From: Keith Packard <keithp@keithp.com>
To: Eric Anholt <eric@anholt.net>,
Chris Wilson <chris@chris-wilson.co.uk>,
intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 2/2] drm/i915: Disable page-faults around the fast pwrite/pread paths
Date: Sun, 10 Jul 2011 13:29:02 -0700 [thread overview]
Message-ID: <yunaaclg9rl.fsf@aiko.keithp.com> (raw)
In-Reply-To: <87ei1ydlfa.fsf@eliezer.anholt.net>
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On Sun, 10 Jul 2011 11:45:29 -0700, Eric Anholt <eric@anholt.net> wrote:
> That means that I can't give users of GL pointers to GTT mappings for
> the buffer mapping API, because then I'd have to check in userland
> whether the pointer they give me for other API entrypoints is to a known
> GTT mapping before doing a pread into it. And then I imagine cross-API
> interactions and shudder.
Yeah, it clearly has to work; it's not clear how fast it needs to
be. However, if we get the prefaulting stuff fixed, we should still be
able to hit the fast path most of the time.
--
keith.packard@intel.com
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next prev parent reply other threads:[~2011-07-10 20:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-09 8:38 [PATCH 1/2] drm/i915: Prefault all pages for pread and pwrite Chris Wilson
2011-07-09 8:38 ` [PATCH 2/2] drm/i915: Disable page-faults around the fast pwrite/pread paths Chris Wilson
2011-07-09 14:41 ` Eric Anholt
2011-07-09 17:40 ` Chris Wilson
2011-07-09 20:24 ` Keith Packard
2011-07-09 20:50 ` Chris Wilson
2011-07-09 21:06 ` Keith Packard
2011-07-09 21:23 ` Chris Wilson
2011-07-09 22:07 ` Keith Packard
2011-07-11 16:51 ` Chris Wilson
2011-07-11 19:55 ` Keith Packard
2011-07-10 18:45 ` Eric Anholt
2011-07-10 20:29 ` Keith Packard [this message]
2011-07-09 20:21 ` [PATCH 1/2] drm/i915: Prefault all pages for pread and pwrite Keith Packard
2011-07-09 20:31 ` Chris Wilson
2011-07-10 1:40 ` Ben Widawsky
2011-07-10 8:08 ` Chris Wilson
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