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[Xen-devel] [PATCH] Fix stale shared mem key

from [Ben Guthro]

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To:	xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Robert Phillips <rphillips@xxxxxxxxxxxxxxx>
Subject:	[Xen-devel] [PATCH] Fix stale shared mem key
From:	Ben Guthro <bguthro@xxxxxxxxxxxxxxx>
Date:	Wed, 24 Oct 2007 17:00:06 -0400
Delivery-date:	Wed, 24 Oct 2007 14:18:35 -0700
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In xenstore_process_logdirty_event(), if a stale shared memory key
is encountered reset 'seg' to NULL so the shared memory
initialization can be retried later.

Signed-off-by: Ben Guthro <bguthro@xxxxxxxxxxxxxx>
Signed-off-by: Robert Phillips <rphillips@xxxxxxxxxxxxxxx>

diff -r 118a21c66fd5 tools/ioemu/xenstore.c
--- a/tools/ioemu/xenstore.c    Mon Oct 22 21:06:11 2007 +0100
+++ b/tools/ioemu/xenstore.c    Wed Oct 24 16:24:39 2007 -0400
@@ -318,6 +318,7 @@ void xenstore_process_logdirty_event(voi
         if (logdirty_bitmap_size != *(uint32_t *)seg) {
             fprintf(logfile, "Log-dirty: got %u, calc %lu\n", 
                     *(uint32_t *)seg, logdirty_bitmap_size);
+            seg = NULL; /* Stale key: wait for next watch */
             return;
         }

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