Re: [Xen-devel] [Xen-users] xen forum

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 05/22/2013 04:52 PM, Gordan Bobic wrote:
> On Wed, 22 May 2013 16:32:33 +0100, George Dunlap
> <george.dunlap@xxxxxxxxxxxxx> wrote:
> > On 22/05/13 16:27, Gordan Bobic wrote:
> > > On Wed, 22 May 2013 10:58:30 +0100, George Dunlap
> > > <George.Dunlap@xxxxxxxxxxxxx> wrote:
> > > > On Wed, May 22, 2013 at 10:53 AM, Ian Campbell
> > > > <Ian.Campbell@xxxxxxxxxx> wrote:
> > > > > On Wed, 2013-05-22 at 07:55 +0100, Gordan Bobic wrote:
> > > > > > Along with a wiki for documentation that is actually kept updated
> > > > > > when
> > > > > > features are added/removed/changed and more importantly, that clearly
> > > > > > states if/when obvious features are unexpectedly and conspicuously
> > > > > > missing
> > > > > The beauty of a wiki is that anyone can edit or correct it.
> > > > >
> > > > > We have regular documentation days where we are all (users and devs
> > > > > alike) encouraged to work to improve the state of the wiki and other
> > > > > documentation.
> > > > >
> > > > > http://wiki.xen.org/wiki/Xen_Document_Days
> > > > >
> > > > > The state of the Xen documentation base has actually improved
> > > > > considerably over the last year due to this initiative.
> > > > >
> > > > > > (e.g. domU config file method of passing multiple USB devices to
> > > > > > domU).
> > > > > I'm not sure what you are referring to here, the config file syntax is
> > > > > documented in docs/man/xl.cfg.pod.5 which is installed as the
> > > > > xl.cfg(5)
> > > > > manpage. It is also available online
> > > > > http://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html and referenced
> > > > > from the wiki e.g. http://wiki.xen.org/wiki/Xen_Man_Pages
> > > > >
> > > > > This manpage contains:
> > > > >         =item B<usbdevice=[ "DEVICE", "DEVICE", ...]>
> > > > This is a new feature for 4.3 -- 4.2 and earlier don't support
> > > > multiple USB devices (including say, a host device and an emulated usb
> > > > tablet).
> > > Is this an xl-only feature or will it work with xl as well?
> > It will work with both xl and xl, but not with xm. :-)
> Hmm... Are there any outstanding issues with xl and PCI / VGA passthrough?
>
> I'm sure I read on the (possibly out of date) wiki that with xl
> PCI passthrough requires FLR, which 99% of devices lack (i.e. makes
> it useless to anyone wanting to do any kind of PCI passthrough).
>
> Perhaps I'll try my VMs with xl tonight and see what, if anything,
> breaks and raise it before time's up for 4.3 release...
OK, I can confirm that my VM configs start OK using xl. Unfortunately, 
xl in 4.2 doesn't support usb-add, so I cannot pass the required USB 
devices through, over and above the one I can pass in the config file.
Will usb-add also be available in 4.3, in addition to the multi-device 
syntax in the config file?
Any chance of the multi-device syntax also being patched into xm for 4.3?

Gordan


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