linux-kernel - Re: [PATCH 0/7] PCI: Solve two bridge window sizing issues

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Message-ID: <cdda64e3-3454-406d-55a2-cf79f7650b45@linux.intel.com>
Date: Tue, 5 Mar 2024 17:37:49 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
cc: linux-pci@...r.kernel.org, Lorenzo Pieralisi <lorenzo.pieralisi@....com>, 
    Rob Herring <robh@...nel.org>, 
    Krzysztof Wilczyński <kw@...ux.com>, 
    Igor Mammedov <imammedo@...hat.com>, Lukas Wunner <lukas@...ner.de>, 
    Mika Westerberg <mika.westerberg@...ux.intel.com>, 
    Andy Shevchenko <andriy.shevchenko@...el.com>, 
    "Rafael J . Wysocki" <rafael@...nel.org>, 
    LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/7] PCI: Solve two bridge window sizing issues

On Fri, 22 Dec 2023, Ilpo Järvinen 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.

Hi Bjorn,

Can you consider applying this series or do you have some comments on it?

I'm a bit unsure these days if my emails even reach you successfully as I 
tend to often receive complaints from Gmail that it has blocked the emails 
I send with git send-email detecting them as "unsolicited mail".

-- 
 i.


> Unfortunately I don't have a reason to suspect these would help with
> the issues related to the currently ongoing resource regression
> thread [1].
> 
> [1] https://lore.kernel.org/linux-pci/ZXpaNCLiDM+Kv38H@marvin.atrad.com.au/
> 
> Ilpo Järvinen (7):
>   PCI: Fix resource double counting on remove & rescan
>   resource: Rename find_resource() to find_empty_resource_slot()
>   resource: Document find_empty_resource_slot() and resource_constraint
>   resource: Use typedef for alignf callback
>   resource: Handle simple alignment inside __find_empty_resource_slot()
>   resource: Export find_empty_resource_slot()
>   PCI: Relax bridge window tail sizing rules