Quirk Intel PCH root ports for ACS-like features
Status from this message: I applied these (with Don's ack for 3/3) to pci/virtualization.
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v2 Latest3 patches 4 repliesApplied
- v12 patches 5 repliesSuperseded
Changes in v2 from the cover letter
- Remove bus #0 bug in filtering matching
- Add 2/3 introducing PCI_DEV_FLAGS_ACS_ENABLED_QUIRK, this gives is better tracking and addresses the theoretical hotplug issue
- Update 3/3 for PCI_DEV_FLAGS_ACS_ENABLED_QUIRK
- Add dev_info to print regardless of whether we changes bits
- Add Intel cc
Patches in v2 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | pci: Add device specific PCI ACS enabledrivers/ drivers/ include/ | +47 | 0 replies | |
| 2/3 | pci: Add pci_dev_flag for ACS enable quirksinclude/ | +2 | 0 replies | |
| 3/3 | pci/quirks: Enable quirks for PCIe ACS on Intel PCH root portsdrivers/ | +160 | 1 reply |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v2 yet.
Cover letter [PATCH v2 0/3] Quirk Intel PCH root ports for ACS-like features
v2:
- Remove bus #0 bug in filtering matching
- Add 2/3 introducing PCI_DEV_FLAGS_ACS_ENABLED_QUIRK, this gives is better tracking and addresses the theoretical hotplug issue
- Update 3/3 for PCI_DEV_FLAGS_ACS_ENABLED_QUIRK
- Add dev_info to print regardless of whether we changes bits
- Add Intel cc
As described in 3/3 many Intel root ports lack PCIe ACS capabilities which results in excessively large IOMMU groups. Many of these root ports do provide isolation capabilities, we just need to use device specific mechanisms to enable and verify. Long term, I hope we can round out this list (particularly to include X79 root ports) and more importantly, encourage proper PCIe ACS support in future products. I'm really hoping we can get this in during the 3.14 cycle. Thanks,
Alex
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Alex Williamson (3):
pci: Add device specific PCI ACS enable
pci: Add pci_dev_flag for ACS enable quirks pci/quirks: Enable quirks for PCIe ACS on Intel PCH root ports
drivers/pci/pci.c | 26 +++++-- drivers/pci/quirks.c | 185 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 4 + 3 files changed, 209 insertions(+), 6 deletions(-)