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Re: [Xen-devel] Grant tables from dom0 userspace?

  • To: "Jacob Gorm Hansen" <jacobg@xxxxxxx>
  • From: "Christopher Clark" <christopher.clark@xxxxxxxxxxxx>
  • Date: Thu, 9 Mar 2006 18:10:19 +0000
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 09 Mar 2006 18:11:07 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>


Grant tables aren't the right interface for use from userspace, which
is why tools/libxc/xc_gnttab.c was removed. You should probably just
write a kernel module to do the mapping for you using grant tables and
then expose a custom interface to userspace from the module to trigger
the mapping as you need.


On 3/9/06, Jacob Gorm Hansen <jacobg@xxxxxxx> wrote:
> hi,
> I would like to share some pages between my domU graphics frontend
> device, and the backend which runs in userspace in dom0. Right now I
> am doing this with my own scheme, but presumably grant tables would be
> the correct solution.
> Is it possible to use grant tables from dom0 userspace? There used to
> be a file called tools/libxc/xc_gnttab.c but that seems to be gone
> now.
> Jacob
> _______________________________________________
> Xen-devel mailing list
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