Re: [Intel-gfx] [PATCH 32/43] drm/i915/bdw: Avoid non-lite-restore preemptions

2014-08-14 Thread Daniel Vetter
On Thu, Jul 24, 2014 at 05:04:40PM +0100, Thomas Daniel wrote: > From: Oscar Mateo > > In the current Execlists feeding mechanism, full preemption is not > supported yet: only lite-restores are allowed (this is: the GPU > simply samples a new tail pointer for the context currently in > execution)

[Intel-gfx] [PATCH 32/43] drm/i915/bdw: Avoid non-lite-restore preemptions

2014-07-24 Thread Thomas Daniel
From: Oscar Mateo In the current Execlists feeding mechanism, full preemption is not supported yet: only lite-restores are allowed (this is: the GPU simply samples a new tail pointer for the context currently in execution). But we have identified an scenario in which a full preemption occurs: 1)