On Sat, 2020-11-28 at 23:16 +0000, Joao Martins wrote: > I don't know how far you've gone on your implementation but in the past I had > send a series for Xen guests support (and backends/uabi too), hopefully > you find that useful and maybe part of that could be repurposed? > > https://lore.kernel.org/kvm/20190220201609.28290-1-joao.m.martins@xxxxxxxxxx/ > > (The link above has links towards userland parts albeit you probably don't > care about Qemu) Oh, that looks extremely useful; thanks! > While it looks big at the first sight ... in reality out of the 39 patches, > only the first 16 patches implement the guest parts [*] while reusing the > XEN_HVM_CONFIG for the xen hypercall page MSR. Assuming the userspace VMM > does most device emulation including xenbus handling. Right, I'd probably only be looking for those first 16 or so, and would do netback/blkback in userspace. But having the shared_info handling, as well enough of hypercalls and event channels to cover the fast paths like IPIs, would be great. I'll have a play with it.
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