David! On Mon, Jan 16 2023 at 19:28, David Woodhouse wrote: > On Mon, 2023-01-16 at 20:22 +0100, Thomas Gleixner wrote: >> > Tested-by: David Woodhouse <dwmw@xxxxxxxxxxxx> >> > >> > Albeit only under qemu with >> > https://git.infradead.org/users/dwmw2/qemu.git/shortlog/refs/heads/xenfv >> > and not under real Xen. >> >> Five levels of emulation. What could possibly go wrong? > > It's the opposite — this is what happened when I threw my toys out of > the pram and said, "You're NOT doing that with nested virtualization!". > > One level of emulation. We host guests that think they're running on > Xen, directly in QEMU/KVM by handling the hypercalls and event > channels, grant tables, etc. > > We virtualised Xen itself :) Groan. Can we please agree on *one* hypervisor instead of growing emulators for all other hypervisors in each of them :) > Now you have no more excuses for breaking Xen guest mode! No cookies, you spoilsport! :) tglx
