linux-kernel - [PATCH v4 0/1] x86/PCI: Ignore E820 reservations for bridge windows on newer systems

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Date:   Thu, 14 Oct 2021 17:39:07 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     "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>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-acpi@...r.kernel.org,
        linux-pci@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/1] x86/PCI: Ignore E820 reservations for bridge windows on newer systems

Hi All,

Here is v4 of my patch to address the E820 reservations vs PCI host bridge
ranges issue which are causing touchpad and/or thunderbolt issues on many
different laptop models.

I believe that this is ready for merging now.

Bjorn, can you review/ack this please ?

x86/tip folks it would be ideal if you can pick this up and send it out
as a fix to Linus for 5.15. This fixes a bug which has been plaguing a
lot of users (see all the bug links in the commit msg).

Regards,

Hans


Hans de Goede (1):
  x86/PCI: Ignore E820 reservations for bridge windows on newer systems

 .../admin-guide/kernel-parameters.txt         |  6 ++++
 arch/x86/include/asm/pci_x86.h                | 10 ++++++
 arch/x86/kernel/resource.c                    |  4 +++
 arch/x86/pci/acpi.c                           | 31 +++++++++++++++++++
 arch/x86/pci/common.c                         |  6 ++++
 5 files changed, 57 insertions(+)

-- 
2.31.1