linux-kernel - Re: [PATCH v8 17/18] scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug

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Date:   Wed, 4 Nov 2020 18:08:28 +0000
From:   John Garry <john.garry@...wei.com>
To:     Kashyap Desai <kashyap.desai@...adcom.com>,
        Qian Cai <cai@...hat.com>, <axboe@...nel.dk>,
        <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>,
        <don.brace@...rosemi.com>, <ming.lei@...hat.com>,
        <bvanassche@....org>, <dgilbert@...erlog.com>,
        <paolo.valente@...aro.org>, <hare@...e.de>, <hch@....de>
CC:     Sumit Saxena <sumit.saxena@...adcom.com>,
        <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-scsi@...r.kernel.org>, <esc.storagedev@...rosemi.com>,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@...adcom.com>,
        <chenxiang66@...ilicon.com>, <luojiaxing@...wei.com>,
        Hannes Reinecke <hare@...e.com>
Subject: Re: [PATCH v8 17/18] scsi: megaraid_sas: Added support for shared
 host tagset for cpuhotplug

On 04/11/2020 16:07, Kashyap Desai wrote:
>>>
>>> v5.10-rc2 is also broken here.
>>
>> John, Kashyap, any update on this? If this is going to take a while to fix
>> it
>> proper, should I send a patch to revert this or at least disable the
>> feature by
>> default for megaraid_sas in the meantime, so it no longer breaks the
>> existing
>> systems out there?
> 
> I am trying to get similar h/w to try out. All my current h/w works fine.
> Give me couple of days' time.
> If this is not obviously common issue and need time, we will go with module
> parameter disable method.
> I will let you know.

Hi Kashyap,

Please also consider just disabling for this card, so any other possible 
issues are unearthed on other cards. I don't have this card or any x86 
machine to test it unfortunately to assist.

BTW, just to be clear, did you try the same .config as Qian Cai?

Thanks,
John