[Xen-changelog] [xen-unstable] [XEN] Don't use shadow linear maps in sh_set_toplevel_shadow()

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

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
# Node ID d6f54576ac229d3c87d53e8242d45e4695695f0a
# Parent  8f09c7d6bad1333fe75e7e77f3957aca0ec70579
[XEN] Don't use shadow linear maps in sh_set_toplevel_shadow()
because they will not be there.
Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
---
 xen/arch/x86/mm/shadow/multi.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff -r 8f09c7d6bad1 -r d6f54576ac22 xen/arch/x86/mm/shadow/multi.c
--- a/xen/arch/x86/mm/shadow/multi.c    Tue Nov 14 10:56:07 2006 +0000
+++ b/xen/arch/x86/mm/shadow/multi.c    Tue Nov 14 11:47:26 2006 +0000
@@ -3266,8 +3266,9 @@ sh_set_toplevel_shadow(struct vcpu *v,
     }
     else
     {
-        /* This guest MFN is a pagetable.  Must revoke write access. */
-        if ( shadow_remove_write_access(v, gmfn, GUEST_PAGING_LEVELS, 0) != 0 )
+        /* This guest MFN is a pagetable.  Must revoke write access 
+         * (and can't use heuristics because we have no linear map here). */
+        if ( shadow_remove_write_access(v, gmfn, 0, 0) != 0 )
             flush_tlb_mask(v->domain->domain_dirty_cpumask); 
         /* Make sure there's enough free shadow memory. */
         shadow_prealloc(d, SHADOW_MAX_ORDER); 

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