# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1167901217 -32400
# Node ID 9e1ab89735c2b20c14783633609dcdaa2347d7e5
# Parent  3b02c5420099e123c600e1fb745c29b6e2a183eb
fix dom0vp_expose_p2m. It assumes that memory is populated not-spasely.
However with dom0 builder modification this assumption became not-always true.
Make dom0vp_expose_p2m() allow spasely populated memory.
PATCHNAME: spase_memory_dom0vp_expose_p2m

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

diff -r 3b02c5420099 -r 9e1ab89735c2 xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c	Wed Dec 27 18:43:12 2006 +0900
+++ b/xen/arch/ia64/xen/mm.c	Thu Jan 04 18:00:17 2007 +0900
@@ -1544,8 +1544,7 @@ dom0vp_expose_p2m(struct domain* d,
     for (i = 0; i < expose_num_pfn / PTRS_PER_PTE + 1; i++) {
         assign_pte = lookup_noalloc_domain_pte(d, (assign_start_gpfn + i) <<
                                                PAGE_SHIFT);
-        BUG_ON(assign_pte == NULL);
-        if (pte_present(*assign_pte)) {
+        if (assign_pte == NULL || pte_present(*assign_pte)) {
             continue;
         }
         if (expose_p2m_page(d, (assign_start_gpfn + i) << PAGE_SHIFT,