powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle

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In order to implement KUAP (Kernel Userspace Access Protection) on
Power9 we will be using the AMR, and therefore indirectly the
UAMOR/AMOR.

So save/restore these regs in the idle code.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Michael Ellerman 2019-04-18 16:51:17 +10:00

parent a3f3072db6

commit 53a712bae5

1 changed files with 23 additions and 4 deletions

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arch/powerpc/kernel/idle_book3s.S

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