Re: [Xen-devel] Xen PV: Sample new PV driver for buffer sharing between domains

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Nov 01, 2018 at 09:49:13PM +0000, Julien Grall wrote:
> (+ Wei)
> 
> On 11/1/18 9:15 AM, Omkar Bolla wrote:
> > Hi,
> > 
> > > May I ask why you need the dependency on the rootfs?
> > 
> > I am trying to pass-through the display to guest domain. to do through
> > driver needs clocks. I have written simple basic clock pv frontend and
> > backend.
> > So I thought these clocks must be initialised before display driver
> > initialisation.
> 
> The graphic driver should request the clock, right? So Linux will make sure
> to have the clock before initializing the display.
> 
> > 
> > But if I start both domain and clocks script one after another, clock
> > got initialised properly. Problem solved.
> > But still i have some doubt, is it possible to do some thing in xenbits
> > src to start automatically when we start underprivileged domain?
> 
> I am not entirely sure if we have a way to run a script during domain
> creation. Wei, do you know if that's possible?

There is the hotplug script mechanism which may or may not be what you
need.

Wei.

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