powerpc: check key protection for user page access

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Make sure that the kernel does not access user pages without
checking their key-protection.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
[mpe: Integrate with upstream version of pte_access_permitted()]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Ram Pai 2018-01-18 17:50:38 -08:00 • committed by Michael Ellerman

parent f2407ef3ba

commit bca7aacfe8

1 changed files with 9 additions and 1 deletions

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arch/powerpc/include/asm/book3s/64/pgtable.h

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