On Thu, Jan 04, 2024 at 10:48:53PM +1030, Jonathan Woithe wrote: > 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? I was very short of time today but I did apply the above series to the 5.15.y branch (since I had this source available), resulting in version 5.15.141+. Unfortunately, in the rush I forgot to do a clean after the bisect reset, so the resulting kernel was not correctly built. It booted but thought it was a different version and therefore none of the modules could be found. As a result, the test is invalid. I will try again in a week when I next have physical access to the system. Apologies for the delay. In the meantime, if there's a specific kernel I should apply the patch series against please let me know. As I understand it, you want it applied to one of the kernels which failed, making 5.15.y (for y < 145) a reasonable choice. Regards jonathan
