[PATCH v6 3/9] drm/xe/vf: Pause submissions during RESFIX fixups

[Michał Winiarski]

On Fri, Jul 04, 2025 at 11:02:22PM +0200, Tomasz Lis wrote:
> While applying post-migration fixups to VF, GuC will not respond
> to any commands. This means submissions have no way of finishing.
> 
> To avoid acquiring additional resources and then stalling
> on hardware access, pause the submission work. This will
> decrease the chance of depleting resources, and speed up
> the recovery.
> 
> v2: Commented xe_irq_resume() call
> v3: Typo fix
> 
> Signed-off-by: Tomasz Lis <tomasz.lis at intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Michal Winiarski <michal.winiarski at intel.com>

Might be worth for someone on the scheduler side to also take a look at
this, but for what it's worth:

Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>

-Michał

> ---
>  drivers/gpu/drm/xe/xe_gpu_scheduler.c | 13 ++++++++
>  drivers/gpu/drm/xe/xe_gpu_scheduler.h |  1 +
>  drivers/gpu/drm/xe/xe_guc_submit.c    | 35 ++++++++++++++++++++
>  drivers/gpu/drm/xe/xe_guc_submit.h    |  2 ++
>  drivers/gpu/drm/xe/xe_sriov_vf.c      | 46 +++++++++++++++++++++++++++
>  5 files changed, 97 insertions(+)