On Tue, Feb 16, 2016 at 12:54:57PM +0100, Christian Borntraeger wrote: > So my quick and dirty summary of CPU as _I_ understand it > (and I only have some part time bandwidth at the moment for that) > > x86 has cpu hotplug. Some history > qemu-kvm had cpu_set in the past > qemu has cpu_add for a while now > libvirt code uses cpu_add cross-platform out of the box > > proposal to use device_add. Currently this has the following issues that > we need to discuss: > - will require capability checking and dual code in libvirt (and libvirt updates) > - Power has some constraints that are hard to model with just device add > - David Gibson proposes a two layer interface > - low level: device add cpu-package > - high level > - David Hildenbrand has some concerns regarding CPU models (with base model + feature > on/off), as device_add needs instantiatable type > - devel_del: s390 has no interface for cpu removal (Matts latest patches reset the > machine just like z/VM - until we have some interface) > - anything else? (cpu hotplug on ARM or MIPS?) > > Would be good to use todays call to have a plan how to finish things soon. > (maybe even for 2.6) Did the call happen? I am away from work for most days during the next 2 weeks, so I couldn't attend. -- Eduardo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
