Re: [Xen-users] usb passthrough

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Feb 26, 2010 at 10:26:29PM -0500, Chris wrote:
> That makes sense however one would think USB 2.0 support would be a good 
> feature to have. There's quite a bit of people looking to utilize pci 
> passthrough and I'd imagine USB passthrough would be similarly useful
>

That's why pvusb was developed.. it allows usb 2.0 speeds/functionality :)

-- Pasi

> Sent from my iPhone
>
> On Feb 26, 2010, at 7:36 PM, "James Harper" 
> <james.harper@xxxxxxxxxxxxxxxx> wrote:
>
>>>
>>> I wonder why it's limited to 1.1 i would imagine that is a hard coded
>>> limit but given a faster system shouldn't the emulation be faster?  
>>> Who
>>> could shed more light on why?
>>>
>>
>> Well if it talks to the device in '1.1 mode' then the limit will still 
>> apply.
>>
>> At a guess, maybe the 1.1 hardware interface is a bit simpler? I  
>> suspect that they already implemented USB 1.1 to support the mouse and 
>> tablet interface, and passthrough was not much harder, but 2.0/3.0 
>> implementation would have been a lot more work.
>>
>> James

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