powerpc/64s/kuap: Restore AMR in system reset exception

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The system reset interrupt handler locks AMR and exits with
EXCEPTION_RESTORE_REGS without restoring AMR. Similarly to the
soft-NMI handler, it needs to restore.

Fixes: 890274c2dc ("powerpc/64s: Implement KUAP for Radix MMU")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200429065654.1677541-5-npiggin@gmail.com

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Nicholas Piggin 2020-04-29 16:56:52 +10:00 • committed by Michael Ellerman

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commit 53459dc970

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arch/powerpc/kernel/exceptions-64s.S

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