Re: [PATCH v2 0/7] PCI: Solve two bridge window sizing issues

From: Jonathan Woithe
Date: Thu Jan 04 2024 - 07:25:14 EST


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@xxxxxxxxxxxxxxx> 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