[PATCH 2/2] qemu: hotplug: Setup host side of VDPA device for disk hotplug

[Peter Krempa <pkrempa@xxxxxxxxxx>]

The code which opens the VDPA device and prepares it for FD passing was
not called in the hotplug code path, preventing hotplug of VDPA disks
with:

 error: internal error: argument key 'path' must not have null value

Use the new helper qemuProcessPrepareHostStorageDisk to setup the VDPA
definition.

Closes: https://gitlab.com/libvirt/libvirt/-/issues/539
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_hotplug.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 1f7f5bdd26..fec7c4be4e 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1007,6 +1007,9 @@ qemuDomainAttachDeviceDiskLiveInternal(virQEMUDriver *driver,
     if (qemuDomainDetermineDiskChain(driver, vm, disk, NULL) < 0)
         goto cleanup;

+    if (qemuProcessPrepareHostStorageDisk(vm, disk) < 0)
+        goto cleanup;
+
     if (qemuHotplugAttachManagedPR(vm, disk->src, VIR_ASYNC_JOB_NONE) < 0)
         goto cleanup;

-- 
2.41.0