Caps: Disable floppy disk for PowerPC VM

PowerPC pseries based VMs do not support a floppy disk controller.
This prohibits libvirt from adding floppy disk for a PowerPC pseries VM.
Signed-off-by: NKothapally Madhu Pavan <kmp@linux.vnet.ibm.com>

src/qemu/qemu_capabilities.c

@@ -3919,25 +3919,32 @@ virQEMUCapsFillDomainOSCaps(virQEMUCapsPtr qemuCaps,
 
 static int
 virQEMUCapsFillDomainDeviceDiskCaps(virQEMUCapsPtr qemuCaps,
+                                    const char *machine,
                                     virDomainCapsDeviceDiskPtr disk)
 {
     disk->device.supported = true;
     /* QEMU supports all of these */
     VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice,
                              VIR_DOMAIN_DISK_DEVICE_DISK,
-                             VIR_DOMAIN_DISK_DEVICE_CDROM,
-                             VIR_DOMAIN_DISK_DEVICE_FLOPPY);
+                             VIR_DOMAIN_DISK_DEVICE_CDROM);
+
+    /* PowerPC pseries based VMs do not support floppy device */
+    if (!(ARCH_IS_PPC64(qemuCaps->arch) && STRPREFIX(machine, "pseries")))
+        VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice, VIR_DOMAIN_DISK_DEVICE_FLOPPY);
 
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_SG_IO))
         VIR_DOMAIN_CAPS_ENUM_SET(disk->diskDevice, VIR_DOMAIN_DISK_DEVICE_LUN);
 
     VIR_DOMAIN_CAPS_ENUM_SET(disk->bus,
                              VIR_DOMAIN_DISK_BUS_IDE,
-                             VIR_DOMAIN_DISK_BUS_FDC,
                              VIR_DOMAIN_DISK_BUS_SCSI,
                              VIR_DOMAIN_DISK_BUS_VIRTIO,
                              /* VIR_DOMAIN_DISK_BUS_SD */);
 
+    /* PowerPC pseries based VMs do not support floppy device */
+    if (!(ARCH_IS_PPC64(qemuCaps->arch) && STRPREFIX(machine, "pseries")))
+        VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_FDC);
+
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_USB_STORAGE))
         VIR_DOMAIN_CAPS_ENUM_SET(disk->bus, VIR_DOMAIN_DISK_BUS_USB);
     return 0;
@@ -4008,7 +4015,7 @@ virQEMUCapsFillDomainCaps(virDomainCapsPtr domCaps,
 
     if (virQEMUCapsFillDomainOSCaps(qemuCaps, os,
                                     loader, nloader) < 0 ||
-        virQEMUCapsFillDomainDeviceDiskCaps(qemuCaps, disk) < 0 ||
+        virQEMUCapsFillDomainDeviceDiskCaps(qemuCaps, domCaps->machine, disk) < 0 ||
         virQEMUCapsFillDomainDeviceHostdevCaps(qemuCaps, hostdev) < 0)
         return -1;
     return 0;