[PATCH 23/23] libxl: suspend: Apply guest timeout in evtchn case

[Ian Jackson <ian.jackson@eu.citrix.com>]

When negotiating guest suspend via the evtchn ("fast") protocol,
the guest may still fail to respond.

So set the timeout.  The existing error path will already properly
tear down our (event channel) wait.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: Ian Campbell <ian.campbell@citrix.com>
---
 tools/libxl/libxl_dom.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index c431a2d..820ec3a 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -1081,6 +1081,11 @@ static void domain_suspend_callback_common(libxl__egc *egc,
         rc = libxl__ev_evtchn_wait(gc, &dss->guest_evtchn);
         if (rc) goto err;
 
+        rc = libxl__ev_time_register_rel(gc, &dss->guest_timeout,
+                                         suspend_common_wait_guest_timeout,
+                                         60*1000);
+        if (rc) goto err;
+
         return;
     }
 
-- 
1.7.10.4