usb support?

usb support?

[Dick Davies]

Hi, really simple question - does xen support usb yet?


I've googled and seen recent posts that seem to indicate it does.

I tried last nights bk source and got a 2.6 kernel up into x no problem -
very impressed how easy it was, actually - but my base system is a 2.4 Debian
build - am I likely to have more luck with a 2.4 xen build?

I wasn't sure if xen builds its own modules or uses the system, though I suspect 
the latter.


In any case, I can eliminate that problem by sticking usb into the kernel if I
know it's a module thing, rather than a 'it ain't going to work' thing .....


Thanks!

-- 
Newlan's Truism:
	An "acceptable" level of unemployment means that the government
economist to whom it is acceptable still has a job.
Rasputin :: Jack of All Trades - Master of Nuns


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Re: usb support?

[Rolf Neugebauer]

Hi Dick

USB at least in Dom0 should just work (tm). Various people have reported
success

It is not enabled by default. you have to configure the dom0 kernel to
include it (i.e. modify defconfig-xen0 for the 2.4 or xen0_defconfig for
the 2.6 kernel).

XenoLinux uses it's own modules, ie not the system modules. So if you
configure USB support as modules you would also have to install them.

Rolf

On Thu, 2004-09-02 at 09:24, Dick Davies wrote:
> Hi, really simple question - does xen support usb yet?
> 
> 
> I've googled and seen recent posts that seem to indicate it does.
> 
> I tried last nights bk source and got a 2.6 kernel up into x no problem -
> very impressed how easy it was, actually - but my base system is a 2.4 Debian
> build - am I likely to have more luck with a 2.4 xen build?
> 
> I wasn't sure if xen builds its own modules or uses the system, though I suspect 
> the latter.
> 
> 
> In any case, I can eliminate that problem by sticking usb into the kernel if I
> know it's a module thing, rather than a 'it ain't going to work' thing .....
> 
> 
> Thanks!



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Re: usb support?

[Dick Davies]

Thanks Rolf , that's what I thought.

I'm mainly thinking of a usb keyboard and mouse - if that's working in dom0,
will I be able to use the console in the other domains, or do they need usb support too?

I don't see any mention of modules in the top-level makefile, so should I be descending into 
the kernel source directories and doing a usual 'make modules_install' in there?

Sorry for the newbie questions. It's because I'm a newbie :)

* Rolf Neugebauer <rolf.neugebauer@intel.com> [0908 10:08]:
> Hi Dick
> 
> USB at least in Dom0 should just work (tm). Various people have reported
> success
> 
> It is not enabled by default. you have to configure the dom0 kernel to
> include it (i.e. modify defconfig-xen0 for the 2.4 or xen0_defconfig for
> the 2.6 kernel).
> 
> XenoLinux uses it's own modules, ie not the system modules. So if you
> configure USB support as modules you would also have to install them.
> 
> Rolf
> 
> On Thu, 2004-09-02 at 09:24, Dick Davies wrote:
> > Hi, really simple question - does xen support usb yet?
> > 
> > 
> > I've googled and seen recent posts that seem to indicate it does.
> > 
> > I tried last nights bk source and got a 2.6 kernel up into x no problem -
> > very impressed how easy it was, actually - but my base system is a 2.4 Debian
> > build - am I likely to have more luck with a 2.4 xen build?
> > 
> > I wasn't sure if xen builds its own modules or uses the system, though I suspect 
> > the latter.

-- 
You could get a new lease on life -- if only you didn't need the first
and last month in advance.
Rasputin :: Jack of All Trades - Master of Nuns


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Re: usb support?

[Rolf Neugebauer]

On Thu, 2004-09-02 at 10:15, Dick Davies wrote:
> Thanks Rolf , that's what I thought.
> 
> I'm mainly thinking of a usb keyboard and mouse - if that's working in dom0,
> will I be able to use the console in the other domains, or do they need usb support too?

that should work. other domains have a virtual console

> I don't see any mention of modules in the top-level makefile, so should I be descending into 
> the kernel source directories and doing a usual 'make modules_install' in there?

my reading of the make file is that is will build modules and install
them in install/lib/modules if you invoke it with build world and you
should be able to install them on the system with make install.

Rolf

> Sorry for the newbie questions. It's because I'm a newbie :)
> 
> * Rolf Neugebauer <rolf.neugebauer@intel.com> [0908 10:08]:
> > Hi Dick
> > 
> > USB at least in Dom0 should just work (tm). Various people have reported
> > success
> > 
> > It is not enabled by default. you have to configure the dom0 kernel to
> > include it (i.e. modify defconfig-xen0 for the 2.4 or xen0_defconfig for
> > the 2.6 kernel).
> > 
> > XenoLinux uses it's own modules, ie not the system modules. So if you
> > configure USB support as modules you would also have to install them.
> > 
> > Rolf
> > 
> > On Thu, 2004-09-02 at 09:24, Dick Davies wrote:
> > > Hi, really simple question - does xen support usb yet?
> > > 
> > > 
> > > I've googled and seen recent posts that seem to indicate it does.
> > > 
> > > I tried last nights bk source and got a 2.6 kernel up into x no problem -
> > > very impressed how easy it was, actually - but my base system is a 2.4 Debian
> > > build - am I likely to have more luck with a 2.4 xen build?
> > > 
> > > I wasn't sure if xen builds its own modules or uses the system, though I suspect 
> > > the latter.



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Re: usb support?

[Mark Williamson]

The virtual console of other domains is just an application running in domain 
0; so if domain 0 can see the keyboard, you can use it to control the other 
domain consoles too ;-)

You might find it necessary to try a 2.4 build in order to work properly with 
your Debian: 2.6 has a new set of module utilities, which you'll need if you 
want to load modules (NB. these new utilities also work on older kernels, e.g. 
2.4).  I suspect Debian stable won't have the new utilities, although it seems 
plausible that testing / unstable would.

HTH,
Mark



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