commit d7a0f71d9aac33e58d39fdbe4861d440af44fa8b
author Victor CLEMENT <victor.clement@openwide.fr> Fri May 29 17:14:06 2015 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Fri Jun 05 17:10:00 2015 +0200
tree 49d5f894556e14d0bfbc9355702f8912e19120c3
parent f1f4b57e88ff7c9cb20b074ff6106fd8f4397baa

icount: print a warning if there is no more deadline in sleep=no mode

While qemu is running in sleep=no mode, a warning will be printed
when no timer deadline is set.
As this mode is intended for getting deterministic virtual time, if no
timer is set on the virtual clock this determinism is broken.

Signed-off-by: Victor CLEMENT <victor.clement@openwide.fr>
Message-Id: <1432912446-9811-4-git-send-email-victor.clement@openwide.fr>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

cpus.c

diff --git a/cpus.c b/cpus.c
index 4e90e63..f38b858 100644
--- a/cpus.c
+++ b/cpus.c
@@ -419,6 +419,11 @@
     clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT);
     deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
     if (deadline < 0) {
+        static bool notified;
+        if (!icount_sleep && !notified) {
+            error_report("WARNING: icount sleep disabled and no active timers");
+            notified = true;
+        }
         return;
     }