23 Nov
2011
23 Nov
'11
3:41 p.m.
On Wed, Nov 23, 2011 at 03:03:43PM +0000, David Woodhouse wrote:
On Wed, 2011-11-23 at 15:39 +0100, Daniel Vetter wrote:
At least for the dmar+gfx+semaphores hang I can reproduce, just disabling dmar with intel_iommu=igfx_off is not good enough and iirc the same holds for the dmar+rc6 hangs reported.
Um... let me restate that for clarity (and partly for Rajesh's benefit).
The DMAR associated with the integrated graphics is *disabled*. Turned off. Not active. Ever.
Hm, that comment confuses me a bit. I've always thought that igfx_off only instantiates a identity mapping and leaves the dmar unit on. Is that wrong? -Daniel
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Daniel Vetter
Mail: daniel@ffwll.ch
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