From: Ben Widawsky <ben@bwidawsk.net>
To: ville.syrjala@linux.intel.com
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Fix context size calculation on SNB/IVB/VLV
Date: Thu, 22 Aug 2013 12:05:31 -0700 [thread overview]
Message-ID: <20130822190530.GD7181@bwidawsk.net> (raw)
In-Reply-To: <1377188593-6881-1-git-send-email-ville.syrjala@linux.intel.com>
On Thu, Aug 22, 2013 at 07:23:13PM +0300, ville.syrjala@linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> All the different context sizes reported in the CXT_SIZE register
> aren't meant to be simply added together.
>
> While BSpec is somewhat unclear on the topic of the actual context
> size, empirical tests have now revealed the truth. So let's add a
> big fat comment to remind people how it all works.
>
> As a result of correctly interpreting CXT_SIZE, the IVB context
> size is reduced from three pages to two, while SNB context size
> remains at two pages.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
[snip]
--
Ben Widawsky, Intel Open Source Technology Center
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next prev parent reply other threads:[~2013-08-22 19:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-22 16:23 [PATCH] drm/i915: Fix context size calculation on SNB/IVB/VLV ville.syrjala
2013-08-22 18:30 ` Ben Widawsky
2013-08-22 18:45 ` Ville Syrjälä
2013-08-22 18:52 ` Ville Syrjälä
2013-08-22 18:58 ` Ben Widawsky
2013-08-23 9:54 ` Ville Syrjälä
2013-08-22 19:05 ` Ben Widawsky [this message]
2013-08-22 20:16 ` Daniel Vetter
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