Re: [LSF/MM/BPF TOPIC] BoF VM live migration over CXL memory​

[David Rientjes <rientjes@google.com>]

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On Fri, 7 Apr 2023, James Houghton wrote:

> On Fri, Apr 7, 2023 at 5:05 PM Dragan Stancevic <dragan@stancevic.com> wrote:
> >
> > Hi folks-
> >
> > if it's not too late for the schedule...
> >
> > I am starting to tackle VM live migration and hypervisor clustering over
> > switched CXL memory[1][2], intended for cloud virtualization types of loads.
> >
> > I'd be interested in doing a small BoF session with some slides and get
> > into a discussion/brainstorming with other people that deal with VM/LM
> > cloud loads. Among other things to discuss would be page migrations over
> > switched CXL memory, shared in-memory ABI to allow VM hand-off between
> > hypervisors, etc...
> >
> > A few of us discussed some of this under the ZONE_XMEM thread, but I
> > figured it might be better to start a separate thread.
> >
> > If there is interested, thank you.
> 
> Hi Dragan,
> 
> Thanks for bringing up this topic. I'd be very interested to be part
> of this BoF, as I'm also interested in using CXL.mem as a live
> migration mechanism.
> 

Thanks for cc'ing me, this would be very interesting to talk about.  Count 
me in!

> > [1]. High-level overview available at http://nil-migration.org/
> > [2]. Based on CXL spec 3.0
> >

Dragan: I'm curious about the reference to CXL spec 3.0 here, is there 
something specific about 3.0 that this work depends on or should we be 
good-to-go with 2.0 as well?  (Are you referring to 3.0 for security 
extensions?)