On 01/07/2015 10:10 PM, Bharata B Rao wrote: > This patchset enables CPU and memory hotplug support for PowerPC guests.
I missed seeing this as the qemu-ppc list was not included. Can you please add myself and Nathan on Cc in the future as well. Tyrel > > Changes in this patchset (v1): > > - Based on top of Michael Roth's tree > (https://github.com/mdroth/qemu/commits/spapr-hotplug-core) which serves > as base for his PCI hotplug patches too. > - Switched to device_add/del semantics instead of cpu-add. > - Supporting CPU hot unplug now. > - Added patches to enable memory hotplug. > - Added ibm,dynamic-reconfiguration-memory support which is needed for > memory hotplug. > > v0 - http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg00752.html > > CPU hotplug > ----------- > - Works with BE guest, has issues with LE guest. Has been tested on BE host > only. > - Adding a core (and all its threads) in response to device_add command. > Similarly removing a core via device_del will remove all the threads. > - Using Gu Zheng's "reclaim vCPU objects" patch to remove and reuse > the vCPU objects after CPUs removal. > (Gu Zheng's original patch: > http://lists.gnu.org/archive/html/qemu-devel/2014-12/msg01829.html) > > Memory hotplug > -------------- > - Able to get an LMB added with the current patchset, but there are issues > which I am still debugging. > - Re-using pc-dimm infrastructure (hw/mem/pc-dimm.c) to support memory > hotplug on PowerPC. > - Tested with Nathan Fontenot's memory hotplug kernel patches (with additions > to drive memory hotplug from EPOW interrupt path) > (https://www.marc.info/?l=linuxppc-embedded&m=141626066317143&w=2) > > Bharata B Rao (11): > spapr: Add DRC dt entries for CPUs > spapr: Consider max_cpus during xics initialization > spapr: Factor out CPU initialization code into realizefn > spapr: Support ibm,lrdr-capacity device tree property > spapr: CPU hotplug support > spapr: Start all the threads of CPU core when core is hotplugged > spapr: Enable CPU hotplug for POWER8 CPU family > spapr: CPU hot unplug support > spapr: Initialize hotplug memory address space > spapr: Support ibm,dynamic-reconfiguration-memory > spapr: Memory hotplug support > > Gu Zheng (1): > cpus, spapr: reclaim allocated vCPU objects > > Michael Roth (1): > spapr: enable PHB/CPU/LMB hotplug for pseries-2.3 > > cpus.c | 44 +++ > default-configs/ppc64-softmmu.mak | 1 + > hw/ppc/spapr.c | 744 > ++++++++++++++++++++++++++++++++++---- > hw/ppc/spapr_events.c | 11 +- > hw/ppc/spapr_hcall.c | 51 ++- > hw/ppc/spapr_rtas.c | 28 +- > include/hw/ppc/spapr.h | 27 +- > include/qom/cpu.h | 11 + > include/sysemu/kvm.h | 1 + > kvm-all.c | 57 ++- > target-ppc/translate_init.c | 50 ++- > 11 files changed, 918 insertions(+), 107 deletions(-) >