Re: [Intel-gfx] [PATCH v5 08/35] drm/i915: Disable hardware semaphores when GPU scheduler is enabled

2016-02-19 Thread Jesse Barnes
On 02/18/2016 06:26 AM, john.c.harri...@intel.com wrote: > From: John Harrison > > Hardware sempahores require seqno values to be continuously > incrementing. However, the scheduler's reordering of batch buffers > means that the seqno values going through the hardware

[Intel-gfx] [PATCH v5 08/35] drm/i915: Disable hardware semaphores when GPU scheduler is enabled

2016-02-18 Thread John . C . Harrison
From: John Harrison Hardware sempahores require seqno values to be continuously incrementing. However, the scheduler's reordering of batch buffers means that the seqno values going through the hardware could be out of order. Thus semaphores can not be used. On the