[please keep the list on CC for benefit of the community] On 10/16/22 09:58, Simon Fairweather wrote: > Thanks Michal, Are there any known issues with Memory Backing. We have > QEMU 7.1 and libvirt 8.7. > > If just Memory Backing is set the VM Freezes after a couple of hours and > the allocated CPUs show 100% on the host. > > Seems to happen more on AMD Platforms than Intel. > > Please advise on any info you need, likely this is a QEMU issue. > > <memoryBacking> > <source type='memfd'/> > <access mode='shared'/> > </memoryBacking> Agreed, this smells like QEMU issue. There's nothing obviously wrong with this snipped. I have a VM with just that and run it just fine. Although, I run it for couple of hours max. Michal