Re: Stability issue with jetson-tk1NIC with 5.3+

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Le ven. 5 juin 2020 à 14:12, Nicolas Chauvet <kwizart@xxxxxxxxx> a écrit :
>
> Le lun. 18 mai 2020 à 18:03, Peter Robinson <pbrobinson@xxxxxxxxx> a écrit :
> >
> > > > > FYI, I've experienced a stability issue with the jetson-tk1 NIC since
> > > > > kernel 5.3 and later.
> > > > > This is reported upstream at https://bugzilla.kernel.org/show_bug.cgi?id=206217
> > > > > To sum-up: under some "MMC and network I/O load" (dnf update or scp of
> > > > > large file), the pciport receives AER errors that are actually fatal
> > > > > to  the network interface and cannot be recovered unless a reboot.
> > > > >
> > > > > I've bisected the issue and found the commit that once reverted,
> > > > > restore a good behaviour:
> > > > > https://patchwork.ozlabs.org/project/linux-tegra/patch/20200420164304.28810-1-kwizart@xxxxxxxxx/
> > > > > I haven't experienced any other regression since then.
> > > > >
> > > > > What I would like to ask is:
> > > > > 1/ Is there any others reproducers for this issue on jetson-tk1 ?
> > > > > (issue only relevant on tegra124 SOC).
> > > > > 2/ As upstream agreed that a revert would be preferred until more
> > > > > investigation, can we consider to apply as a downstream patch until
> > > > > then ?
> > > >
> > > > I have on issues with the patch being applied.
> > > >
> > >
> > > I assume this is no issues?  I will pick it up with 5.6.14.
>
> Thanks for adding the patch in 5.6.x. I confirm that everything is
> fine here wrt PCIe ethernet on jetson-tk1
> But this patch isn't applied in master. I wish it would as the next
> target to have the patch accepted is in kernel 5.9 at this time.
Hi,

A quick follow-up on this. This patch is tracked for 5.9
https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/commit/?h=pci/tegra&id=e7b856dfcec6d3bf028adee8c65342d7035914a1

It will be possible to drop the patch after the PCI merge request is
accepted. It will also propagate to older kernel branches...

Thanks
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