Re: [PATCH v5 0/9] Introduce Xe PCIe FLR

[Raag Jadav <raag.jadav@intel.com>]

On Fri, Apr 10, 2026 at 08:22:54PM +0200, Maarten Lankhorst wrote:
> To me the series looks ok, I don't know if anyone else has objections but might be good to at least have an ack from display.

Jani? Ville? Any input on this?

Raag

> Den 2026-04-10 kl. 16:22, skrev Raag Jadav:
> > On Mon, Apr 06, 2026 at 07:37:13PM +0530, Raag Jadav wrote:
> >> Here's my humble attempt at introducing PCIe Function Level Reset (FLR)
> >> support in xe driver. This is ofcourse a half baked implementation and
> >> only limited to re-initializing GT. This needs to be extended for a lot
> >> of different components which I've skipped here for my lack of competence,
> >> so feel free to join in and support them.
> >>
> >> PS: All xe_exec_basic tests and clpeak run smoothly after FLR. Give it
> >> a spin and let me know if any regressions.
> >>
> >> Trigger it with:
> >>
> >> $ echo 1 > /sys/bus/pci/devices/<BDF>/reset
> > Anything I can do to move this forward?
> >
> > Raag
> >
> >> v2: Re-initialize migrate context (Matthew Brost)
> >>     Add kernel doc (Matthew Brost)
> >>     Spell out Function Level Reset (Jani)
> >>
> >> v3: Cancel in-flight jobs before FLR
> >>
> >> v4: Teardown exec queues instead of mangling scheduler pending list (Matthew Brost)
> >>
> >> v5: Re-initialize kernel queues through submission backend (Matthew Brost)
> >>     Prevent PM ref leak for wedged device (Matthew Brost)
> >>
> >> Raag Jadav (9):
> >>   drm/xe/uc_fw: Allow re-initializing firmware
> >>   drm/xe/guc_submit: Introduce guc_exec_queue_reinit()
> >>   drm/xe/gt: Introduce FLR helpers
> >>   drm/xe/irq: Introduce xe_irq_disable()
> >>   drm/xe: Introduce xe_device_assert_lmem_ready()
> >>   drm/xe/bo_evict: Introduce xe_bo_restore_map()
> >>   drm/xe/exec_queue: Introduce xe_exec_queue_reinit()
> >>   drm/xe/migrate: Introduce xe_migrate_reinit()
> >>   drm/xe/pci: Introduce PCIe FLR
> >>
> >>  drivers/gpu/drm/xe/Makefile              |   1 +
> >>  drivers/gpu/drm/xe/xe_bo_evict.c         |  51 ++++++--
> >>  drivers/gpu/drm/xe/xe_bo_evict.h         |   2 +
> >>  drivers/gpu/drm/xe/xe_device.c           |  10 +-
> >>  drivers/gpu/drm/xe/xe_device.h           |   1 +
> >>  drivers/gpu/drm/xe/xe_device_types.h     |   3 +
> >>  drivers/gpu/drm/xe/xe_exec_queue.c       |  37 +++++-
> >>  drivers/gpu/drm/xe/xe_exec_queue.h       |   1 +
> >>  drivers/gpu/drm/xe/xe_exec_queue_types.h |   2 +
> >>  drivers/gpu/drm/xe/xe_gpu_scheduler.h    |   5 +
> >>  drivers/gpu/drm/xe/xe_gsc.c              |  14 ++
> >>  drivers/gpu/drm/xe/xe_gsc.h              |   1 +
> >>  drivers/gpu/drm/xe/xe_gt.c               |  47 +++++++
> >>  drivers/gpu/drm/xe/xe_gt.h               |   2 +
> >>  drivers/gpu/drm/xe/xe_gt_types.h         |   9 ++
> >>  drivers/gpu/drm/xe/xe_guc.c              |  29 ++++
> >>  drivers/gpu/drm/xe/xe_guc.h              |   2 +
> >>  drivers/gpu/drm/xe/xe_guc_submit.c       |  11 ++
> >>  drivers/gpu/drm/xe/xe_huc.c              |  14 ++
> >>  drivers/gpu/drm/xe/xe_huc.h              |   1 +
> >>  drivers/gpu/drm/xe/xe_irq.c              |  13 +-
> >>  drivers/gpu/drm/xe/xe_irq.h              |   1 +
> >>  drivers/gpu/drm/xe/xe_lrc.c              |  17 +++
> >>  drivers/gpu/drm/xe/xe_lrc.h              |   2 +
> >>  drivers/gpu/drm/xe/xe_migrate.c          |  12 ++
> >>  drivers/gpu/drm/xe/xe_migrate.h          |   1 +
> >>  drivers/gpu/drm/xe/xe_pci.c              |   1 +
> >>  drivers/gpu/drm/xe/xe_pci.h              |   2 +
> >>  drivers/gpu/drm/xe/xe_pci_err.c          | 160 +++++++++++++++++++++++
> >>  drivers/gpu/drm/xe/xe_uc.c               |  37 ++++++
> >>  drivers/gpu/drm/xe/xe_uc.h               |   2 +
> >>  drivers/gpu/drm/xe/xe_uc_fw.c            |  39 +++++-
> >>  drivers/gpu/drm/xe/xe_uc_fw.h            |   1 +
> >>  33 files changed, 510 insertions(+), 21 deletions(-)
> >>  create mode 100644 drivers/gpu/drm/xe/xe_pci_err.c
> >>
> >> -- 
> >> 2.43.0
> >>
>