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* [PATCH v3 i-g-t 0/7] PCI driver helpers and xe-vfio-pci FLR improvement
@ 2026-02-04 16:32 Marcin Bernatowicz
  2026-02-04 16:32 ` [PATCH v3 i-g-t 1/7] lib/igt_sriov_device: Add helper to get VF PCI slot address Marcin Bernatowicz
                   ` (10 more replies)
  0 siblings, 11 replies; 23+ messages in thread
From: Marcin Bernatowicz @ 2026-02-04 16:32 UTC (permalink / raw)
  To: igt-dev; +Cc: Marcin Bernatowicz

This series improves PCI driver management infrastructure in IGT
and updates the xe_sriov_flr test to rely on xe-vfio-pci FLR semantics.

It introduces generic PCI driver helpers for driver_override handling
and explicit bind/unbind operations.
Adds a small SR-IOV utility to resolve VF PCI slot addresses.
Fixes igt_kmod PCI bind/unbind logic to correctly handle module vs driver
name mismatches (e.g. xe_vfio_pci vs xe-vfio-pci), marking those helpers
as deprecated in favor of driver-level APIs.

The xe_sriov_flr test is updated to attach VFs to xe-vfio-pci
before initiating FLR, allowing the test to wait for FLR completion
via the driver.

V3 -> V2:
- Add --wait-flr-ms option to configure post FLR sleep time
- Add --no-xe-vfio-pci option to skip xe-vfio-pci load
- Skip xe-vfio-pci load/bind when IOMMU is off

V2 -> V1:
- Add igt_pci_get_bound_driver_name() to query the currently bound PCI
  driver via the /sys/bus/pci/devices/<BDF>/driver symlink.
- Extend igt_pci_bind_driver_override() and
  igt_pci_unbind_driver_override() with a timeout_ms parameter so callers
  can wait for bind/unbind to actually complete, instead of relying on
  drivers_probe write success. drivers_probe only initiates an async
  reprobe, so a successful write does not mean bind/unbind succeeded -
  verify the effective bound driver with a timeout.
- Unbind VFs only if they were successfully bound.

Marcin Bernatowicz (7):
  lib/igt_sriov_device: Add helper to get VF PCI slot address
  lib/igt_pci: Add generic PCI driver override and bind/unbind helpers
  tests/intel/xe_sriov_flr: Attach VFs to xe-vfio-pci before initiating
    FLR
  lib/igt_kmod: Fix PCI bind/unbind for module/driver name mismatch
  tests/intel/xe_sriov_flr: Add --wait-flr-ms option
  tests/intel/xe_sriov_flr: Add --no-xe-vfio-pci option
  tests/intel/xe_sriov_flr: Skip xe-vfio-pci load/bind when IOMMU is off

 lib/igt_kmod.c             |  90 +++++-----
 lib/igt_pci.c              | 351 +++++++++++++++++++++++++++++++++++++
 lib/igt_pci.h              |  13 +-
 lib/igt_sriov_device.c     |  25 +++
 lib/igt_sriov_device.h     |   1 +
 tests/intel/xe_sriov_flr.c | 147 +++++++++++++++-
 6 files changed, 585 insertions(+), 42 deletions(-)

-- 
2.43.0


^ permalink raw reply	[flat|nested] 23+ messages in thread

end of thread, other threads:[~2026-02-11 11:21 UTC | newest]

Thread overview: 23+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-02-04 16:32 [PATCH v3 i-g-t 0/7] PCI driver helpers and xe-vfio-pci FLR improvement Marcin Bernatowicz
2026-02-04 16:32 ` [PATCH v3 i-g-t 1/7] lib/igt_sriov_device: Add helper to get VF PCI slot address Marcin Bernatowicz
2026-02-04 16:32 ` [PATCH v3 i-g-t 2/7] lib/igt_pci: Add generic PCI driver override and bind/unbind helpers Marcin Bernatowicz
2026-02-09 10:16   ` Laguna, Lukasz
2026-02-10 10:19     ` Bernatowicz, Marcin
2026-02-11  6:39       ` Laguna, Lukasz
2026-02-11 11:21         ` Bernatowicz, Marcin
2026-02-04 16:32 ` [PATCH v3 i-g-t 3/7] tests/intel/xe_sriov_flr: Attach VFs to xe-vfio-pci before initiating FLR Marcin Bernatowicz
2026-02-09 10:17   ` Laguna, Lukasz
2026-02-04 16:32 ` [PATCH v3 i-g-t 4/7] lib/igt_kmod: Fix PCI bind/unbind for module/driver name mismatch Marcin Bernatowicz
2026-02-04 16:32 ` [PATCH v3 i-g-t 5/7] tests/intel/xe_sriov_flr: Add --wait-flr-ms option Marcin Bernatowicz
2026-02-09 10:18   ` Laguna, Lukasz
2026-02-04 16:32 ` [PATCH v3 i-g-t 6/7] tests/intel/xe_sriov_flr: Add --no-xe-vfio-pci option Marcin Bernatowicz
2026-02-09 10:18   ` Laguna, Lukasz
2026-02-04 16:32 ` [PATCH v3 i-g-t 7/7] tests/intel/xe_sriov_flr: Skip xe-vfio-pci load/bind when IOMMU is off Marcin Bernatowicz
2026-02-09 10:42   ` Laguna, Lukasz
2026-02-10 11:23     ` Bernatowicz, Marcin
2026-02-11  6:43       ` Laguna, Lukasz
2026-02-04 18:27 ` ✓ Xe.CI.BAT: success for PCI driver helpers and xe-vfio-pci FLR improvement (rev3) Patchwork
2026-02-04 18:41 ` ✓ i915.CI.BAT: " Patchwork
2026-02-05  5:02 ` ✗ Xe.CI.FULL: failure " Patchwork
2026-02-05 10:13   ` Bernatowicz, Marcin
2026-02-05  8:13 ` ✓ i915.CI.Full: success " Patchwork

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