powerpc/32s: Allow disabling KUEP at boot time

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PPC64 uses MMU features to enable/disable KUEP at boot time.
But feature fixups are applied way too early on PPC32.

Now that all KUEP related actions are in C following the
conversion of KUEP initial setup and context switch in C,
static branches can be used to enable/disable KUEP.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7745a2c3a08ec46302920a3f48d1cb9b5469dbbb.1622708530.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2021-06-03 08:41:42 +00:00 • committed by Michael Ellerman

parent 86f46f3432

commit 50d2f104cd

2 changed files with 12 additions and 5 deletions

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6

arch/powerpc/include/asm/book3s/32/kup.h

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11

arch/powerpc/mm/book3s32/kuep.c

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