On Fri, Oct 16, 2015 at 06:06:09PM +0300, Ville Syrjälä wrote:
> On Thu, Oct 08, 2015 at 01:39:56PM +0100, Chris Wilson wrote:
> > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
> > b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > index 49aa52440db2..0eaaab92dea0 100644
> > --- a/drivers/gpu/dr
On Thu, Oct 08, 2015 at 01:39:56PM +0100, Chris Wilson wrote:
> Ringbuffers are now being written to either through LLC or WC paths, so
> treating them as simply iomem is no longer adequate. However, for the
> older !llc hardware, the hardware is documentated as treating the TAIL
> register update
Ringbuffers are now being written to either through LLC or WC paths, so
treating them as simply iomem is no longer adequate. However, for the
older !llc hardware, the hardware is documentated as treating the TAIL
register update as serialising, so we can relax the barriers when filling
the rings (b
