* On 19.01.2013 05:13 PM, Mihai Moldovan wrote: > * On 19.01.2013 02:27 PM, Daniel Vetter wrote: >> You have a gen4.5 chipset which is known to be utterly broken for >> IOMMU+intel gpu. > Nice description for what I'm seeing. ;) > > After some more hours of uptime I'm inclined to say, that "intel_iommu=off > iommu=off" fixes my random freezes as well. > Alas, the USB and PCI(e) problems are still around, but I could test recompiling > 3.7.2 with Intel IOMMU turned off completely in the kernel config. > Interestingly, my 3.0.2 kernel which worked fine for so long doesn't even *have* > support for VT-d/Intel IOMMU. This could explain why I wasn't bit by those > problems on all previous versions. > > >> [...] and we've never added the proper >> quirks. See https://bugzilla.kernel.org/show_bug.cgi?id=51921 for a >> proposed patch to fix this (i.e. automatically set >> intel_iommu=igfx_off for affected platfroms). Testing highly welcome. > From a quick glance, I don't think this patch will work as-is, my PCI ID 2e12 is > missing. > [...] Which of course will work, as 2e10 is my DRAM controller as reported by lspci, sorry. But, shouldn't the "DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2eXX, quirk_iommu_rwbf);" calls be rather " DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e00, quirk_iommu_g4x_gfx);" ? The current patch errors out on my while compiling as quirk_iommu_rwbf is not yet defined at that place.
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