This series is based on patches from Michel Roth posted in 2015: https://lists.gnu.org/archive/html/qemu-devel/2015-04/msg04246.html
It addresses comments made during the RFC review, and also provides a bunch of preliminary cleanup/fix patches. Since we have reached hard-freeze, this feature is provided by a new pseries-2.11 machine type, introduced by this series. It is based on David Gibson's ppc-for-2.10 branch, and I believe some of the preliminary fixes are eligible for 2.10. Note that it also requires an updated SLOF that supports a new private hcall: KVMPPC_H_UPDATE_PHANDLE. This is needed because SLOF changes FDT phandles to Open Firmware phandles. Since the guest only sees the latter, QEMU must use the updated value when populating the FDT for the hotplugged PHB (otherwise the guest can't setup IRQs for the PCI devices). SLOF part is already upstream: http://git.qemu.org/?p=SLOF.git;h=604d28cc3f791657414f8b21103921fa0147fc63 With these patches we support the following: (qemu) device_add spapr-pci-host-bridge,index=2,id=phb2 (qemu) device_add virtio-net-pci,id=hp2.0,bus=phb2.0 (qemu) device_del hp2.0 (qemu) device_del phb2 I could run some successful tests with a fedora25 guest: - hotplug PHB + migrate + unplug PHB - hotplug PHB + hotplug PCI device + unplug PHB => PCI device gets unplugged - migrate before OS starts + hotplug PHB => destination uses OF phandles - no regression observed with older machine types All the patches are also available here: https://github.com/gkurz/qemu/commits/spapr-hotplug-phb Cheers, -- Greg --- Greg Kurz (14): spapr: move spapr_create_phb() to core machine code spapr_pci: use memory_region_add_subregion() with DMA windows spapr_iommu: use g_strdup_printf() instead of snprintf() spapr_drc: use g_strdup_printf() instead of snprintf() spapr_iommu: convert TCE table object to realize() spapr_pci: parent the MSI memory region to the PHB spapr_drc: fix realize and unrealize spapr_drc: add unrealize method to physical DRC class spapr_iommu: unregister vmstate at unrealize time spapr: add pseries-2.11 machine type spapr_pci: introduce drc_id property spapr: allow guest to update the XICS phandle spapr_pci: drop abusive sanity check when migrating the LSI table spapr: add hotplug hooks for PHB hotplug Michael Roth (11): spapr_drc: pass object ownership to parent/owner spapr_iommu: pass object ownership to parent/owner pci: allow cleanup/unregistration of PCI buses qdev: store DeviceState's canonical path to use when unparenting spapr_pci: add PHB unrealize spapr: enable PHB hotplug for pseries-2.11 spapr: create DR connectors for PHBs spapr_events: add support for phb hotplug events qdev: pass an Object * to qbus_set_hotplug_handler() spapr_pci: provide node start offset via spapr_populate_pci_dt() spapr_pci: add ibm, my-drc-index property for PHB hotplug Nathan Fontenot (1): spapr: populate PHB DRC entries for root DT node hw/acpi/piix4.c | 2 hw/char/virtio-serial-bus.c | 2 hw/core/bus.c | 11 -- hw/core/qdev.c | 15 ++- hw/pci/pci.c | 33 +++++++ hw/pci/pcie.c | 2 hw/pci/shpc.c | 2 hw/ppc/spapr.c | 205 ++++++++++++++++++++++++++++++++++++++++- hw/ppc/spapr_drc.c | 65 ++++++++++--- hw/ppc/spapr_events.c | 3 + hw/ppc/spapr_hcall.c | 20 ++++ hw/ppc/spapr_iommu.c | 22 +++- hw/ppc/spapr_pci.c | 86 +++++++++++++---- hw/s390x/css-bridge.c | 2 hw/s390x/s390-pci-bus.c | 6 + hw/scsi/virtio-scsi.c | 2 hw/scsi/vmw_pvscsi.c | 2 hw/usb/dev-smartcard-reader.c | 2 include/hw/compat.h | 3 + include/hw/pci-host/spapr.h | 9 +- include/hw/pci/pci.h | 3 + include/hw/ppc/spapr.h | 15 +++ include/hw/ppc/spapr_drc.h | 8 ++ include/hw/qdev-core.h | 4 - 24 files changed, 446 insertions(+), 78 deletions(-)
