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[Xen-changelog] [xen-unstable] hvmloader: clear the whole shared-info pa
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| Subject: | [Xen-changelog] [xen-unstable] hvmloader: clear the whole shared-info page when shutting down xenbus |
| From: | Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx> |
| Date: | Thu, 22 Jul 2010 07:30:19 -0700 |
| Delivery-date: | Thu, 22 Jul 2010 07:30:26 -0700 |
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1279808365 -3600
# Node ID bba5ac2066c8dc2896ba6253813a06de74309c23
# Parent e8dbc1262f52f0d710dc73e43aafc42ed9d7e31b
hvmloader: clear the whole shared-info page when shutting down xenbus
since the contents might be in the wrong word-size for later users.
Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
---
tools/firmware/hvmloader/xenbus.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff -r e8dbc1262f52 -r bba5ac2066c8 tools/firmware/hvmloader/xenbus.c
--- a/tools/firmware/hvmloader/xenbus.c Wed Jul 21 09:02:10 2010 +0100
+++ b/tools/firmware/hvmloader/xenbus.c Thu Jul 22 15:19:25 2010 +0100
@@ -63,9 +63,8 @@ void xenbus_shutdown(void)
* having used the rings. */
memset(rings, 0, sizeof *rings);
- /* Clear the xenbus event-channel too */
- get_shared_info()->evtchn_pending[event / sizeof (unsigned long)]
- &= ~(1UL << ((event % sizeof (unsigned long))));
+ /* Clear the event-channel state too. */
+ memset(get_shared_info(), 0, PAGE_SIZE);
rings = NULL;
}
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