Re: [PATCH v7 2/3] usb: Introduce Xen pvUSB frontend (xen hcd)

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On Tue, Nov 23, 2021 at 02:20:47PM +0100, Juergen Gross wrote:
> Introduces the Xen pvUSB frontend. With pvUSB it is possible for a Xen
> domU to communicate with a USB device assigned to that domU. The
> communication is all done via the pvUSB backend in a driver domain
> (usually Dom0) which is owner of the physical device.
> 
> The pvUSB frontend is a USB hcd for a virtual USB host connector.
> 
> The code is taken from the pvUSB implementation in Xen done by Fujitsu
> based on Linux kernel 2.6.18.
> 
> Changes from the original version are:
> - port to upstream kernel
> - put all code in just one source file
> - move module to appropriate location in kernel tree
> - adapt to Linux style guide
> - minor code modifications to increase readability
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> ---
>  drivers/usb/host/Kconfig   |   11 +
>  drivers/usb/host/Makefile  |    1 +
>  drivers/usb/host/xen-hcd.c | 1606 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 1618 insertions(+)
>  create mode 100644 drivers/usb/host/xen-hcd.c

This looks sane to me, but I don't know the HCD interface as well as
others on linux-usb do, like Alan Stern.

What tree do you want this to be merged through, my USB one?

thanks,

greg k-h



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