[Xen-changelog] Disable pagetable pinning for shadow-mode-refcount guests.

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

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 066ac36725f3993967425f4d5114605fab8e96c2
# Parent  f84d5cdd9895206af83fbe7798f026b140e7b68f
Disable pagetable pinning for shadow-mode-refcount guests.

Signed-off-by: Steven Smith <sos22@xxxxxxxxx>
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r f84d5cdd9895 -r 066ac36725f3 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Thu Feb 23 13:43:45 2006
+++ b/xen/arch/x86/mm.c Thu Feb 23 13:50:00 2006
@@ -1776,7 +1776,7 @@
 
         pin_page:
             if ( shadow_mode_refcounts(FOREIGNDOM) )
-                type = PGT_writable_page;
+                break;
 
             okay = get_page_and_type_from_pagenr(mfn, type, FOREIGNDOM);
             if ( unlikely(!okay) )
@@ -1811,6 +1811,9 @@
             goto pin_page;
 
         case MMUEXT_UNPIN_TABLE:
+            if ( shadow_mode_refcounts(d) )
+                break;
+
             if ( unlikely(!(okay = get_page_from_pagenr(mfn, d))) )
             {
                 MEM_LOG("Mfn %lx bad domain (dom=%p)",

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