From: Joerg Roedel <[email protected]> Since devices with IOMMUv2 functionality might be in the same group as devices without it, allow those devices in IOMMUv2 domains too. Otherwise attaching the group with the IOMMUv2 device to the domain will fail.
Signed-off-by: Joerg Roedel <[email protected]> --- drivers/iommu/amd_iommu.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 89e6d4b..6d3dae9 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2164,15 +2164,17 @@ static int attach_device(struct device *dev, dev_data = get_dev_data(dev); if (domain->flags & PD_IOMMUV2_MASK) { - if (!dev_data->iommu_v2 || !dev_data->passthrough) + if (!dev_data->passthrough) return -EINVAL; - if (pdev_iommuv2_enable(pdev) != 0) - return -EINVAL; + if (dev_data->iommu_v2) { + if (pdev_iommuv2_enable(pdev) != 0) + return -EINVAL; - dev_data->ats.enabled = true; - dev_data->ats.qdep = pci_ats_queue_depth(pdev); - dev_data->pri_tlp = pci_pri_tlp_required(pdev); + dev_data->ats.enabled = true; + dev_data->ats.qdep = pci_ats_queue_depth(pdev); + dev_data->pri_tlp = pci_pri_tlp_required(pdev); + } } else if (amd_iommu_iotlb_sup && pci_enable_ats(pdev, PAGE_SHIFT) == 0) { dev_data->ats.enabled = true; @@ -2237,7 +2239,7 @@ static void detach_device(struct device *dev) __detach_device(dev_data); write_unlock_irqrestore(&amd_iommu_devtable_lock, flags); - if (domain->flags & PD_IOMMUV2_MASK) + if (domain->flags & PD_IOMMUV2_MASK && dev_data->iommu_v2) pdev_iommuv2_disable(to_pci_dev(dev)); else if (dev_data->ats.enabled) pci_disable_ats(to_pci_dev(dev)); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
