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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue, 8 Dec 2020 13:23:36 -0800
Message-ID: <CAHk-=wjsWB612YA0OSpVPkzePxQWyqcSGDaY1-x3R2AgjOCqSQ@mail.gmail.com>
Subject: Re: problem booting 5.10
To:     John Garry <john.garry@huawei.com>
Cc:     "Martin K. Petersen" <martin.petersen@oracle.com>,
        Julia Lawall <julia.lawall@inria.fr>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        nicolas.palix@univ-grenoble-alpes.fr,
        linux-scsi <linux-scsi@vger.kernel.org>,
        Kashyap Desai <kashyap.desai@broadcom.com>,
        Ming Lei <ming.lei@redhat.com>
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On Tue, Dec 8, 2020 at 1:14 PM John Garry <john.garry@huawei.com> wrote:
>
> JFYI, About "scsi: megaraid_sas: Added support for shared host tagset
> for cpuhotplug", we did have an issue reported here already from Qian
> about a boot hang:

Hmm. That does sound like it might be it.

At this point, the patches from Ming Lei seem to be a riskier approach
than perhaps just reverting the megaraid_sas change?

It looks like those patches are queued up for 5.11, and we could
re-apply the megaraid_sas change then?

Jens, comments?

And Julia - if it's that thing, then a

    git revert 103fbf8e4020

would be the thing to test.

           Linus