Re: [bugzilla-daemon@bugzilla.kernel.org: [Bug 204413] New: "PCI: Add missing link delays" causes regression on resume from suspend to ram]

Matthias Andree
2019-08-02T23:11:24Z

Am 03.08.19 um 00:08 schrieb Bjorn Helgaas:
> [+cc Mika, Rafael, linux-pci]
>
> Hi Matthias,
>
> Thanks a lot for this report!
>
> Mika, this bisected to upstream c2bf1fc212f7 ("PCI: Add missing link
> delays required by the PCIe spec").
>
> Matthias, would you mind opening a separate report for the spurious
> PME issue you mentioned with 5.2.5? Seems like we should try to
> figure that one out, too.
>
>
> ----- Forwarded message from bugzilla-daemon@bugzilla.kernel.org -----
>
> Date: Fri, 02 Aug 2019 16:26:45 +0000
> From: bugzilla-daemon@bugzilla.kernel.org
> To: bugzilla.pci@gmail.com
> Subject: [Bug 204413] New: "PCI: Add missing link delays" causes regression on resume from suspend to ram
> Message-ID: <bug-204413-193951@https.bugzilla.kernel.org/>
>
> https://bugzilla.kernel.org/show_bug.cgi?id=204413
>
Hi Bjorn,

thanks for the prompt reaction and interest in the bug. I am loathe to
file a different report /now/ because it seems that on my hardware, all
three of Linux 5.1.20, 5.2.5, 5.3-rc2 mess up I/O (disk/net) in the same
way (which is the big thing), only 5.1.20 remains mute and 5.2.5 and
5.3-rc2 log the PME IRQ storms from the AMD PCI bridge at 0000:00:01.3
which might just be another consequence.

Let's see if you/Mika can figure out what the AMD B350/X370 chipsets
need to be catered for with WRT PCI link delays/handling when waking up
from STR and I'll happily see if that fixes the IRQ storm, or else file
that 2nd bug report.

Regards,
Matthias