From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 38800] glXSwapBuffersMscOML is slow on AMD Fusion but not on
Intel 945 w/Atom
Date: Fri, 8 Jul 2011 07:17:59 -0700 (PDT)
Message-ID: <20110708141759.5C85813004F@annarchy.freedesktop.org>
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https://bugs.freedesktop.org/show_bug.cgi?id=38800
--- Comment #44 from Simon Farnsworth 2011-07-08 07:17:59 PDT ---
Created an attachment (id=48898)
View: https://bugs.freedesktop.org/attachment.cgi?id=48898
Review: https://bugs.freedesktop.org/review?bug=38800&attachment=48898
The register access guards patch as applied by hand
Michel's register guards patch didn't apply cleanly to the drm-fixes kernel I'm
using; the attached is what I ended up running with.
I can confirm that it fixes this bug.
Michel, there's one change I've made that's beyond what you did: in the old
pageflip function, the ring lock and unlock pair were needed to emit the fence
to hardware. In your version, where the fence isn't emitted, you don't need the
ring lock/unlock pair.
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