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powerpc: store and restore the pkey state across context switches

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Store and restore the AMR, IAMR and UAMOR register state of the task
before scheduling out and after scheduling in, respectively.

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 17:50:31 -08:00 • committed by Michael Ellerman
commit 06bb53b338
5 changed files with 70 additions and 1 deletions
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