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Re: [libvirt] [Xen-devel] [PATCH] libxl: allow an <emulator> to be selected in the domain config XML



On Fri, 2013-05-31 at 13:14 +0200, Marek Marczykowski wrote:
> >> Optional attribute for <emulator> tag? Maybe sth like:
> >> <emulator type="stubdom">/usr/lib/xen/boot/ioemu-stubdom.gz</emulator>
> >> ?
> > 
> > FWIW the path can be omitted and libxl will DTRT.
> 
> Indeed. It looks like libxl even doesn't allow custom stubdom path - always
> uses hardcoded default. libxl_dm.c:
>     stubdom_state->pv_kernel.path
>         = libxl__abs_path(gc, "ioemu-stubdom.gz", libxl__xenfirmwaredir_path());
>     stubdom_state->pv_cmdline = libxl__sprintf(gc, " -d %d", guest_domid);
>     stubdom_state->pv_ramdisk.path = "";

So it does. FWIW given libxl allows an override for the process type of
qemu I can't think why we wouldn't allow an override here too.

> IMO it is much more useful to specify device model type (qemu upstream, qemu
> traditional, qemu traditional in stubdom) than explicit qemu path,

I agree. Users should not generally need to care about paths to things.

Ian.



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