Should Xen be a sub-arch or a build option?

[Rink Springer]

Hi Kip,

On Sun, Oct 21, 2007 at 08:56:35PM -0700, Kip Macy wrote:
>  - A shared directory as most of the bits will be shared:
>       - sys/xen          - common bits
>       - sys/xen/i386   - i386 specific bits
>       - sys/xen/amd64 - amd64 specific bits

This is what I'd prefer - i386/amd64 as separate dir under sys/xen.

> It could, in principle, also be done as a build option. I'm not sure
> how well it would mesh with the existing build tools as there are a
> number of files that I would not want to compile in (e.g. code that
> talked directly to the BIOS) that is normally built by default. In
> that case I would structure it:

I wouldn't go for a build option; I'd prefer to make it seperate, as I
fear making it a seperate build option would introduce needless clutter
which can easily be avoided.

> There is also a question of where the drivers should be put. I propose
> that they would be put under sys/dev/xen, so you would have e.g.
> sys/dev/xen/xennet, sys/dev/xen/xenblk etc.

That sounds fine to me.

-- 
Rink P.W. Springer                                - http://rink.nu
"root is always right" -- the kernel