linux-kernel - Re: [Regression] Commit 40613da52b13 ("PCI: acpiphp: Reassign resources on bridge if necessary")

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Date: Thu, 21 Dec 2023 16:46:02 +1030
From: Jonathan Woithe <jwoithe@...t42.net>
To: Igor Mammedov <imammedo@...hat.com>
Cc: bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [Regression] Commit 40613da52b13 ("PCI: acpiphp: Reassign
 resources on bridge if necessary")

On Sat, Dec 16, 2023 at 10:05:22AM +1030, Jonathan Woithe wrote:
> On Fri, Dec 15, 2023 at 02:36:38PM +0100, Igor Mammedov wrote:
> > On Fri, 15 Dec 2023 21:57:43 +1030
> > Jonathan Woithe <jwoithe@...t42.net> wrote:
> > > As mentioned, testing another kernel can only happen next Thursday.  If
> > > you would like other tests done let me know and I'll do them at the same
> > > time.  I have remote access to the machine, so it's possible to retrieve
> > > information from it at any time.
> > 
> > lets wait till you can get logs with dyndbg='...' (I've asked for earlier)
> > and one more test with "pci=realloc" on kernel CLI to see if that helps.
> 
> Okay.

I added the "dyndbg=" option to the 5.15.139 kernel command line and booted. 
The resulting dmesg output has been attached to bugzilla 218268.

I also tested 5.15.139 with the "pci=realloc" kernel parameter.  This was
sufficient to allow the system to boot without a GPU initialisation failure.
The dmesg output from this boot has also been attached to bugzilla 218268.

I used kernel.org's 5.15.139 for these tests because I already had it
compiled and was a little short of time.  If you'd like me to repeat the
tests with a different kernel let me know which one and I'll see what I can
do.  The Christmas break may delay this somewhat.

Regards
  jonathan