On Thu, 7 Jun 2018 18:52:16 +0200 David Hildenbrand <da...@redhat.com> wrote:
> Let's handle it via hotplug_handler_unplug(). E.g. necessary to hotplug/ > unplug memory devices (which a pc-dimm is) later. Perhaps something like following would be better: Factor out memory unplug into separate function from spapr_lmb_release(). Then use generic hotplug_handler_unplug() to trigger memory unplug, which would call spapr_machine_device_unplug() -> spapr_memory_unplug() in the end . This way unplug operation is not buried in lmb internals and located in the same place like in other targets, following similar logic/call chain across targets. > Signed-off-by: David Hildenbrand <da...@redhat.com> > --- > hw/ppc/spapr.c | 18 +++++++++++++++--- > 1 file changed, 15 insertions(+), 3 deletions(-) > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c > index bcb72d9fa7..0a8a3455d6 100644 > --- a/hw/ppc/spapr.c > +++ b/hw/ppc/spapr.c > @@ -3298,7 +3298,8 @@ static sPAPRDIMMState > *spapr_recover_pending_dimm_state(sPAPRMachineState *ms, > /* Callback to be called during DRC release. */ > void spapr_lmb_release(DeviceState *dev) > { > - sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_hotplug_handler(dev)); > + HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); > + sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); > sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, > PC_DIMM(dev)); > > /* This information will get lost if a migration occurs > @@ -3316,9 +3317,17 @@ void spapr_lmb_release(DeviceState *dev) > > /* > * Now that all the LMBs have been removed by the guest, call the > - * pc-dimm unplug handler to cleanup up the pc-dimm device. > + * unplug handler chain. This can never fail. > */ > - pc_dimm_memory_unplug(dev, MACHINE(spapr)); > + hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); > +} > + > +static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState > *dev) > +{ > + sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); > + sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, > PC_DIMM(dev)); > + > + pc_dimm_memory_unplug(dev, MACHINE(hotplug_dev)); > object_unparent(OBJECT(dev)); > spapr_pending_dimm_unplugs_remove(spapr, ds); > } > @@ -3589,6 +3598,9 @@ static void spapr_machine_device_plug(HotplugHandler > *hotplug_dev, > static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, > DeviceState *dev, Error **errp) > { > + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { > + spapr_memory_unplug(hotplug_dev, dev); > + } > } > > static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev,