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Re: [Xen-devel] USB in xenolinux

To: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] USB in xenolinux
From: Sean Atkinson <sean@xxxxxxxxxxxxxx>
Date: Thu, 18 Mar 2004 13:45:21 +0100
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Hi,

> Wooaah! hold up there!
> 
> This isn't going to work right now because Xen 1.2 currently
> assumes it contains all the hardware drivers, and there's
> currently no mechanism to (safely) export hardware to domains or
> plumb interrupts through. 
> 
> In your configuration, you've told dom0 to go behind Xen's back
> and help itself to the hardware. Since dom0 is fully privileged,
> Xen isn't stopping it, but it's going to end in tears...
> 
> In the new IO world (which is still under development) you'll be
> able to plumb interrupts through to domains and selectively grant
> domains access to individual bits of hardware.
> 
> This is still a few weeks away, though progress is fast.
> 
> I'm afraid USB won't work until such time.

OK, I thought I vaguely recalled some discussion of such problems and
the brave new IO world as a solution.  Just wanted to explore the
potential, but I'll wait for the new IO code until I hack any more.

Thanks,

Sean.

-- 
Sean Atkinson <sean@xxxxxxxxxxxxxx>
Netproject



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