GVT State Save/Restore

[Zhenyu Wang]

On 2020.03.20 11:49:46 +0100, Julian Stecklina wrote:
> Hi everyone,
> 
> I'm researching what needs to be done to enable VMs with a GVT device to be
> saved to disk and restored. This is similar to live migration in the sense that
> state of the vGPU needs to be serialized and deserialized, but simpler, because
> no dirty page tracking is needed.
> 
> I've seen work and discussions towards full live migration support:
> - https://www.spinics.net/lists/kvm/msg195198.html
> - https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg09242.html
> - 
> https://events17.linuxfoundation.org/sites/events/files/slides/Live%20migration%20with%20mdev%20device%20-%202017_0.pdf
> 
> It doesn't seem like any of the patches actually made it upstream. Are there
> some newer PoC patches to look at or did I miss some functionality in the
> mediator?
> 

cc Yan, who is working on upstream VFIO interface and GVT change for migration.

We have an old topic branch on https://github.com/intel/gvt-linux/commits/topic/gvt-migration-yan
which had working GVT migration support based on older interface proposal.

-- 
Open Source Technology Center, Intel ltd.

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