powerpc/nohash: Move setup_kuap out of 8xx.c

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In order to reuse it on booke/4xx, move KUAP
setup routine out of 8xx.c

Make them usable on SMP by removing the __init tag
as it is called for each CPU.

And use __prevent_user_access() instead of hard
coding initial lock.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ae35eec3426509efc2b8ae69586c822e2fe2642a.1634627931.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2021-10-19 09:29:24 +02:00 • committed by Michael Ellerman

parent 937fb7003e

commit 25ae981faf

3 changed files with 32 additions and 22 deletions

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21

arch/powerpc/mm/nohash/8xx.c

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2

arch/powerpc/mm/nohash/Makefile

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31

arch/powerpc/mm/nohash/kup.c

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