When the root cause will be discovered, we should allow both of course. But so far, all the attempts on this weren't successful. -- Eugeni Dodonov <http://eugeni.dodonov.net/> --bcaec54306ded2a5b704b258e725 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div class=3D"gmail_quote">On Tue, Nov 22, 2011 at 18:15, Matthew Garrett <= span dir=3D"ltr"><<a href=3D"mailto:mjg at redhat.com">mjg at redhat.com</a>&g= t;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0= .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div class=3D"im">On Fri, Nov 18, 2011 at 10:41:29PM -0800, Keith Packard w= rote:<br> <br> > + =A0 =A0 /*<br> > + =A0 =A0 =A0* Only enable RC6 if all dma remapping is disabled, or if= <br> > + =A0 =A0 =A0* there's no iommu present in the machine.<br> > + =A0 =A0 =A0*/<br> > + =A0 =A0 if (INTEL_INFO(dev)->gen =3D=3D 6)<br> > + =A0 =A0 =A0 =A0 =A0 =A0 return no_iommu || dmar_disabled;<br> <br> </div>So the user has to choose between 5W of power saving or having dmar? = And<br> we default to giving them dmar?</blockquote><div><br>From the latest invest= igations, it is either this, or random gpu hangs and crashes when both are = enabled :(.<br><br>When the root cause will be discovered, we should allow = both of course. But so far, all the attempts on this weren't successful= .<br clear=3D"all"> </div></div><br>-- <br>Eugeni Dodonov<a href=3D"http://eugeni.dodonov.net/"= target=3D"_blank"><br></a><br> --bcaec54306ded2a5b704b258e725--
