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Re: [Qemu-devel] [RFC qemu 2/4] virtio-balloon: Add a new feature to bal
From: |
Li, Liang Z |
Subject: |
Re: [Qemu-devel] [RFC qemu 2/4] virtio-balloon: Add a new feature to balloon device |
Date: |
Fri, 4 Mar 2016 02:29:19 +0000 |
> Subject: Re: [RFC qemu 2/4] virtio-balloon: Add a new feature to balloon
> device
>
> On Thu, Mar 03, 2016 at 06:44:26PM +0800, Liang Li wrote:
> > Extend the virtio balloon device to support a new feature, this new
> > feature can help to get guest's free pages information, which can be
> > used for live migration optimzation.
> >
> > Signed-off-by: Liang Li <address@hidden>
>
> I don't understand why we need a new interface.
> Balloon already sends free pages to host.
> Just teach host to skip these pages.
>
I just make use the current virtio-balloon implementation, it's more
complicated to
invent a new virtio-io device...
Actually, there is no need to inflate the balloon before live migration, so the
host has
no information about the guest's free pages, that's why I add a new one.
> Maybe instead of starting with code, you should send a high level description
> to the virtio tc for consideration?
>
> You can do it through the mailing list or using the web form:
> http://www.oasis-
> open.org/committees/comments/form.php?wg_abbrev=virtio
>
Thanks for your information and suggestion.
Liang
- [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization, Liang Li, 2016/03/03
- [Qemu-devel] [RFC qemu 1/4] pc: Add code to get the lowmem form PCMachineState, Liang Li, 2016/03/03
- [Qemu-devel] [RFC qemu 3/4] migration: not set migration bitmap in setup stage, Liang Li, 2016/03/03
- [Qemu-devel] [RFC qemu 2/4] virtio-balloon: Add a new feature to balloon device, Liang Li, 2016/03/03
- [Qemu-devel] [RFC qemu 4/4] migration: filter out guest's free pages in ram bulk stage, Liang Li, 2016/03/03
- Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization, Roman Kagan, 2016/03/03
- Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization, Dr. David Alan Gilbert, 2016/03/03