powerpc/pseries: Limit machine check stack to 4GB

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This allows rtas_args to be put on the machine check stack, which
avoids a lot of complications with re-entrancy deadlocks.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200508043408.886394-10-npiggin@gmail.com

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Nicholas Piggin 2020-05-08 14:34:01 +10:00 • committed by Michael Ellerman

parent d7b14c5c04

commit d2cbbd45d4

1 changed files with 12 additions and 3 deletions

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arch/powerpc/kernel/setup_64.c

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