linux-kernel - Re: [PATCH v5 1/2] x86/PCI: Ignore E820 reservations for bridge windows on newer systems

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Message-ID: <958106af-e5ae-af6a-478d-c1eaef8e1498@iki.fi>
Date:   Wed, 10 Nov 2021 23:51:31 +0200
From:   Thomas Backlund <tmb@....fi>
To:     Hans de Goede <hdegoede@...hat.com>,
        Bjorn Helgaas <helgaas@...nel.org>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Myron Stowe <myron.stowe@...hat.com>,
        Juha-Pekka Heikkila <juhapekka.heikkila@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, linux-acpi@...r.kernel.org,
        linux-pci@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        Benoit Grégoire <benoitg@...us.ca>,
        Hui Wang <hui.wang@...onical.com>, stable@...r.kernel.org,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH v5 1/2] x86/PCI: Ignore E820 reservations for bridge
 windows on newer systems

Den 2021-11-10 kl. 15:05, skrev Hans de Goede:

> 
> So I've discussed this with the Fedora kernel maintainers and they have
> agreed to add the patch to the Fedora 5.15 kernels, which we will ask
> our users to start testing soon (we first run some voluntary testing
> before eventually moving all users over).
> 
> This will provide us with valuable feedback wrt this patch causing
> regressions as you are worried about, or not.
> 
> Assuming no regressions show up I hope that this will give you
> some assurance that there the patch causes no regressions and that
> you will then be willing to pick this up later during the 5.16
> cycle so that Fedora only deviates from upstream for 1 cycle.
> 

FWIW... As an extra data point...

I've backported this one on top of 5.14.14 in Mageia Cauldron and Mageia 
8 backports where it has been in active use for ~3 weeks now, and so far 
no reports of systems breaking ...

--
Thomas