include: update virtio UAPI headers

Commit a08bb43a0c37 ("kvmtool: Copy Linux' up-to-date virtio headers")
copied the kernel's virtio UAPI headers into the kvmtool tree, because
at the time some dis

include: update virtio UAPI headers

Commit a08bb43a0c37 ("kvmtool: Copy Linux' up-to-date virtio headers")
copied the kernel's virtio UAPI headers into the kvmtool tree, because
at the time some distros didn't include (all of) them in their kernel
headers package.
Let's update those copies, so that we can use newer features, if needed.

This syncs in the already existing copies of the headers from Linux
v5.18.0.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20220524150611.523910-4-andre.przywara@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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virtio: add support for vsock

The "run" command accepts a new option (--vsock <cid>) which specify the
guest CID. For instance:

$ lkvm run --kernel ./bzImage --disk test --vsock 3

One can easily

virtio: add support for vsock

The "run" command accepts a new option (--vsock <cid>) which specify the
guest CID. For instance:

$ lkvm run --kernel ./bzImage --disk test --vsock 3

One can easily test by: https://github.com/stefanha/nc-vsock.

In the guest:

# modprobe vsock
# nc-vsock -l 1234

In the host:

# modprobe vhost_vsock
# nc-vsock 3 1234

This patch comes from the early submission of G. Campana. On this basis,
I fixed the compilation errors and runtime crashes. Thanks for the work
done by G. Campana.
https://patchwork.kernel.org/patch/9542313/

Signed-off-by: G. Campana <gcampana+kvm@quarkslab.com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20200915094402.107988-1-tianjia.zhang@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>

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