From: Chris Wilson Date: Tue, 4 Jan 2011 18:42:07 +0000 (+0000) Subject: drm/i915: Enforce write ordering through the GTT X-Git-Tag: v2.6.38-rc1~398^2~2^2~20 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63256ec5347fb2344a42adbae732b90603c92f35;p=pandora-kernel.git drm/i915: Enforce write ordering through the GTT We need to ensure that writes through the GTT land before any modification to the MMIO registers and so must impose a mandatory write barrier when flushing the GTT domain. This was revealed by relaxing the write ordering by experimentally mapping the registers and the GATT as write-combining. Signed-off-by: Chris Wilson --- Reading git-diff-tree failed