diff mbox series

[v17,05/14] s390x/pci: Allow plugging SR-IOV devices

Message ID 20241022-reuse-v17-5-bd7c133237e4@daynix.com (mailing list archive)
State New
Headers show
Series hw/pci: SR-IOV related fixes and improvements | expand

Commit Message

Akihiko Odaki Oct. 22, 2024, 8:36 a.m. UTC 
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 mbox series

Patch

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index f06df757a34b..0c8866f8298d 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;
         }