On 03/04/2020 13:32, Anastassios Nanos wrote: > Hi all, > > I am trying to understand how live-migration happens in xen. I am > looking in the HVM guest case and I have dug into the relevant parts > of the toolstack and the hypervisor regarding memory, vCPU context > etc. > > In particular, I am interested in how PV device migration happens. I > assume that the guest is not aware of any suspend/resume operations > being done
Sadly, this assumption is not correct. HVM guests with PV drivers currently have to be aware in exactly the same way as PV guests. Work is in progress to try and address this. See https://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=775a02452ddf3a6889690de90b1a94eb29c3c732 (sorry - for some reason that doc isn't being rendered properly in https://xenbits.xen.org/docs/ ) ~Andrew
