On 8/3/12 3:52 PM, Alex Williamson wrote:
Is this the chunk that's causing the oops?
Yes. And taking it out fixes passthrough as well. David
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 7469b53..27d8c97 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4133,6 +4133,7 @@ static int intel_iommu_add_device(struct device *dev) PCI_DEVFN(PCI_SLOT(dma_pdev->devfn), 0))); +#if 0 while (!pci_is_root_bus(dma_pdev->bus)) { if (pci_acs_path_enabled(dma_pdev->bus->self, NULL, REQ_ACS_FLAGS)) @@ -4140,6 +4141,7 @@ static int intel_iommu_add_device(struct device *dev) swap_pci_ref(&dma_pdev, pci_dev_get(dma_pdev->bus->self)); } +#endif group = iommu_group_get(&dma_pdev->dev); pci_dev_put(dma_pdev);
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