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[Xen-devel] No P2M mapping == pagetype == XEN_DOMCTL_PFINFO_XTAB?

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "Mike Sun" <msun@xxxxxxxxxx>
  • Date: Mon, 29 Sep 2008 13:35:11 -0400
  • Delivery-date: Mon, 29 Sep 2008 10:35:36 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

For an HVM domain, if a given pfn has a pagetype of
XEN_DOMCTL_PFINFO_XTAB as returned by xc_map_foreign_batch(), does
this mean that pfn is not not in the HVM guest's pseudo-physical
map/have a valid P2M entry?

I'm having difficulty understanding page types for HVM domains.  If a
pfn for an HVM domain is of the type XEN_DOMCTL_PFINFO_XTAB, can it
later become a valid page?  And what about the reverse case?

Any help would be much appreciated, thanks,

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