powerpc/book3s64/kup: Check max key supported before enabling kup

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Don't enable KUEP/KUAP if we support less than or equal to 3 keys.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201202043854.76406-1-aneesh.kumar@linux.ibm.com

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Aneesh Kumar K.V 2020-12-02 10:08:54 +05:30 • committed by Michael Ellerman

parent c91435d95c

commit 61130e203d

3 changed files with 26 additions and 14 deletions

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3

arch/powerpc/include/asm/kup.h

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33

arch/powerpc/mm/book3s64/pkeys.c

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4

arch/powerpc/mm/init-common.c

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