Re: [Xen-devel] Mapping pages from dom0

[Jacob Gorm Hansen <jacobg@xxxxxxx>]

Jacob Gorm Hansen wrote:
> Mark Williamson wrote:
>
> > > I am mapping some pages in a domU from dom0 userspace. Doing that once I
> > > know the page numbers is fairly trivial, but what is the recommended way
> > > of communicating one or more page numbers from domU to dom0, hopefully
> > > without having to modify xend?
> >
> >
> > Hrrrm.  There was talk of a simple generic control message that could 
> > be used for this sort of thing but I'm not sure if it's been implemented.
>
> Sad. I tried sticking this at the last four bytes of the shared_info 
> page, but apparently that one gets cleared every now and then :-(
Anyway, for now I guess I can just extend the shared_info_t struct and 
things should work, but in the longer run it might be nice to have some 
kind of simple mechanism for doing this stuff.
Jacob


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