Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-06 Thread Austin S Hemmelgarn
On 2015-03-04 09:09, Juergen Gross wrote: The main question whether it is worth to consider this alternative is the performance aspect. Does anyone have an idea which USB devices would typically be used via pvusb? I'd suspect memory sticks and USB disks and perhaps webcams being the most performa

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-06 Thread Pasi Kärkkäinen
On Wed, Mar 04, 2015 at 02:46:33PM +, Ian Campbell wrote: > On Wed, 2015-03-04 at 15:41 +0100, Juergen Gross wrote: > > On 03/04/2015 03:29 PM, Ian Campbell wrote: > > > On Wed, 2015-03-04 at 14:19 +, David Vrabel wrote: > > >> On 04/03/15 14:09, Juergen Gross wrote: > > >>> > > >>> The mai

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Juergen Gross
On 03/04/2015 04:27 PM, Greg KH wrote: On Wed, Mar 04, 2015 at 02:31:08PM +0100, Juergen Gross wrote: On 03/02/2015 12:39 PM, David Vrabel wrote: On 26/02/15 13:35, Juergen Gross wrote: Introduces the Xen pvUSB backend. With pvUSB it is possible for a Xen domU to communicate with a USB device

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Greg KH
On Wed, Mar 04, 2015 at 02:31:08PM +0100, Juergen Gross wrote: > On 03/02/2015 12:39 PM, David Vrabel wrote: > >On 26/02/15 13:35, Juergen Gross wrote: > >>Introduces the Xen pvUSB backend. With pvUSB it is possible for a Xen > >>domU to communicate with a USB device assigned to that domU. The > >>

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Peter Stuge
Juergen Gross wrote: > Do you have another feeling about the probability of a need to do usb 3? > If it is already on the horizon I wouldn't want to do the user space > backend now and the kernel one next year. :-) One year is pretty long in kernel time. //Peter -- To unsubscribe from this list:

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Ian Campbell
On Wed, 2015-03-04 at 15:41 +0100, Juergen Gross wrote: > On 03/04/2015 03:29 PM, Ian Campbell wrote: > > On Wed, 2015-03-04 at 14:19 +, David Vrabel wrote: > >> On 04/03/15 14:09, Juergen Gross wrote: > >>> > >>> The main question whether it is worth to consider this alternative is > >>> the p

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Juergen Gross
On 03/04/2015 03:29 PM, Ian Campbell wrote: On Wed, 2015-03-04 at 14:19 +, David Vrabel wrote: On 04/03/15 14:09, Juergen Gross wrote: The main question whether it is worth to consider this alternative is the performance aspect. Does anyone have an idea which USB devices would typically be

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Ian Campbell
On Wed, 2015-03-04 at 14:19 +, David Vrabel wrote: > On 04/03/15 14:09, Juergen Gross wrote: > > > > The main question whether it is worth to consider this alternative is > > the performance aspect. Does anyone have an idea which USB devices would > > typically be used via pvusb? I'd suspect m

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread David Vrabel
On 04/03/15 14:09, Juergen Gross wrote: > > The main question whether it is worth to consider this alternative is > the performance aspect. Does anyone have an idea which USB devices would > typically be used via pvusb? I'd suspect memory sticks and USB disks > and perhaps webcams being the most p

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Juergen Gross
On 03/04/2015 02:53 PM, David Vrabel wrote: On 04/03/15 13:31, Juergen Gross wrote: On 03/02/2015 12:39 PM, David Vrabel wrote: On 26/02/15 13:35, Juergen Gross wrote: Introduces the Xen pvUSB backend. With pvUSB it is possible for a Xen domU to communicate with a USB device assigned to that d

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread David Vrabel
On 04/03/15 13:31, Juergen Gross wrote: > On 03/02/2015 12:39 PM, David Vrabel wrote: >> On 26/02/15 13:35, Juergen Gross wrote: >>> Introduces the Xen pvUSB backend. With pvUSB it is possible for a Xen >>> domU to communicate with a USB device assigned to that domU. The >>> communication is all do

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Juergen Gross
On 03/04/2015 02:41 PM, Ian Campbell wrote: On Wed, 2015-03-04 at 14:31 +0100, Juergen Gross wrote: - move module to appropriate location in kernel tree drivers/xen/ is the correct location for this driver. Hmm, so you regard placement of xen-netback under drivers/net and xen-blkback under d

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Ian Campbell
On Wed, 2015-03-04 at 14:31 +0100, Juergen Gross wrote: > >> - move module to appropriate location in kernel tree > > > > drivers/xen/ is the correct location for this driver. > > Hmm, so you regard placement of xen-netback under drivers/net and > xen-blkback under drivers/block as wrong? I've jus

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-04 Thread Juergen Gross
On 03/02/2015 12:39 PM, David Vrabel wrote: On 26/02/15 13:35, Juergen Gross wrote: Introduces the Xen pvUSB backend. 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 D

Re: [Xen-devel] [PATCH 3/4] usb: Introduce Xen pvUSB backend

2015-03-02 Thread David Vrabel
On 26/02/15 13:35, Juergen Gross wrote: > Introduces the Xen pvUSB backend. 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 dev