[PULL 11/61] oslib-posix: initialize mutex and condition variable

[Paolo Bonzini]

The mutex and condition variable were never initialized, causing
-mem-prealloc to abort with an assertion failure.

Fixes: 037fb5eb3941c80a2b7c36a843e47207ddb004d4
Reported-by: Marc Hartmayer <address@hidden>
Cc: bauerchen <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 util/oslib-posix.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 897e8f3..4dd6d7d 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -466,10 +466,17 @@ static inline int get_memset_num_threads(int smp_cpus)
 static bool touch_all_pages(char *area, size_t hpagesize, size_t numpages,
                             int smp_cpus)
 {
+    static gsize initialized = 0;
     size_t numpages_per_thread, leftover;
     char *addr = area;
     int i = 0;
 
+    if (g_once_init_enter(&initialized)) {
+        qemu_mutex_init(&page_mutex);
+        qemu_cond_init(&page_cond);
+        g_once_init_leave(&initialized, 1);
+    }
+
     memset_thread_failed = false;
     threads_created_flag = false;
     memset_num_threads = get_memset_num_threads(smp_cpus);
-- 
1.8.3.1