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Re: [Qemu-devel] [RFC V2 10/10] cpus: reclaim allocated vCPU objects
From: |
Igor Mammedov |
Subject: |
Re: [Qemu-devel] [RFC V2 10/10] cpus: reclaim allocated vCPU objects |
Date: |
Mon, 8 Dec 2014 16:38:15 +0100 |
On Mon, 8 Dec 2014 10:50:21 +0000
Peter Maydell <address@hidden> wrote:
> On 8 December 2014 at 10:28, Gu Zheng <address@hidden> wrote:
> > Yes, it's a limitation now, but it is not the final implementation.
> > As to the QEMU side, the vcpu object in kernel is stateless, and a
> > reset operation will be done when we hot add a vcpu, so I think we
> > can kill the limitation, just choose a parked vcpu and reconfigure
> > it before we use it.
>
> Why can't the kernel handle our just destroying the vcpu and
> later recreating it if necessary? That seems the more logical
> approach than trying to keep fds hanging around in userspace
> for reuse.
It's somewhat complex approach and it was suggested on KVM list to go
parking route. for more details see thread
https://www.mail-archive.com/address@hidden/msg102839.html
>
> -- PMM
>
Re: [Qemu-devel] [RFC V2 10/10] cpus: reclaim allocated vCPU objects, Gu Zheng, 2014/12/08