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]

[Christoph Hellwig]

On Wed, Jun 15, 2022 at 12:27:57PM +0200, Pankaj Raghav wrote:
> 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.

I don't think we can wait for 5.20 - the "offending" commit is in
5.19-rc and -stable.  So I'll plan to prepare a patch based on the model
number for now, still hoping we can come up with something better
eventually.