Re: [PATCH v2 0/3] Cleanup OA stream on PCI unbind/remove

[Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>]

Hi Matt,

Please provide your inputs primarily on patches 1 and 2.

Thanks,
Umesh

On Fri, Oct 30, 2026 at 03:30:57PM -0700, Umesh Nerlige Ramappa wrote:
>When an OA stream FD is open, removing the PCI device due to PCIe errors
>or doing an unbind causes a NPD and system reboots. While OA registers a
>fini handler with devm, the handler does not take into account active OA
>connections.
>
>Add code to quiesce OA connection on PCI remove/unbind.
>
>Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
>
>Umesh Nerlige Ramappa (3):
>  drm/xe/oa: Use the drm device address_space for the OA stream fd
>  drm/xe/oa: Gate OA buffer mmap faults
>  drm/xe/oa: Quiesce OA streams on driver unbind and PCI reset
>
> drivers/gpu/drm/xe/xe_bo.c       |  30 +++-
> drivers/gpu/drm/xe/xe_bo.h       |   4 +
> drivers/gpu/drm/xe/xe_oa.c       | 285 ++++++++++++++++++++++++++++---
> drivers/gpu/drm/xe/xe_oa_types.h |  12 ++
> 4 files changed, 300 insertions(+), 31 deletions(-)
>
>-- 
>2.55.0
>