Commit d4e337fe authored Dec 15, 2017 by Max Filippov

xtensa: don't clear swapper_pg_dir in paging_init



swapper_pg_dir is located in the .bss, so it's zero-initialized anyway.
With KASAN enabled paging_init will be called after KASAN
initialization, it must not erase page directory entries set up for
KASAN shadow map.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

parent c2edb35a

arch/xtensa/mm/mmu.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -56,7 +56,6 @@ static void __init fixedrange_init(void)

		void __init paging_init(void)
		{
		memset(swapper_pg_dir, 0, PAGE_SIZE);
		#ifdef CONFIG_HIGHMEM
		fixedrange_init();
		pkmap_page_table = init_pmd(PKMAP_BASE, LAST_PKMAP);

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