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xen-devel
Re: [Xen-devel] [PATCH] change dom0 headers path
On Thu, Apr 20, 2006 at 02:00:07PM +0100, Keir Fraser wrote:
> >Fairly obviously, we need to clean up the hard-coded "linux" names used
> >in includes. This is the first step in a number of changes around
> >letting dom0 build on something other than Linux.
> >
> >What are the plans for these headers when the Linux kernel lives in
> >some
> >place other than the xen tree itself? We'd like to be able to share the
> >structure definitions, but our ioctl values will differ from Linux's...
>
> I'd prefer an interfacing library (or libraries) that can target Linux
> interfaces, Sun interfaces, etc.
My understanding is that libxc *is* that library.
> Maybe this only needs to be done for evtchn interfaces. I would have
> hoped that libxenctrl and libxenguest would hide privcmd interfaces. I
> wonder why so many things include <linux/privcmd.h>?
Code is using ioctl() where it should be using a helper function. I
don't mind looking into cleaning these things up at some point, but it
doesn't seem critical right now. But we'd like to get a firm grasp on
header naming so we can deal with the unfortunate two-way dependency
these headers have between dom0 and dom0 userspace.
IOW, I agree with you, but I think the patch needs to go in regardless.
In particular, something like my patch will still be needed, even if
it's just private to tools/libxc/.
regards,
john
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