Joerg Roedel <joro@...> writes: > > Hi Tobias, > > On Thu, Dec 10, 2015 at 12:07:57AM +0100, Tobias Geiger wrote: > > It all comes down to kernel > 4.1 && iommu=on = not working here > > > > Hardware is: > > Intel DX58SO, Intel CPU i7 920... all pretty solid running for years now, > > always with iommo=on. > > > > I'd love to debug this further, just dont know how... > > Sounds like only bisecting the issue will help here. You can find an > introduction on bisecting here: > > https://git-scm.com/book/en/v2/Git-Tools-Debugging-with-Git > > Would be great if you can find the time to bisect the issue. > > Joerg > >
I can confirm this bug with kernel "4.2.0-16-generic #19-Ubuntu" on an Intel DX58SO board with a W3520 Xeon CPU. Before I was running 3.16.0 which did not lock up at boot but did have occasional DMAR issues with GPU passthrough while running a Windows 7 gues in Qemu. I don't know if the two are related. _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
