[pve-devel] qemu2.7: cpu hotplug && hot-unplug v1

[Alexandre DERUMIER]

>>FYI a first 2.7 build is on pvetest now

Thanks Wolfgang !
I'll retry my cpu hotplug patches tommorow

----- Mail original -----
De: "Wolfgang Bumiller" <w.bumiller at proxmox.com>
À: "aderumier" <aderumier at odiso.com>
Cc: "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Mercredi 12 Octobre 2016 16:18:06
Objet: Re: [pve-devel] qemu2.7: cpu hotplug && hot-unplug v1

FYI a first 2.7 build is on pvetest now 

On Tue, Sep 06, 2016 at 12:41:52PM +0200, Alexandre Derumier wrote: 
> Hi, 
> This patch series implement new qemu 2.7 cpu hotplug framework, with device_add|device_del 
> 
> hot-unplug is working now ! 
> 
> config example: 
> --------------- 
> cpu: kvm64 
> sockets:2 
> cores:2 
> 
> generate cmdline 
> ---------------- 
> -cpu kvm64,+lahf_lm,+sep,+kvm_pv_unhalt,+kvm_pv_eoi,enforce 
> -smp 1,sockets=2,cores=2,maxcpus=4 
> -device kvm64-x86_64-cpu,id=cpu2,socket-id=0,core-id=1,thread-id=0 
> -device kvm64-x86_64-cpu,id=cpu3,socket-id=1,core-id=0,thread-id=0 
> -device kvm64-x86_64-cpu,id=cpu4,socket-id=1,core-id=1,thread-id=0 
> 
> 
> First core is not hotpluggable (-smp 1). (socket-id=0,core-id=0) 
> Others cores are added with -device, with cpumodel,socket-id && core-id. 
> 
> cpuflags are defined globally in -cpu , and are auto applied on hotplug 
> 
> Tested with debian jessie, kernel 3.16. 
> 
> This new config is only apply with machine 2.7+cpu hotplug enabled, as it break live migration. 
> 
> 
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