Re: [Xen-devel] Xen Kernel Freeze

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 21 Dec 2005, at 15:17, Luke wrote:

> On Dec 21, 2005, at 9:55 AM, Keir Fraser wrote:
> > It's worth trying to add 'nousb' as a Linux boot parameter.
> Worked like a charm.  Thanks - it was fairly important to get this 
> fixed.
> Is there a good understanding of why this is?  Fix in the works?  I 
> may need to actually use the USB in the next couple months...
Andi Kleen has suggested that the problem may be due to a bad 
interaction with legacy USB emulation. If this is the case, you may be 
able to fix the instability without disabling usb by adding 
'usb-handoff' as a Linux boot parameter (instead of 'nousb').
That option is a default on some vendor kernels and also, I think, on 
more recent mainline kernels, which could be why non-Xen kernels have 
worked okay for you.
 -- Keir


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