linux-kernel - [PATCH v2 0/3] x86/PCI: Log E820 clipping

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Message-Id: <20220414182252.758742-1-helgaas@kernel.org>
Date:   Thu, 14 Apr 2022 13:22:49 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Hans de Goede <hdegoede@...hat.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Myron Stowe <myron.stowe@...hat.com>,
        Juha-Pekka Heikkila <juhapekka.heikkila@...il.com>,
        Benoit Grégoire <benoitg@...us.ca>,
        Hui Wang <hui.wang@...onical.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH v2 0/3] x86/PCI: Log E820 clipping

From: Bjorn Helgaas <bhelgaas@...gle.com>

This is still work-in-progress on the issue of PNP0A03 _CRS methods that
are buggy or not interpreted correctly by Linux.

The previous try at:
  https://lore.kernel.org/r/20220304035110.988712-1-helgaas@kernel.org
caused regressions on some Chromebooks:
  https://lore.kernel.org/r/Yjyv03JsetIsTJxN@sirena.org.uk

This v2 drops the commit that caused the Chromebook regression, so it also
doesn't fix the issue we were *trying* to fix on Lenovo Yoga and Clevo
Barebones.

The point of this v2 update is to split the logging patch into (1) a pure
logging addition and (2) the change to only clip PCI windows, which was
previously hidden inside the logging patch and not well documented.

Bjorn Helgaas (3):
  x86/PCI: Eliminate remove_e820_regions() common subexpressions
  x86: Log resource clipping for E820 regions
  x86/PCI: Clip only host bridge windows for E820 regions

 arch/x86/include/asm/e820/api.h |  5 +++++
 arch/x86/kernel/resource.c      | 23 ++++++++++++++++-------
 arch/x86/pci/acpi.c             |  5 +++++
 3 files changed, 26 insertions(+), 7 deletions(-)

-- 
2.25.1