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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-04 18:42:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-11 20:42:53 +0000 |
| commit | 63256ec5347fb2344a42adbae732b90603c92f35 (patch) | |
| tree | 5b018e93f38f9e90f3b07beeaac4af08122c5876 /kernel/workqueue.c | |
| parent | drm/i915: Remove impossible test (diff) | |
| download | linux-rng-63256ec5347fb2344a42adbae732b90603c92f35.tar.xz linux-rng-63256ec5347fb2344a42adbae732b90603c92f35.zip | |
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 <chris@chris-wilson.co.uk>
Diffstat (limited to 'kernel/workqueue.c')
0 files changed, 0 insertions, 0 deletions