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 memory

Re: [Xen-devel] [PATCH RFC V2 1/5] libxl: add pvusb definitions

2015-03-04 Thread George Dunlap
On 03/04/2015 08:28 AM, Chun Yan Liu wrote: On 3/4/2015 at 01:15 AM, in message 54f5ec4e.6020...@eu.citrix.com, George Dunlap george.dun...@eu.citrix.com wrote: On 01/19/2015 08:28 AM, Chunyan Liu wrote: To attach a usb device, a virtual usb controller should be created first. This

Re: [Xen-devel] [PATCH v3 13/24] xen/arm: Implement hypercall PHYSDEVOP_{, un}map_pirq

2015-03-04 Thread Julien Grall
On 04/03/15 14:55, Jan Beulich wrote: On 04.03.15 at 15:37, julien.gr...@linaro.org wrote: I looked to the interface of XENDOMCTL_bind_pt_irq and I'm not sure about the meaning of machine_irq and isa_irq. AFAIU the code: machine_irq = guest PIRQ Yes (i.e. the Xen assigned

Re: [Xen-devel] [PATCH tip/core/rcu 02/20] x86: Use common outgoing-CPU-notification code

2015-03-04 Thread Boris Ostrovsky
On 03/04/2015 09:43 AM, Paul E. McKenney wrote: On Tue, Mar 03, 2015 at 02:31:51PM -0800, Paul E. McKenney wrote: On Tue, Mar 03, 2015 at 05:06:50PM -0500, Boris Ostrovsky wrote: On 03/03/2015 04:26 PM, Paul E. McKenney wrote: On Tue, Mar 03, 2015 at 03:13:07PM -0500, Boris Ostrovsky wrote:

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

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