linux-kernel - Re: [Patch V4 1/3] usb: Add Xen pvUSB protocol description

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Date:	Thu, 23 Jul 2015 06:04:39 +0200
From:	Juergen Gross <jgross@...e.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	konrad.wilk@...cle.com, david.vrabel@...rix.com,
	boris.ostrovsky@...cle.com, linux-usb@...r.kernel.org
Subject: Re: [Patch V4 1/3] usb: Add Xen pvUSB protocol description

On 07/23/2015 01:46 AM, Greg KH wrote:
> On Tue, Jun 23, 2015 at 08:53:23AM +0200, Juergen Gross wrote:
>> Add the definition of pvUSB protocol used between the pvUSB frontend in
>> a Xen domU and the pvUSB backend in a Xen driver domain (usually Dom0).
>>
>> This header was originally provided by Fujitsu for Xen based on Linux
>> 2.6.18.
>>
>> Changes are:
>> - adapt to Linux style guide
>>
>> Signed-off-by: Juergen Gross <jgross@...e.com>
>> ---
>>   include/xen/interface/io/usbif.h | 252 +++++++++++++++++++++++++++++++++++++++
>
> Why is this a different interface than the existing ones we have today
> (i.e. usbip?)  Where is it documented?  Do the Xen developers /

The interface definition is living in the Xen git repository for several
years now:

git://xenbits.xen.org/xen.git -> xen/include/public/io/usbif.h

It is used e.g. in SUSE's xen kernel since 2.6.18.

The differences between the Xen version and the one I've posted here are
only style and name space related.

> maintainers agree with this interface and code?  I need their sign-off
> before I can accept such a thing.

Sure.

David, Konrad, Boris, could one of you please comment on the patches?


Juergen
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