Re: [PATCH 42/62] drm/i915/bdw: Implement WaSwitchSolVfFArbitrationPriority

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On Sun, Nov 03, 2013 at 09:44:56AM -0800, Ben Widawsky wrote:
> On Sun, Nov 03, 2013 at 01:07:58PM +0200, Ville Syrjälä wrote:
> > On Sat, Nov 02, 2013 at 09:07:40PM -0700, Ben Widawsky wrote:
> > > GEN8 also needs this workaround.
> > 
> > Not according to the w/a database.
> > 
> > But the register description is the same for both HSW and BDW. Also for
> > HSW, the w/a doesn't actually say whether we should set or clear the bit.
> > the default is listed to be 0, so I guess we should set it, but then
> > it's unclear why BDW wouldn't need the w/a. Once again a very poorly
> > docuemnted w/a :(
> 
> Just an FYI: all workarounds for Broadwell came from the bspec, as the
> workaround database did not exist for Broadwell at that time.
> 
> Also, I was informally told not to trust the workaround database yet.

I can't find this w/a in bspec either, not even for HSW.

-- 
Ville Syrjälä
Intel OTC
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