Re: [Intel-gfx] [PATCH 22/30] drm/i915: Remove logical HW ID

2019-10-02 Thread Tvrtko Ursulin
On 02/10/2019 12:19, Chris Wilson wrote: With the introduction of ctx->engines[] we allow multiple logical contexts to be used on the same engine (e.g. with virtual engines). According to bspec, aach logical context requires a unique tag in order for context-switching to occur correctly between

[Intel-gfx] [PATCH 22/30] drm/i915: Remove logical HW ID

2019-10-02 Thread Chris Wilson
With the introduction of ctx->engines[] we allow multiple logical contexts to be used on the same engine (e.g. with virtual engines). According to bspec, aach logical context requires a unique tag in order for context-switching to occur correctly between them. [Simple experiments show that it is