linux-kernel - Re: [PATCH v2 2/2] soc: fujitsu: Add A64FX diagnostic interrupt driver

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Message-ID: <OSZPR01MB705082EC83690A56ECC2BE79EB099@OSZPR01MB7050.jpnprd01.prod.outlook.com>
Date:   Wed, 9 Mar 2022 02:55:49 +0000
From:   "hasegawa-hitomi@...itsu.com" <hasegawa-hitomi@...itsu.com>
To:     Sumit Garg <sumit.garg@...aro.org>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "soc@...nel.org" <soc@...nel.org>,
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Subject: Re: [PATCH v2 2/2] soc: fujitsu: Add A64FX diagnostic interrupt
 driver

Hi Sumit,

> Would it be possible to pass a dynamic sysrq key from BMC to the host
> as that would unleash the true power of sysrq in an NMI context
> capable of launching kdb as one example?

A64FX's BMC supports a subset of the ipmitool command but it doesn't
have the ability to dynamically send additional information such as the
sysrq key, so I don't think it's possible.

Thank you
Hitomi Hasegawa