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conf: nodedev: Update PCI mdev capabilities dynamically
Just like SRIOV, a PCI device is only capable of the mediated devices framework when it's bound to the vendor native driver, thus if a driver change occurs, e.g. vendor_native->vfio, we need to refresh some of the device's capabilities to reflect the reality, mdev included. Signed-off-by: Erik Skultety <eskultet@redhat.com> Suggested-by: Wu Zongyong <cordius.wu@huawei.com> Signed-off-by: Erik Skultety <eskultet@redhat.com>
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@ -2758,6 +2758,34 @@ virNodeDeviceGetPCIIOMMUGroupCaps(virNodeDevCapPCIDevPtr pci_dev)
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}
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static int
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virNodeDeviceGetPCIMdevTypesCaps(const char *sysfspath,
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virNodeDevCapPCIDevPtr pci_dev)
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{
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virMediatedDeviceTypePtr *types = NULL;
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int rc = 0;
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size_t i;
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/* this could be a refresh, so clear out the old data */
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for (i = 0; i < pci_dev->nmdev_types; i++)
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virMediatedDeviceTypeFree(pci_dev->mdev_types[i]);
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VIR_FREE(pci_dev->mdev_types);
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pci_dev->nmdev_types = 0;
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pci_dev->flags &= ~VIR_NODE_DEV_CAP_FLAG_PCI_MDEV;
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rc = virPCIGetMdevTypes(sysfspath, &types);
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if (rc <= 0)
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return rc;
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VIR_STEAL_PTR(pci_dev->mdev_types, types);
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pci_dev->nmdev_types = rc;
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pci_dev->flags |= VIR_NODE_DEV_CAP_FLAG_PCI_MDEV;
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return 0;
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}
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/* virNodeDeviceGetPCIDynamicCaps() get info that is stored in sysfs
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* about devices related to this device, i.e. things that can change
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* without this device itself changing. These must be refreshed
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@ -2768,9 +2796,9 @@ int
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virNodeDeviceGetPCIDynamicCaps(const char *sysfsPath,
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virNodeDevCapPCIDevPtr pci_dev)
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{
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if (virNodeDeviceGetPCISRIOVCaps(sysfsPath, pci_dev) < 0)
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return -1;
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if (virNodeDeviceGetPCIIOMMUGroupCaps(pci_dev) < 0)
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if (virNodeDeviceGetPCISRIOVCaps(sysfsPath, pci_dev) < 0 ||
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virNodeDeviceGetPCIIOMMUGroupCaps(pci_dev) < 0 ||
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virNodeDeviceGetPCIMdevTypesCaps(sysfsPath, pci_dev) < 0)
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return -1;
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return 0;
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}
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