Re: [PATCH] drm/i915/guc: Report error on invalid reset notification

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On Wed, Dec 22, 2021 at 05:31:28PM -0800, John.C.Harrison@xxxxxxxxx wrote:
> From: John Harrison <John.C.Harrison@xxxxxxxxx>
> 
> Don't silently drop reset notifications from the GuC. It might not be
> safe to do an error capture but we still want some kind of report that
> the reset happened.
> 
> Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> index e7517206af82..0fbf24b8d5e1 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> @@ -3979,6 +3979,11 @@ static void guc_handle_context_reset(struct intel_guc *guc,
>  		   !context_blocked(ce))) {
>  		capture_error_state(guc, ce);
>  		guc_context_replay(ce);
> +	} else {
> +		drm_err(&guc_to_gt(guc)->i915->drm,
> +			"Invalid GuC engine reset notificaion for 0x%04X on %s: banned = %d, blocked = %d",
> +			ce->guc_id.id, ce->engine->name, intel_context_is_banned(ce),
> +			context_blocked(ce));

As discussed off the list, I'll a take an AR to see if we can not
supress the capture here. But until that gets resolved:

Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>

>  	}
>  }
>  
> -- 
> 2.25.1
> 



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