diff options
Diffstat (limited to 'drivers/iommu/amd_iommu_v2.c')
| -rw-r--r-- | drivers/iommu/amd_iommu_v2.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c index dccf5b76eff2..7d94e1d39e5e 100644 --- a/drivers/iommu/amd_iommu_v2.c +++ b/drivers/iommu/amd_iommu_v2.c @@ -554,14 +554,30 @@ static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data) unsigned long flags; struct fault *fault; bool finish; - u16 tag; + u16 tag, devid; int ret; + struct iommu_dev_data *dev_data; + struct pci_dev *pdev = NULL; iommu_fault = data; tag = iommu_fault->tag & 0x1ff; finish = (iommu_fault->tag >> 9) & 1; + devid = iommu_fault->device_id; + pdev = pci_get_bus_and_slot(PCI_BUS_NUM(devid), devid & 0xff); + if (!pdev) + return -ENODEV; + dev_data = get_dev_data(&pdev->dev); + + /* In kdump kernel pci dev is not initialized yet -> send INVALID */ ret = NOTIFY_DONE; + if (translation_pre_enabled(amd_iommu_rlookup_table[devid]) + && dev_data->defer_attach) { + amd_iommu_complete_ppr(pdev, iommu_fault->pasid, + PPR_INVALID, tag); + goto out; + } + dev_state = get_device_state(iommu_fault->device_id); if (dev_state == NULL) goto out; |