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Date: Thu, 4 Jan 2024 22:48:52 +1030
From: Jonathan Woithe <jwoithe@just42.net>
To: Igor Mammedov <imammedo@redhat.com>
Cc: Ilpo =?iso-8859-1?Q?J=E4rvinen?= <ilpo.jarvinen@linux.intel.com>,
        linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Rob Herring <robh@kernel.org>,
        Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <kw@linux.com>,
        Lukas Wunner <lukas@wunner.de>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@intel.com>,
        "Rafael J . Wysocki" <rafael@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 0/7] PCI: Solve two bridge window sizing issues
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References: <20231228165707.3447-1-ilpo.jarvinen@linux.intel.com>
 <20240104131210.71f44d4b@imammedo.users.ipa.redhat.com>
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On Thu, Jan 04, 2024 at 01:12:10PM +0100, Igor Mammedov wrote:
> On Thu, 28 Dec 2023 18:57:00 +0200
> Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> wrote:
> 
> > Hi all,
> > 
> > Here's a series that contains two fixes to PCI bridge window sizing
> > algorithm. Together, they should enable remove & rescan cycle to work
> > for a PCI bus that has PCI devices with optional resources and/or
> > disparity in BAR sizes.
> > 
> > For the second fix, I chose to expose find_empty_resource_slot() from
> > kernel/resource.c because it should increase accuracy of the cannot-fit
> > decision (currently that function is called find_resource()). In order
> > to do that sensibly, a few improvements seemed in order to make its
> > interface and name of the function sane before exposing it. Thus, the
> > few extra patches on resource side.
> > 
> > Unfortunately I don't have a reason to suspect these would help with
> > the issues related to the currently ongoing resource regression
> > thread [1].
> 
> Jonathan,
> can you test this series on affected machine with broken kernel to see if
> it's of any help in your case?

Certainly, but it will have to wait until next Thursday (11 Jan 2024).  I'm
still on leave this week, and when at work I only have physical access to
the machine concerned on Thursdays at present.

Which kernel would you prefer I apply the series to?

Regards
  jonathan