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From: Eric Anholt <eric@anholt.net>
To: intel-gfx@lists.freedesktop.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: Re: [PATCH 10/11] drm/i915: bind objects to the global gtt only when needed
Date: Mon, 28 Nov 2011 17:55:58 -0800	[thread overview]
Message-ID: <87fwh74rpt.fsf@eliezer.anholt.net> (raw)
In-Reply-To: <1322515495-13049-3-git-send-email-daniel.vetter@ffwll.ch>


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On Mon, 28 Nov 2011 22:24:54 +0100, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> And track the existence of such a binding similar to the aliasing
> ppgtt case. Speeds up binding/unbinding in the common case where we
> only need a ppgtt binding (which is accessed in a cpu coherent fashion
> by the gpu) and no gloabl gtt binding (which needs uc writes for the
> ptes).

For one month from mid-june to mid-july, Mesa master was setting
I915_GEM_DOMAIN_GTT in the workaround pipe control.  That was changed to
be _INSTRUCTION, because _GTT caused kernel oopses, and query objects
had already been doing _INSTRUCTION since forever.  There are no uses of
MI_STOREs in the driver.

I'd say the minor ABI change potential in here is safe.

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  parent reply	other threads:[~2011-11-29  1:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-28 21:24 [PATCH 08/11] drm/i915: enable ppgtt Daniel Vetter
2011-11-28 21:24 ` [PATCH 09/11] drm/i915: split out dma mapping from global gtt bind/unbind functions Daniel Vetter
2011-11-28 21:24 ` [PATCH 10/11] drm/i915: bind objects to the global gtt only when needed Daniel Vetter
2011-11-28 22:32   ` [PATCH 1/3] " Daniel Vetter
2011-11-28 22:32     ` [PATCH 2/3] drm/i915: implement SNB workaround for lazy global gtt Daniel Vetter
2011-12-02 22:07       ` [PATCH] " Daniel Vetter
2011-11-28 22:32     ` [PATCH 3/3] drm/i915: enable lazy global-gtt binding Daniel Vetter
2011-11-29 11:27     ` [PATCH] drm/i915: bind objects to the global gtt only when needed Daniel Vetter
2011-11-29  1:55   ` Eric Anholt [this message]
2011-12-02 22:12     ` [PATCH 10/11] " Daniel Vetter
2011-11-28 21:24 ` [PATCH 11/11] drm/i915: add HAS_ALIASING_PPGTT parameter for userspace Daniel Vetter
2011-12-06 17:39   ` Ben Widawsky
2011-12-06 18:31     ` Chris Wilson
2011-12-06 19:59       ` Daniel Vetter
2011-11-29 12:47 ` [PATCH 08/11] drm/i915: enable ppgtt Chris Wilson
2011-11-30  0:05 ` Ben Widawsky
2011-12-02 22:19   ` Daniel Vetter

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