This is great news for folks that use microVMs - "we only use AWS" has been an issue for our stuff (slicer services/sandboxes/actuated self-hosted GitHub runners)

If anyone here can't wait (as it looks like there's very little info on this at the moment..)

I wrote up detailed instructions for Ant Group's KVM-PVM patches. Performance is OK for background servers/tasks, but does take a hit up to 50% on complex builds like Kernels or Go with the K8s client.

DIY/detailed option:

https://blog.alexellis.io/how-to-run-firecracker-without-kvm...

Fully working, pre-built host and guest kernel and rootfs:

https://docs.slicervm.com/tasks/pvm/

I'll definitely be testing this and comparing as soon as it's available. Hopefully it'll be accelerated somewhat compared to the PVM approach. There's still no sign whether those patches will ever end up merged upstream in the Linux Kernel. If you know differently, I'd appreciate a link.

Azure, OCI, DigitalOcean, GCE all support nested virt as an option and do all take a bit of a hit, but it makes for very easy testing / exploration. Bare-metal on Hetzner now has a setup fee of up to 350 EUR.. you can find some stuff with 0 setup fee, but it's usually quite old kit.

Edit: this doesn't look quite as good as the headline.. Options for instances look a bit limited. Someone found some more info here: https://x.com/nanovms/status/2022141660143165598/photo/1

> Bare-metal on Hetzner now has a setup fee of up to 350 EUR.. you can find some stuff with 0 setup fee, but it's usually quite old kit.

I don't understand what you are paying for here, nested virtualization doesn't need any extra setup for hardware compared to normal one

... or you are saying Hetzner wants 350 EUR for turning on normal virtualization option in BIOS ?