Re: [Qemu-devel] [PATCH 0/4] Introduce the microvm machine type

[Paolo Bonzini]

On 28/06/19 13:53, Sergio Lopez wrote:
> qemu-system-x86_64 -M microvm,legacy -m 512m -smp 2 \
>  -kernel vmlinux -append "console=ttyS0 root=/dev/vda" \
>  -nodefaults -no-user-config \
>  -drive id=test,file=test.img,format=raw,if=none \
>  -device virtio-blk-device,drive=test \
>  -netdev tap,id=tap0,script=no,downscript=no \
>  -device virtio-net-device,netdev=tap0 \
>  -serial stdio

I think the "non-legacy" mode can be obtained from the "legacy" one just
with -nodefaults (which all sane management should be using anyway), so
legacy=on can actually be the default. :)

I think this is interesting.  I'd love to have it optionally provide a
device tree as well.  It's not very common on x86 and most distro
kernels don't support device tree, but it would provide a more
out-of-the-box experience and it may even be a drop-in replacement for
q35 or pc as far as Kata is concerned.

Paolo