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xen-devel
Re: [Xen-devel] [PATCH] change dom0 headers path
On Thu, Apr 20, 2006 at 03:31:09PM +0100, Keir Fraser wrote:
> >That's exactly what the patch as-is allows for: libxc/xen/dom0/ is only
> >created on Linux. If you'd prefer me to always create libxc/xen/linux/,
> >then make a dom0/ symlink point at it, that's fine, but it's kind of
> >pointless since it wouldn't get used on non-Linux anyway. It was also
> >one reason I was asking about plans for when linux sparse tree doesn't
> >exist.
> >
> >Or maybe I've got the wrong end of the stick; what are you proposing?
>
> Well, it depends how much commonality we think there will be between
> different OS's header files in future.
I suppose it also depends on the future of the ioctl() interface in
Linux, as Anthony pointed out to me. To a large degree how much sharing
can really happen depends strongly on how these interfaces end up. We
already have some differences in the xenbus driver to replace
/proc/xen/xsd_{kva,port}.
> If the details are hidden inside libxc then it wouldn't hurt to
> guarantee very little at the kernel and have libxc include from linux/
> or solaris/ directly depending on how it is targetted at compile time.
> I'm not keen on the name dom0/ anyway -- those headers (particularly
> evtchn.h) are applicable to other domains too.
So, something more like:
libxc/xc_linux.c
libxc/xc_solaris.c
libxc/xen/linux/
libxc/xen/solaris/
with:
1) all the stuff hidden back into libxc
2) Makefile gubbins to -I the right path and pick the right C file
This seems workable for us.
regards,
john
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