powerpc/pkeys: Save the pkey registers before fork

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When a thread forks the contents of AMR, IAMR, UAMOR registers in the
newly forked thread are not inherited.

Save the registers before forking, for content of those
registers to be automatically copied into the new thread.

Fixes: cf43d3b264 ("powerpc: Enable pkey subsystem")
Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Ram Pai 2018-07-17 06:51:05 -07:00 • committed by Michael Ellerman

parent 4a4a5e5d2a

commit c76662e825

1 changed files with 1 additions and 0 deletions

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arch/powerpc/kernel/process.c

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