Re: [win-pv-devel] winpv: Question about "Add registry setting for removable capability of PDOs" patch and other questions

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:win-pv-devel-
> bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Fabio Fantoni
> Sent: 17 December 2014 10:58
> To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> Cc: Paul Durrant; Owen Smith
> Subject: [win-pv-devel] winpv: Question about "Add registry setting for
> removable capability of PDOs" patch and other questions
> 
> Hi, I did and tested new xenbus build and I saw this patch: "Add
> registry setting for removable capability of PDOs"
> http://xenbits.xen.org/gitweb/?p=pvdrivers/win/xenbus.git;a=commitdiff;h
> =e651df382f2e8be5dab6a30be226bb9e47ff6417
> I not understand if can be used for disable removable option on emulated
> devices now visible on "windows safetly remove hardware".
> Can you tell me something about please?

It only affects the removability of the class PDOs created by xenbus, it won't 
affect any other devices.

> 
> About these new windows pv drivers are there news about when will be
> available official builds?
> 

I actually got infrastructure last week; it took ages for the admins to give me 
some space to host build output. Now, I need to sanity check the latest builds 
and get them linked on the project front page.

> Keep looking xen-devel seems that recent pv drivers features require
> these patches still not upstream:
> - x86/hvm: Extend HVM cpuid leaf with vcpu id
> - x86/hvm: Add per-vcpu evtchn upcalls
> Is this correct? For now I build my xen-unstable builds that I use also
> for tests new pv drivers with them.
> 

No, these patches are not required; the drivers should still function without 
them. Those patches enable use of the FIFO event channel ABI though, so 
performance should be better with them applied.

  Paul

> Thanks for any reply and sorry for my bad english.
> 
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