[PATCH v16 05/13] s390x/pci: Allow plugging SR-IOV devices

[Akihiko Odaki <akihiko.odaki@daynix.com>]

The guest cannot use VFs due to the lack of multifunction support but
can use PFs.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 hw/s390x/s390-pci-bus.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 1a620f5b2a04..eab9a4f97830 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -974,7 +974,14 @@ static void s390_pcihost_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
         PCIDevice *pdev = PCI_DEVICE(dev);
 
-        if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
+        /*
+         * Multifunction is not supported due to the lack of CLP. However,
+         * do not check for multifunction capability for SR-IOV devices because
+         * SR-IOV devices automatically add the multifunction capability whether
+         * the user intends to use the functions other than the PF.
+         */
+        if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION &&
+            !pdev->exp.sriov_cap) {
             error_setg(errp, "multifunction not supported in s390");
             return;
         }

-- 
2.46.0