On Thu, Jul 21, 2016 at 05:54:31PM +0200, Igor Mammedov wrote: > Series fixes migration issues caused by unstable cpu_index which depended > on order cpus were created/destroyed. It follows David's idea to make > cpu_index assignable by selected boards if board supports cpu-hotplug > with device_add and needs stable cpu_index/'migration id' but leaves > behaviour of the same as before for users that don't care about > cpu-hot(un)plug making changes low-risk. > > tested with: > SRC -snapshot -enable-kvm -smp 1,maxcpus=3 -m 256M guest.img -monitor stdio > \ > -device qemu64-x86_64-cpu,id=cpudel,apic-id=1 \ > -device qemu64-x86_64-cpu,apic-id=2 > (qemu) device_del cpudel > (qemu) stop > (qemu) migrate "exec:gzip -c > STATEFILE.gz" > > DST -snapshot -enable-kvm -smp 1,maxcpus=3 -m 256M guest.img -monitor stdio > \ > -device qemu64-x86_64-cpu,apic-id=2 \ > -incoming "exec: gzip -c -d STATEFILE.gz" > > git tree to test with: > https://github.com/imammedo/qemu cpu-index-stable > to view > https://github.com/imammedo/qemu/commits/cpu-index-stable
For PC bits: Reviewed-by: Michael S. Tsirkin <m...@redhat.com> This would be nice to have in 2.7. Who's reviewing/merging the rest? Eduardo? > CC: Paolo Bonzini <pbonz...@redhat.com> > CC: Peter Crosthwaite <crosthwaite.pe...@gmail.com> > CC: Richard Henderson <r...@twiddle.net> > CC: Eduardo Habkost <ehabk...@redhat.com> > CC: "Michael S. Tsirkin" <m...@redhat.com> > CC: David Gibson <da...@gibson.dropbear.id.au> > CC: Alexander Graf <ag...@suse.de> > CC: Riku Voipio <riku.voi...@iki.fi> > CC: Bharata B Rao <bhar...@linux.vnet.ibm.com> > CC: qemu-...@nongnu.org > > David Gibson (1): > Revert "spapr: Ensure CPU cores are added contiguously and removed in > LIFO order" > > Igor Mammedov (7): > exec: reduce CONFIG_USER_ONLY ifdeffenery > exec: don't use cpu_index to detect if cpu_exec_init()'s been called > for cpu > exec: set cpu_index only if it's been explictly set > qdev: fix object reference leak in case device.realize() fails > pc: init CPUState->cpu_index with index in possible_cpus[] > spapr: init CPUState->cpu_index with index relative to core-id > Revert "pc: Enforce adding CPUs contiguously and removing them in > opposite order" > > bsd-user/qemu.h | 2 -- > include/exec/exec-all.h | 12 +++++++++ > include/qemu/queue.h | 2 ++ > include/qom/cpu.h | 2 ++ > linux-user/qemu.h | 2 -- > exec.c | 65 > +++++++++---------------------------------------- > hw/core/qdev.c | 8 +++++- > hw/i386/pc.c | 38 +++-------------------------- > hw/ppc/spapr_cpu_core.c | 25 ++++--------------- > qom/cpu.c | 2 +- > 10 files changed, 44 insertions(+), 114 deletions(-) > > -- > 2.7.4
