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Date:   Fri, 1 Oct 2021 17:28:55 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Juergen Gross <jgross@suse.com>
Cc:     xen-devel@lists.xenproject.org, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Stefano Stabellini <sstabellini@kernel.org>
Subject: Re: [PATCH v5 0/3] xen, usb: support pvUSB frontend driver
Message-ID: <YVcpNwTtnm2KAnP+@kroah.com>
References: <20211001150039.15921-1-jgross@suse.com>
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On Fri, Oct 01, 2021 at 05:00:36PM +0200, Juergen Gross wrote:
> This series adds XEN guest pvUSB support. With pvUSB it is possible to
> use physical USB devices from a XEN domain.
> 
> Since V4 a lot of time (several years) has passed. This is a revived
> attempt to get the frontend into the kernel.
> 
> The support consists of a frontend in form of a virtual hcd driver in
> the unprivileged domU passing I/O-requests to the backend in a driver
> domain (usually Dom0). The backend is not part of this patch series,
> as it is supported via qemu.
> 
> The code is taken (and adapted) from the original pvUSB implementation
> done for Linux 2.6 in 2008 by Fujitsu.
> 
> Normal operation of USB devices by adding and removing them dynamically
> to/from a domain has been tested using various USB devices (USB 1.1,
> 2.0 and 3.0) using the qemu based backend.
> 
> Changes in V5:
> - added interface documentation to patch 1
> - frontend no longer trusts backend to return only sane values

You forgot to send patch 3/3 to the linux-usb list :(