[Qemu-devel] [PATCH v5 04/13] cpus: Wrap mutex used to protect CPU work

["Alex Bennée" <alex.bennee@linaro.org>]

From: Sergey Fedorov <serge.fdrv@gmail.com>

This will be useful to enable CPU work on user mode emulation.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 cpus.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/cpus.c b/cpus.c
index 04687c8..f80ed2a 100644
--- a/cpus.c
+++ b/cpus.c
@@ -910,6 +910,11 @@ void qemu_init_cpu_loop(void)
     qemu_thread_get_self(&io_thread);
 }
 
+static QemuMutex *qemu_get_cpu_work_mutex(void)
+{
+    return &qemu_global_mutex;
+}
+
 static void queue_work_on_cpu(CPUState *cpu, struct qemu_work_item *wi)
 {
     qemu_mutex_lock(&cpu->work_mutex);
@@ -943,7 +948,7 @@ void run_on_cpu(CPUState *cpu, run_on_cpu_func func, void *data)
     while (!atomic_mb_read(&wi.done)) {
         CPUState *self_cpu = current_cpu;
 
-        qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex);
+        qemu_cond_wait(&qemu_work_cond, qemu_get_cpu_work_mutex());
         current_cpu = self_cpu;
     }
 }
-- 
2.7.4