From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Michael Ellerman <mpe@ellerman.id.au>, linuxppc-dev@ozlabs.org
Cc: npiggin@gmail.com
Subject: Re: powerpc/64: Disable irq restore warning for now
Date: Thu, 9 Aug 2018 00:28:08 +1000 (AEST) [thread overview]
Message-ID: <41ltyw6LLNz9s0n@ozlabs.org> (raw)
In-Reply-To: <20180807114846.6198-1-mpe@ellerman.id.au>
On Tue, 2018-08-07 at 11:48:46 UTC, Michael Ellerman wrote:
> We recently added a warning in arch_local_irq_restore() to check that
> the soft masking state matches reality.
>
> Unfortunately it trips in a few places, which are not entirely trivial
> to fix. The key problem is if we're doing function_graph tracing of
> restore_math(), the warning pops and then seems to recurse. It's not
> entirely clear because the system continuously oopses on all CPUs,
> with the output interleaved and unreadable.
>
> It's also been observed on a G5 coming out of idle.
>
> Until we can fix those cases disable the warning for now.
>
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Applied to powerpc next.
https://git.kernel.org/powerpc/c/4da1f79227ad42550e3e70e7b4812e
cheers
prev parent reply other threads:[~2018-08-08 14:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-07 11:48 [PATCH] powerpc/64: Disable irq restore warning for now Michael Ellerman
2018-08-08 14:28 ` Michael Ellerman [this message]
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