Re: unbind xen3 frontend drivers

[Jean-Yves Migeon <jean-yves.migeon%espci.fr@localhost>]

Christoph Egger wrote:
> Xen supports ia64 aside of x86. It allows to run
> both HVM and PV guests.
> HVM guests may also use PV drivers.
>
> In order to make PV drivers available for NetBSD
> as HVM guest, I have to unbind the xen3 frontend
> drivers from the PV guest only context.
>
> This means, I need to move the following files
> into a seperate directory:
>
> if_xennet_xenbus.c
> xbd_xenbus.c
> xennet_checksum.c
>
> In my working tree, I moved them to
> sys/arch/xen/dev
>
> Is this directory ok or
> should I move them
> to sys/dev/xen/xen and xenbus to sys/dev/xen/xenbus ?

While I am not the one who can make this decision, I prefer to have MI 
code under sys/dev/xen.

Thing is, take if_xennet_xenbus.c for example, it relies on MD 
functions, like x86 barriers and P2M translations. As a consequence, I 
am not sure that sys/dev/xen is a good candidate; it stays pretty close 
to x86, and not suitable for sys/dev/xen yet.

My 2 cents.

--
Jean-Yves Migeon
jean-yves.migeon%espci.fr@localhost