Re: [PATCH v13 1/8] save/load cpu runstate

2013-03-05 Thread Paolo Bonzini
Il 05/03/2013 03:33, Hu Tao ha scritto: > On Mon, Mar 04, 2013 at 10:30:48AM +0100, Paolo Bonzini wrote: >> Il 28/02/2013 13:13, Hu Tao ha scritto: >>> This patch enables preservation of cpu runstate during save/load vm. >>> So when a vm is restored from snapshot, the cpu runstate is restored, >>>

Re: [PATCH v13 1/8] save/load cpu runstate

2013-03-04 Thread Hu Tao
On Mon, Mar 04, 2013 at 10:30:48AM +0100, Paolo Bonzini wrote: > Il 28/02/2013 13:13, Hu Tao ha scritto: > > This patch enables preservation of cpu runstate during save/load vm. > > So when a vm is restored from snapshot, the cpu runstate is restored, > > too. > > I don't think this feature is wor

Re: [PATCH v13 1/8] save/load cpu runstate

2013-03-04 Thread Paolo Bonzini
Il 28/02/2013 13:13, Hu Tao ha scritto: > This patch enables preservation of cpu runstate during save/load vm. > So when a vm is restored from snapshot, the cpu runstate is restored, > too. I don't think this feature is worth breaking backwards migration compatibility. It is usually handled at a

Re: [PATCH v13 1/8] save/load cpu runstate

2013-03-01 Thread Eric Blake
On 03/01/2013 12:36 AM, Hu Tao wrote: > On Thu, Feb 28, 2013 at 02:12:37PM -0700, Eric Blake wrote: >> On 02/28/2013 05:13 AM, Hu Tao wrote: >>> This patch enables preservation of cpu runstate during save/load vm. >>> So when a vm is restored from snapshot, the cpu runstate is restored, >>> too. >>

Re: [PATCH v13 1/8] save/load cpu runstate

2013-02-28 Thread Hu Tao
On Thu, Feb 28, 2013 at 02:12:37PM -0700, Eric Blake wrote: > On 02/28/2013 05:13 AM, Hu Tao wrote: > > This patch enables preservation of cpu runstate during save/load vm. > > So when a vm is restored from snapshot, the cpu runstate is restored, > > too. > > What happens if a management app wants

Re: [PATCH v13 1/8] save/load cpu runstate

2013-02-28 Thread Eric Blake
On 02/28/2013 05:13 AM, Hu Tao wrote: > This patch enables preservation of cpu runstate during save/load vm. > So when a vm is restored from snapshot, the cpu runstate is restored, > too. What happens if a management app wants to override the runstate when restoring the domain? I can think of sev

[PATCH v13 1/8] save/load cpu runstate

2013-02-28 Thread Hu Tao
This patch enables preservation of cpu runstate during save/load vm. So when a vm is restored from snapshot, the cpu runstate is restored, too. See following example: # save two vms: one is running, the other is paused (qemu) info status VM status: running (qemu) savevm running (qemu) stop (qemu)