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

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Message-ID: <08fd515f1e0925a9d640dffd6a97c3ddbcd0cf18.camel@linux.ibm.com>
Date:   Wed, 08 Apr 2020 15:00:33 -0300
From:   Leonardo Bras <leonardo@...ux.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Alexios Zavras <alexios.zavras@...el.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Christophe Leroy <christophe.leroy@....fr>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Enrico Weigelt <info@...ux.net>,
        Paul Mackerras <paulus@...ba.org>, peterz@...radead.org,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v3 1/1] ppc/crash: Reset spinlocks during crash

On Wed, 2020-04-08 at 22:21 +1000, Michael Ellerman wrote:
> We should be able to just allocate the rtas_args on the stack, it's only
> ~80 odd bytes. And then we can use rtas_call_unlocked() which doesn't
> take the global lock.

At this point, would it be a problem using kmalloc? 

Best regards,

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