On Sat, Jan 19, 2013 at 5:13 PM, Mihai Moldovan <ionic at ionic.de> wrote: >> [...] 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. > I'll add it to the relevant section. The quirk matches your pci host bridge, which should have id 2e10, not the gfx, which has id 2e12. > But even if it worked, I'd still have the "box freezes randomly" issue (mostly > within 5 to 60 minutes of uptime). :( > The only way to get rid of this is disabling Intel IOMMU as a whole via kernel > parameters intel_iommu=off iommu=off. Hm, can you try enabling the related iommu quirk: diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index b9d0911..e834395 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4251,6 +4251,7 @@ static void quirk_iommu_rwbf(struct pci_dev *dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e10, quirk_iommu_rwbf); #define GGC 0x52 #define GGC_MEMORY_SIZE_MASK (0xf << 8) Cheers, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
