[XenPPC] [xenppc-unstable] [XEN][POWERPC] Remove pfn2mfn() now that it is understood

[Xen patchbot-xenppc-unstable <patchbot-xenppc-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
# Node ID 7af3636da4b955e556af19af91b03633b565cce2
# Parent  3583d270140501b208f08335e10105d3f05c52d8
[XEN][POWERPC] Remove pfn2mfn() now that it is understood

It is possible (thank you xm-test) to initiate a grant copy to a page
belonging to a dying domain, the page end up being owned by nobody
which is what the original test asserted.

Signed-off-by: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
---
 xen/arch/powerpc/mm.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletion(-)

diff -r 3583d2701405 -r 7af3636da4b9 xen/arch/powerpc/mm.c
--- a/xen/arch/powerpc/mm.c     Sun Oct 08 11:52:28 2006 -0400
+++ b/xen/arch/powerpc/mm.c     Tue Oct 10 09:09:38 2006 -0400
@@ -416,7 +416,18 @@ ulong pfn2mfn(struct domain *d, ulong pf
                 cur_pfn += pe_pages;
             }
         }
-        BUG_ON(t != PFN_TYPE_NONE && page_get_owner(mfn_to_page(mfn)) != d);
+#ifdef DEBUG
+        if (t != PFN_TYPE_NONE &&
+            (d->domain_flags & DOMF_dying) &&
+            page_get_owner(mfn_to_page(mfn)) != d) {
+            printk("%s: page type: %d owner Dom[%d]:%p expected Dom[%d]:%p\n",
+                   __func__, t,
+                   page_get_owner(mfn_to_page(mfn))->domain_id,
+                   page_get_owner(mfn_to_page(mfn)),
+                   d->domain_id, d);
+            BUG();
+        }
+#endif
     }
 
     if (t == PFN_TYPE_NONE) {

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