diff options
Diffstat (limited to 'hw/vfio/pci.c')
| -rw-r--r-- | hw/vfio/pci.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 8de8272e96..d4051cb951 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1743,6 +1743,18 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size, PCI_EXP_LNKCAP_MLW | PCI_EXP_LNKCAP_SLS); } + /* + * Intel 82599 SR-IOV VFs report an invalid PCIe capability version 0 + * (Niantic errate #35) causing Windows to error with a Code 10 for the + * device on Q35. Fixup any such devices to report version 1. If we + * were to remove the capability entirely the guest would lose extended + * config space. + */ + if ((flags & PCI_EXP_FLAGS_VERS) == 0) { + vfio_add_emulated_word(vdev, pos + PCI_CAP_FLAGS, + 1, PCI_EXP_FLAGS_VERS); + } + pos = pci_add_capability(&vdev->pdev, PCI_CAP_ID_EXP, pos, size, errp); if (pos < 0) { @@ -2116,7 +2128,8 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) /* Prep dependent devices for reset and clear our marker. */ QLIST_FOREACH(vbasedev_iter, &group->device_list, next) { - if (vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) { + if (!vbasedev_iter->dev->realized || + vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) { continue; } tmp = container_of(vbasedev_iter, VFIOPCIDevice, vbasedev); @@ -2197,7 +2210,8 @@ out: } QLIST_FOREACH(vbasedev_iter, &group->device_list, next) { - if (vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) { + if (!vbasedev_iter->dev->realized || + vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) { continue; } tmp = container_of(vbasedev_iter, VFIOPCIDevice, vbasedev); @@ -2647,6 +2661,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) vdev->vbasedev.name = g_strdup(basename(vdev->vbasedev.sysfsdev)); vdev->vbasedev.ops = &vfio_pci_ops; vdev->vbasedev.type = VFIO_DEVICE_TYPE_PCI; + vdev->vbasedev.dev = &vdev->pdev.qdev; tmp = g_strdup_printf("%s/iommu_group", vdev->vbasedev.sysfsdev); len = readlink(tmp, group_path, sizeof(group_path)); |