Commit 6fbab054 authored Dec 12, 2017 by Jinbum Park Committed by Russell King Dec 17, 2017

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>

parent 670431ea

arch/arm/mm/idmap.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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,