commit f7d6bfcdc0fe49040aac3ac131a319cb5427957e
author Greg Kurz <groug@kaod.org> Thu Oct 12 18:30:14 2017 +0200
committer David Gibson <david@gibson.dropbear.id.au> Tue Oct 17 10:34:01 2017 +1100
tree 158661a268c3fa4d42bf2d2f8f01f962d1d2cffa
parent db50f280cf5f714e64ff2b134aae138908f07502

spapr_pci: fail gracefully with non-pseries machine types

QEMU currently crashes when the user tries to add an spapr-pci-host-bridge
on a non-pseries machine:

$ qemu-system-ppc64 -M ppce500 -device spapr-pci-host-bridge,index=1
hw/ppc/spapr_pci.c:1535:spapr_phb_realize:
Object 0x1003dacae60 is not an instance of type spapr-machine
Aborted (core dumped)

The same thing happens with the deprecated but still available child type
spapr-pci-vfio-host-bridge.

Fix both by checking the machine type with object_dynamic_cast().

Reviewed-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>