[Xen-changelog] [xen-unstable] [XEN] Allow shutdown code to be set at most once per domain.

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

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID 107f74d363eacb4db0ad388a9042b745ebdd1d3f
# Parent  69efe6730fb1e2972f1413a877d88a6c09ca4451
[XEN] Allow shutdown code to be set at most once per domain.
SIgned-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 xen/common/domain.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r 69efe6730fb1 -r 107f74d363ea xen/common/domain.c
--- a/xen/common/domain.c       Fri Dec 01 09:01:04 2006 -0800
+++ b/xen/common/domain.c       Fri Dec 01 17:29:04 2006 +0000
@@ -283,8 +283,8 @@ void domain_shutdown(struct domain *d, u
     if ( d->domain_id == 0 )
         dom0_shutdown(reason);
 
-    d->shutdown_code = reason;
-    set_bit(_DOMF_shutdown, &d->domain_flags);
+    if ( !test_and_set_bit(_DOMF_shutdown, &d->domain_flags) )
+        d->shutdown_code = reason;
 
     for_each_vcpu ( d, v )
         vcpu_sleep_nosync(v);

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