01:25:30 +01:00 committed by Russell King
parent 670431eaac
commit 6fbab054ec
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mm/idmap.c
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@ -16,8 +16,8 @@
* are not supported on any CPU using the idmap tables as its current
* page tables.
*/
pgd_t *idmap_pgd;
long long arch_phys_to_idmap_offset;
pgd_t *idmap_pgd __ro_after_init;
long long arch_phys_to_idmap_offset __ro_after_init;
#ifdef CONFIG_ARM_LPAE
static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,