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RE: [Xen-devel] Mapping (potentially) non-contiguous physical pages tovirtual addresses under windows


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Thu, 25 Oct 2007 23:12:05 +1000
  • Delivery-date: Thu, 25 Oct 2007 06:12:42 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcgW+j94RHYwIMLYTKOPTvXkXTrcyQADkYyg
  • Thread-topic: [Xen-devel] Mapping (potentially) non-contiguous physical pages tovirtual addresses under windows

Cancel that. Looking through the Linux 'unmodified-drivers' code the
grant table stuff is done a little differently in a HVM domain, so the
problem I was having goes away.

James

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of James Harper
> Sent: Thursday, 25 October 2007 21:29
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] Mapping (potentially) non-contiguous physical
pages
> tovirtual addresses under windows
> 
> If I understand correctly, GNTTABOP_setup_table fills in an array with
> the PFN's of the frames that the hypervisor is using to hold the grant
> table entries. There is nothing I can see that says that these PFN's
are
> contiguous, so I suppose I have to assume that they aren't...
> 
> I can't seem to see a Windows DDK call that says "here's some PFN's,
> please map them and give me the starting address"... is anyone
familiar
> enough with Windows to offer some advice?
> 
> Thanks
> 
> James

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