RE: [Xen-devel] Passing a grant reference to another domain!

[Sandesh <sandesh.ahiremath@xxxxxxxxx>]

Hi jayraman,

>   I'm using CentOS and I'm not sure how to use libxc because there
> aren't any man pages or docs that I'm able to look into but thanks for
> the tip on how the kernel is accessed from libxc.
  libxc is a user-level control library which performs all the
hypercalls required for an operation. libxc actually makes an ioctl call
to /proc/privcmd interface of the dom0  which in turn makes the call to
the hypervisor function. Handled by drivers/xen/privcmd.c . 

If you are trying to get some info of a domain from the hypervisor, you
can directly add a new function in libxc which makes a do_domctl
hypercall and add a appropriate case in do_domctl function which
retrieves you the required function.

I don't know what you are trying to achieve. Its just a suggestion,
which you can explore on.

Thanks,
 Sandesh


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