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authorEugeni Dodonov <eugeni.dodonov@intel.com>2011-12-09 17:16:37 -0800
committerKeith Packard <keithp@keithp.com>2011-12-16 08:49:59 -0800
commitf45b55575cedb7efa782e43f1ea74338456d0381 (patch)
tree187e95f183bde55b03e5c9dde8046e4dc7eabb97 /Documentation
parent7317c75e66fce0c9f82fbe6f72f7e5256b315422 (diff)
drm/i915: enable semaphores on per-device defaults
This adds a default setting for semaphores parameter, and enables semaphores by default on IVB. For now, as semaphores interaction with VTd causes random issues on SNB, we do not enable them by default. But they can still be enabled via the semaphores=1 kernel parameter. v2: enables semaphores on SNB when IO remapping is disabled, with base on Keith Packard patch. CC: Daniel Vetter <daniel.vetter@ffwll.ch> CC: Ben Widawsky <ben@bwidawsk.net> CC: Keith Packard <keithp@keithp.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Chris Wilson <chris@chris-wilson.co.uk> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42696 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=40564 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41353 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38862 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
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