Re: [PATCH] drm/i915/icl: Remove alpha support protection

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Hi, 

> -----Original Message-----
> From: Intel-gfx [mailto:intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of
> Rodrigo Vivi
> Sent: keskiviikko 6. maaliskuuta 2019 1.22
> To: Souza, Jose <jose.souza@xxxxxxxxx>
> Cc: Nikula, Jani <jani.nikula@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx; Zanoni,
> Paulo R <paulo.r.zanoni@xxxxxxxxx>
> Subject: Re:  [PATCH] drm/i915/icl: Remove alpha support protection
> 
> On Tue, Mar 05, 2019 at 02:11:53PM -0800, José Roberto de Souza wrote:
> > Now with the watermarks fixes merged, Icelake is stable enough to have
> > the alpha support protection flag removed.
> >
> > We have a few ICL machines in our CI and it is mostly green with
> > failures in tests that will not impact future linux installations.
> > Also there is no warnings, errors, flickering or any visual defects
> > while doing ordinary tasks like browsing and editing documents in a
> > dual monitor setup.
> >
> > As a reminder i915.alpha_support was created to protect future linux
> > installation's iso images that might contain a kernel from the
> > enabling time of the new platform. Without this protection most of
> > linux installation was recommending nomodeset option during
> > installation that was getting stick there after installation.
> >
> > Specifically, alpha support says nothing about the development state
> > of the hardware, and everything about the state of the driver in a
> > kernel release.
> >
> > This is semantically no different from the old preliminary_hw_support
> > flag, but the old one was all too often interpreted as (preliminary
> > hw) support instead of the intended
> > (preliminary) hw support, and it was misleading for everyone.
> > Hence the rename.
> >
> > Reference: https://intel-gfx-ci.01.org/tree/drm-tip/fi-icl-y.html
> 
> This view is great. It is unfortunate we cannot save this and this link will be invalid in
> few runs.
> 
> > Reference: https://intel-gfx-ci.01.org/tree/drm-tip/shard-iclb.html
> 
> This picture doesn't help, but taking your word, and the BAT results and quoting Jani
> Saarinen: "Nice improvement here what comes to passes..."
> 
> Old: f2-icl-u         total:262  pass:107  dwarn:98  dfail:0   fail:1   skip:55  time:429s
> f2-icl-u         total:263  pass:222  dwarn:9   dfail:0   fail:3   skip:29  time:339s
> 
> Old: f2-icl-y         total:262  pass:105  dwarn:98  dfail:0   fail:4   skip:54  time:430s
> f2-icl-y         total:476  pass:225  dwarn:7   dfail:0   fail:4   skip:240 time:470s
> 
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

Acked-by: Jani Saarinen <jani.saarinen@xxxxxxxxx>

> 
> > Cc: James Ausmus <james.ausmus@xxxxxxxxx>
> > Cc: Jani Saarinen <jani.saarinen@xxxxxxxxx>
> > Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
> > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> > ---
> >  drivers/gpu/drm/i915/i915_pci.c | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_pci.c
> > b/drivers/gpu/drm/i915/i915_pci.c index c42c5ccf38fe..527bd1ceb9ac
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_pci.c
> > +++ b/drivers/gpu/drm/i915/i915_pci.c
> > @@ -658,7 +658,6 @@ static const struct intel_device_info
> > intel_cannonlake_info = {  static const struct intel_device_info
> intel_icelake_11_info = {
> >  	GEN11_FEATURES,
> >  	PLATFORM(INTEL_ICELAKE),
> > -	.is_alpha_support = 1,
> >  	.engine_mask =
> >  		BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2),  };
> > --
> > 2.21.0
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> _______________________________________________
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
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