# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1165479903 -32400
# Node ID 0ee772ac96c5737ef3c220615c028aebe5a55601
# Parent  fd21ff4843cbb886c2b35f74ab0fe32a3309d1fa
allow foreign domain page mapping of DOMID_XEN/DOMID_IO.
DOMID_XEN is used by xenmon, xentrace.
PATCHNAME: allow_foreign_domain_page_mapping_domid_xen

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r fd21ff4843cb -r 0ee772ac96c5 xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c	Thu Dec 07 15:45:24 2006 +0900
+++ b/xen/arch/ia64/xen/mm.c	Thu Dec 07 17:25:03 2006 +0900
@@ -1295,11 +1295,13 @@ __dom0vp_add_physmap(struct domain* d, u
 
     if (unlikely(rd == d))
         goto out1;
-    if (is_gmfn) {
-        if (domid == DOMID_XEN || domid == DOMID_IO)
-            goto out1;
+    /*
+     * DOMID_XEN and DOMID_IO don't have their own p2m table.
+     * It can be considered that their p2m conversion is p==m.
+     */
+    if (likely(is_gmfn && domid != DOMID_XEN && domid != DOMID_IO))
         mfn = gmfn_to_mfn(rd, mfn_or_gmfn);
-    } else 
+    else 
         mfn = mfn_or_gmfn;
     if (unlikely(!mfn_valid(mfn) || get_page(mfn_to_page(mfn), rd) == 0))
         goto out1;