drm/radeon: use DMA engine for VM page table updates on SI
authorAlex Deucher <alexander.deucher@amd.com>
Mon, 22 Oct 2012 16:34:39 +0000 (12:34 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 10 Dec 2012 22:21:43 +0000 (17:21 -0500)
DMA engine has special packets to facilitate this and it also keeps
the 3D engine free for other things.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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