powerpc/powernv: Fix machine check reporting of async store errors

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[ Upstream commit 3729e0ec59 ]

POWER9 and POWER10 asynchronous machine checks due to stores have their
cause reported in SRR1 but SRR1[42] is set, which in other cases
indicates DSISR cause.

Check for these cases and clear SRR1[42], so the cause matching uses
the i-side (SRR1) table.

Fixes: 7b9f71f974 ("powerpc/64s: POWER9 machine check handler")
Fixes: 201220bb0e ("powerpc/powernv: Machine check handler for POWER10")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210517140355.2325406-1-npiggin@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Nicholas Piggin 2021-05-18 00:03:55 +10:00 • committed by Greg Kroah-Hartman

parent c6c8a25011

commit 7ff5db55f6

1 changed files with 40 additions and 8 deletions

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arch/powerpc/kernel/mce_power.c

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