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| author | Bjorn Helgaas <bhelgaas@google.com> | 2022-05-24 16:42:22 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-05-24 16:42:22 -0500 |
| commit | f1bde2786d8e1218e40b47788f3a4929c2a3ece0 (patch) | |
| tree | 95c42ddb72da5efcdaa001217e3502cdcea7189f /Documentation | |
| parent | 6b5e9bdce6cf6e2e88b50e85aec0a2193dc69890 (diff) | |
| parent | 0ae084d5a6744b1318407d8e20fb88ac0fd85d47 (diff) | |
| download | linux-f1bde2786d8e1218e40b47788f3a4929c2a3ece0.tar.bz2 | |
Merge branch 'pci/resource'
- Clip only host bridge windows for E820 regions and log what is clipped
(Bjorn Helgaas)
- Add kernel cmdline options to use/ignore E820 reserved regions (Hans de
Goede)
- Disable E820 reserved region clipping for IdeaPads, Yoga, Yoga Slip, Acer
Spin 5, Clevo Barebone systems where clipping leaves no usable address
space for touchpads, Thunderbolt devices, etc (Hans de Goede)
- Disable E820 reserved region clipping by default starting in 2023 (Hans
de Goede)
* pci/resource:
x86/PCI: Disable E820 reserved region clipping starting in 2023
x86/PCI: Disable E820 reserved region clipping via quirks
x86/PCI: Add kernel cmdline options to use/ignore E820 reserved regions
x86/PCI: Clip only host bridge windows for E820 regions
x86: Log resource clipping for E820 regions
x86/PCI: Eliminate remove_e820_regions() common subexpressions
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 3f1cc5e317ed..2477b639d5c4 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4066,6 +4066,15 @@ please report a bug. nocrs [X86] Ignore PCI host bridge windows from ACPI. If you need to use this, please report a bug. + use_e820 [X86] Use E820 reservations to exclude parts of + PCI host bridge windows. This is a workaround + for BIOS defects in host bridge _CRS methods. + If you need to use this, please report a bug to + <linux-pci@vger.kernel.org>. + no_e820 [X86] Ignore E820 reservations for PCI host + bridge windows. This is the default on modern + hardware. If you need to use this, please report + a bug to <linux-pci@vger.kernel.org>. routeirq Do IRQ routing for all PCI devices. This is normally done in pci_enable_device(), so this option is a temporary workaround |