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s390x/pci: Allow plugging SR-IOV devices

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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>
This commit is contained in:
Akihiko Odaki 2025-01-16 18:00:55 +09:00 committed by Michael S. Tsirkin
parent b77a2778d9
commit d966250e93
1 changed files with 8 additions and 1 deletions
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9
hw/s390x/s390-pci-bus.c
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@ -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;
}