[Xen-changelog] [xen-unstable] [XEN] Shadow: ignore shadow operations on dying domains

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

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
# Date 1173193340 0
# Node ID af6293fd313490d02ffc11a53f211d1c454a8b05
# Parent  200d13363a38cb84ab1a75aca6d0a31f9390ecaa
[XEN] Shadow: ignore shadow operations on dying domains
so that they don't get confused by the way that shadow_teardown()
leaves some of the mode bits set after releasing the shadow resources.
Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
---
 xen/arch/x86/mm/shadow/common.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletion(-)

diff -r 200d13363a38 -r af6293fd3134 xen/arch/x86/mm/shadow/common.c
--- a/xen/arch/x86/mm/shadow/common.c   Tue Mar 06 13:41:05 2007 +0000
+++ b/xen/arch/x86/mm/shadow/common.c   Tue Mar 06 15:02:20 2007 +0000
@@ -2977,8 +2977,16 @@ int shadow_domctl(struct domain *d,
 
     if ( unlikely(d == current->domain) )
     {
-        gdprintk(XENLOG_INFO, "Don't try to do a shadow op on yourself!\n");
+        gdprintk(XENLOG_INFO, "Dom %u tried to do a shadow op on itself.\n",
+                 d->domain_id);
         return -EINVAL;
+    }
+
+    if ( unlikely(test_bit(_DOMF_dying, &d->domain_flags)) )
+    {
+        gdprintk(XENLOG_INFO, "Ignoring shadow op on dying domain %u\n",
+                 d->domain_id);
+        return 0;
     }
 
     switch ( sc->op )

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