linux-kernel - Re: [PATCH v3 1/1] ppc/crash: Reset spinlocks during crash

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Message-ID: <bd01a908addbb9050bbbe1cff81401f3bb7ed841.camel@linux.ibm.com>
Date:   Mon, 06 Apr 2020 15:46:58 -0300
From:   Leonardo Bras <leonardo@...ux.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Enrico Weigelt <info@...ux.net>,
        Alexios Zavras <alexios.zavras@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Christophe Leroy <christophe.leroy@....fr>,
        peterz@...radead.org
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/1] ppc/crash: Reset spinlocks during crash

On Thu, 2020-04-02 at 22:28 +1100, Michael Ellerman wrote:
> Leonardo Bras <leonardo@...ux.ibm.com> 
> TBH I think we could just drop that printk() entirely.
> 
> Or we could tell printk() that we're in NMI context so that it uses the
> percpu buffers.
> 
> We should probably do the latter anyway, in case there's any other code
> we call that inadvertently calls printk().

Done:
http://patchwork.ozlabs.org/patch/1266956/

About the rtas-call, I think it will take more time, because I have to
study it properly.

Thank you,

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