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[Qemu-devel] [PULL 2/5] monitor: Check whether TCG is enabled before run

From: Dr. David Alan Gilbert (git)
Subject: [Qemu-devel] [PULL 2/5] monitor: Check whether TCG is enabled before running the "info jit" code
Date: Wed, 26 Apr 2017 14:57:04 +0100

From: Thomas Huth <address@hidden>

The "info jit" command currently aborts on Mac OS X with the message
"qemu_mutex_lock: Invalid argument" when running with "-M accel=qtest".
We should only call into the TCG code here if TCG has really been
enabled and initialized.

Signed-off-by: Thomas Huth <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Tested-by: Peter Maydell <address@hidden>
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
 monitor.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/monitor.c b/monitor.c
index a27dc8003f..6289e5256c 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1086,6 +1086,11 @@ static void hmp_info_registers(Monitor *mon, const QDict 
 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
+    if (!tcg_enabled()) {
+        error_report("JIT information is only available with accel=tcg");
+        return;
+    }
     dump_exec_info((FILE *)mon, monitor_fprintf);
     dump_drift_info((FILE *)mon, monitor_fprintf);

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