diff mbox series

[PULL,06/41] s390x/pci: Allow plugging SR-IOV devices

Message ID d966250e93c1194c0a4c775e08a8e23f2ef66cf8.1740140520.git.mst@redhat.com (mailing list archive)
State New
Headers show
Series [PULL,01/41] docs/about: Change notes on x86 machine type deprecation into a general one | expand

Commit Message

Michael S. Tsirkin Feb. 21, 2025, 12:22 p.m. UTC 
From: 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>
Message-Id: <20250116-reuse-v20-4-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.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 8c5eb69f7d..c396d55c72 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;
         }