powerpc/kasan: Refactor update of early shadow mappings

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kasan_remap_early_shadow_ro() and kasan_unmap_early_shadow_vmalloc()
are both updating the early shadow mapping: the first one sets
the mapping read-only while the other clears the mapping.

Refactor and create kasan_update_early_region()

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8c496c0828de2608c7c940c45525d177e91b6f1b.1589866984.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2020-05-19 05:48:47 +00:00 • committed by Michael Ellerman

parent 7c31c05e00

commit 7dec42ab57

1 changed files with 18 additions and 21 deletions

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arch/powerpc/mm/kasan/kasan_init_32.c

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