Background and motivation

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It must also be noted, that while experimenting with vhost and SPDK a few EVE PRs that can be re-used were generated and will be repurposed for this work.

It was suggested by one of our community members that "would be great to avoid any bio repacking on host userspace side and make it possible to fetch nvmeof requests directly on the host kernel side (since guest and host share the same memory, that can be doable). Yes, that means you write your own driver for the host as well, but still you do that for the guest, so should not be a big problem"