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xtensa: don't clear swapper_pg_dir in paging_init

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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>
This commit is contained in:
Max Filippov 2017-12-15 20:46:55 -08:00
parent c2edb35ae3
commit d4e337fe82
1 changed files with 0 additions and 1 deletions
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arch/xtensa/mm/mmu.c
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@ -56,7 +56,6 @@ static void __init fixedrange_init(void)
void __init paging_init(void) void __init paging_init(void)
{ {
memset(swapper_pg_dir, 0, PAGE_SIZE);
#ifdef CONFIG_HIGHMEM #ifdef CONFIG_HIGHMEM
fixedrange_init(); fixedrange_init();
pkmap_page_table = init_pmd(PKMAP_BASE, LAST_PKMAP); pkmap_page_table = init_pmd(PKMAP_BASE, LAST_PKMAP);