On Fri, Sep 12, 2014 at 4:23 PM, Anshul Makkar <anshul.mak...@profitbricks.com> wrote: > During plugging we can see this event: echo 1 > cpu8/online. > > But during unplugging , we can't see the event echo 0 > cpu8/online.
That's because I didn't do that explicitly, was always trying to remove an online cpu from the monitor w/o explicitly offlining it from inside the guest. Either ways I still see the removed CPU being listed in QEMU monitor. I don't ever hit any of the below code paths during CPU removal: cpus.c: qemu_kvm_destroy_vcpu() cpus.c: x86_cpu_finalizefn() I see CPU_REMOVE() being called from above two routines. And neither does hw/acpi/cpu_hotplug.c:cpu_status_write() gets called here. Does the message "ACPI: Device does not support D3cold" guest kernel throws during hot removal is causing this behaviour here ? Guest kernel is 3.11.10, should I be on latest kernel ? Regards, Bharata.
