powerpc: helper function to read, write AMR, IAMR, UAMOR registers

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Implements helper functions to read and write the key related
registers; AMR, IAMR, UAMOR.

AMR register tracks the read,write permission of a key
IAMR register tracks the execute permission of a key
UAMOR register enables and disables a key

Acked-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Ram Pai 2018-01-18 17:50:26 -08:00 • committed by Michael Ellerman

parent 4fb158f65a

commit 1b4037dead

1 changed files with 36 additions and 0 deletions

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arch/powerpc/mm/pkeys.c

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