linux-kernel - Re: [PATCH] pci: Don't call resume callback for nearly bound devices

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Message-ID: <CAP145pjO9zdGgutHP=of0H+L1=nSz097zf73i7ZYm2-NWuwHhQ@mail.gmail.com>
Date:   Tue, 9 Nov 2021 13:42:29 +0100
From:   Robert Święcki <robert@...ecki.net>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] pci: Don't call resume callback for nearly bound devices

Also, this might be unrelated, but the following happened around this
patch (ie https://github.com/torvalds/linux/commit/0c5c62ddf88c34bc83b66e4ac9beb2bb0e1887d4)

I sometimes run Win11 under qemu/kvm/vfio (gfx card), and it stopped
booting (even with the latest patch for pci). Another Linux distro
boots fine under the same qemu/kvm/vfio, but Win11 stops at the boot
screen.

It worked well with 5.15.0 and a few PRs later - with the git tip it's
not booting - and it works well with 5.15.0-rc7

Maybe related to pci/vfio changes, maybe not, just leaving it here for
track record. I'll try to debug it a bit.