linux-kernel - Re: 2 second nvme initialization delay regression in 5.18 [Was: Re: [bug report]nvme0: Admin Cmd(0x6), I/O Error (sct 0x0 / sc 0x2) MORE DNR observed during blktests]

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Date:   Wed, 15 Jun 2022 12:27:57 +0200
From:   Pankaj Raghav <pankydev8@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        "R, Monish Kumar" <monish.kumar.r@...el.com>,
        "open list:NVM EXPRESS DRIVER" <linux-nvme@...ts.infradead.org>,
        Sagi Grimberg <sagi@...mberg.me>,
        "alan.adamson@...cle.com" <alan.adamson@...cle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Yi Zhang <yi.zhang@...hat.com>,
        Keith Busch <kbusch@...nel.org>, "axboe@...com" <axboe@...com>,
        "Rao, Abhijeet" <abhijeet.rao@...el.com>
Subject: Re: 2 second nvme initialization delay regression in 5.18 [Was: Re:
 [bug report]nvme0: Admin Cmd(0x6), I/O Error (sct 0x0 / sc 0x2) MORE DNR
 observed during blktests]

Hi Christoph,
On Mon, Jun 13, 2022 at 03:55:49PM +0200, Christoph Hellwig wrote:
> It all appears as PCIe, but the pci_dev has an is_thunderbolt flag.
> 
> Thanks to both of you for the information.  I'd like to wait until the
> end of the week or so if we can hear something from Samsung, and if we
> don't we'll have to quirk based on the model number.
Our FW team has started looking into the issue. They said they will try
to come up with a solution before 5.20. If not, we can add this quirk
based on the FW ver. and a proper solution can be added by 5.21.
>