| commit | 6fbcfb3e467adb414e235eeefaeaf51ad12f2461 | [log] [tgz] |
|---|---|---|
| author | David Woodhouse <dwmw2@infradead.org> | Sun Sep 25 19:11:14 2011 -0700 |
| committer | David Woodhouse <David.Woodhouse@intel.com> | Fri Oct 14 20:51:44 2011 +0100 |
| tree | 57729514619945cb1480d9cfa7120de364ddc067 | |
| parent | 3e7abe2556b583e87dabda3e0e6178a67b20d06f [diff] |
intel-iommu: Workaround IOTLB hang on Ironlake GPU To work around a hardware issue, we have to submit IOTLB flushes while the graphics engine is idle. The graphics driver will (we hope) go to great lengths to ensure that it gets that right on the affected chipset(s)... so let's not screw it over by deferring the unmap and doing it later. That wouldn't be very helpful. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>