[Intel-gfx] [PATCH 2/2] drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write

The hardware needs some time to process the information received in the ExecList Submission Port, and expects us to don't write anything new until it has 'acknowledged' this new execlist by sending an IDLE_ACTIVE or PREEMPTED CSB event. If we do not follow this, the driver could write new data

[Intel-gfx] [PATCH 2/2] drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write

The hardware needs some time to process the information received in the ExecList Submission Port, and expects us to don't write anything new until it has 'acknowledged' this new execlist by sending an IDLE_ACTIVE or PREEMPTED CSB event. If we do not follow this, the driver could write new data

Re: [Intel-gfx] [PATCH 2/2] drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write

Quoting Chris Wilson (2017-11-18 11:25:32) > The hardware needs some time to process the information received in the > ExecList Submission Port, and expects us to don't write anything new until > it has 'acknowledged' this new execlist by sending an IDLE_ACTIVE or > PREEMPTED CSB event. > > If we

[Intel-gfx] [PATCH 2/2] drm/i915/execlists: Delay writing to ELSP until HW has processed the previous write

The hardware needs some time to process the information received in the ExecList Submission Port, and expects us to don't write anything new until it has 'acknowledged' this new execlist by sending an IDLE_ACTIVE or PREEMPTED CSB event. If we do not follow this, the driver could write new data