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

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Date:   Mon, 09 Nov 2020 08:39:32 -0500
From:   Qian Cai <cai@...hat.com>
To:     John Garry <john.garry@...wei.com>,
        Sumit Saxena <sumit.saxena@...adcom.com>
Cc:     Kashyap Desai <kashyap.desai@...adcom.com>,
        Jens Axboe <axboe@...nel.dk>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        don.brace@...rosemi.com, Ming Lei <ming.lei@...hat.com>,
        Bart Van Assche <bvanassche@....org>, dgilbert@...erlog.com,
        paolo.valente@...aro.org, Hannes Reinecke <hare@...e.de>,
        Christoph Hellwig <hch@....de>, linux-block@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Linux SCSI List <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 Mon, 2020-11-09 at 08:49 +0000, John Garry wrote:
> On 07/11/2020 00:17, Qian Cai wrote:
> > On Sat, 2020-11-07 at 00:55 +0530, Sumit Saxena wrote:
> > > I am able to hit the boot hang and similar kind of stack traces as
> > > reported by Qian with shared .config on x86 machine.
> > > In my case the system boots after a hang of 40-45 mins. Qian, is it
> > > true for you as well ?
> > I don't know. I had never waited for that long.
> > 
> > .
> > 
> 
> Hi Qian,
> 
> By chance do have an equivalent arm64 .config, enabling the same RH 
> config options?
> 
> 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.