Re: [Qemu-arm] Maintainers, please tell us how to boot your machines!

[Anthony PERARD <anthony.perard@citrix.com>]

On Tue, Mar 19, 2019 at 07:34:45PM +0100, Markus Armbruster wrote:
>     = hw/xenpv/xen_machine_pv.c =
>     Stefano Stabellini <sstabellini@kernel.org> (supporter:X86)
>     Anthony Perard <anthony.perard@citrix.com> (supporter:X86)
>     Paul Durrant <paul.durrant@citrix.com> (supporter:X86)
>     xen-devel@lists.xenproject.org (open list:X86)

That machine requires Xen to be started and at least one service,
xenstore.

In dom0, when it's used to attach more disks to dom0:

$QEMU -M xenpv -xen-domid 0 -xen-attach \
        -name dom0 -nographic  -daemonize \
        -monitor /dev/null -serial /dev/null -parallel /dev/null \
        -nodefaults -no-user-config

Communication is then done via xenstore to attach disks, we would use
`xl block-attach` for that.

Another example, when we start a guest and want to attach qcow disk and
VNC. Our tool stack (xl / libxl) would first create the domain then
start QEMU:

$QEMU -machine xenpv -xen-domid 6 -xen-attach \
        -name pv-arch \
        -chardev socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-6,server,nowait \
        -mon chardev=libxl-cmd,mode=control \
        -no-shutdown -nodefaults -no-user-config \
        -vnc 0.0.0.0:0,to=99 \
        -display none -m 1024

Is that enough information?

Also, we do automated tests of QEMU. It is done by `osstest' and the
results are sent to xen-devel@lists.xenproject.org.
One example of a test result:
    https://lists.xenproject.org/archives/html/xen-devel/2019-03/msg01577.html

Thanks,

-- 
Anthony PERARD