Hi All, Here is v9 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. After previous attempts to identify these systems by looking for E820 reservations covering the entire bridge window, which broke the boot on some coreboot based ChromeBooks we are now back to using a bios date + DMI quirks based approach. Changes in v9: - Split making use_e820=false the default for BIOS year >= 2023 out into a separate patch - Split the addition of DMI quirks out into a separate patch - Add a DMI quirk for the TUXEDO Book XUX7 - Gen12 Changes in v8: - Change the cut-off for no longer excluding E820 reservations from the bridge window to BIOS year >= 2023 so that this only applies to upcoming systems. - Use DMI quirks for existing systems on which excluding E820 reservations from the _CRS returned bridge window is an issue. This is based on top of Bjorn's pci/resource branch: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/resource Regards, Hans Hans de Goede (3): x86/PCI: Add kernel cmdline options to use/ignore E820 reserved regions x86/PCI: Add DMI quirks to ignore E820 reserved regions on some systems x86/PCI: Ignore E820 reserved regions for bridge windows on future systems .../admin-guide/kernel-parameters.txt | 9 ++ arch/x86/include/asm/pci_x86.h | 2 + arch/x86/pci/acpi.c | 121 +++++++++++++++++- arch/x86/pci/common.c | 8 ++ 4 files changed, 138 insertions(+), 2 deletions(-) -- 2.36.0
