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Subject: Re: [PATCH v8 17/18] scsi: megaraid_sas: Added support for shared
 host tagset for cpuhotplug
To:     Qian Cai <cai@redhat.com>, Sumit Saxena <sumit.saxena@broadcom.com>
CC:     Kashyap Desai <kashyap.desai@broadcom.com>,
        Jens Axboe <axboe@kernel.dk>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        <don.brace@microsemi.com>, Ming Lei <ming.lei@redhat.com>,
        Bart Van Assche <bvanassche@acm.org>,
        <dgilbert@interlog.com>, <paolo.valente@linaro.org>,
        Hannes Reinecke <hare@suse.de>, Christoph Hellwig <hch@lst.de>,
        <linux-block@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        "Linux SCSI List" <linux-scsi@vger.kernel.org>,
        <esc.storagedev@microsemi.com>,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@broadcom.com>,
        <chenxiang66@hisilicon.com>, <luojiaxing@huawei.com>,
        Hannes Reinecke <hare@suse.com>
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From:   John Garry <john.garry@huawei.com>
Message-ID: <db92d37c-28fd-4f81-7b59-8f19e9178543@huawei.com>
Date:   Mon, 9 Nov 2020 14:05:26 +0000
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On 09/11/2020 13:39, Qian Cai wrote:
>> I suppose I could try do this myself also, but an authentic version
>> would be nicer.
> The closest one I have here is:
> https://cailca.coding.net/public/linux/mm/git/files/master/arm64.config
> 
> but it only selects the Thunder X2 platform and needs to manually select
> CONFIG_MEGARAID_SAS=m to start with, but none of arm64 systems here have
> megaraid_sas.

Thanks, I'm confident I can fix it up to get it going on my Huawei arm64 
D06CS.

So that board has a megaraid sas card. In addition, it also has hisi_sas 
HW, which is another storage controller which we enabled this same 
feature which is causing the problem.

I'll report back when I can.

Thanks,
john