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[PATCH] mem-prealloc: initialize cond and mutex

From: Christian Borntraeger
Subject: [PATCH] mem-prealloc: initialize cond and mutex
Date: Fri, 6 Mar 2020 03:50:14 -0500

Guests with mem-prealloc do fail with
qemu-system-s390x: /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:76: 
qemu_mutex_lock_impl: Assertion `mutex->initialized' failed.
qemu-system-s390x: /home/cborntra/REPOS/qemu/util/qemu-thread-posix.c:161: 
qemu_cond_broadcast: Assertion `cond->initialized' failed.

Let us initialize cond and mutex.

Cc: bauerchen <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Reported-by: Marc Hartmayer <address@hidden>
Fixes: 037fb5eb3941 ("mem-prealloc: optimize large guest startup")
Signed-off-by: Christian Borntraeger <address@hidden>
 util/oslib-posix.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 897e8f3ba6..52650183d3 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -470,6 +470,8 @@ static bool touch_all_pages(char *area, size_t hpagesize, 
size_t numpages,
     char *addr = area;
     int i = 0;
+    qemu_cond_init(&page_cond);
+    qemu_mutex_init(&page_mutex);
     memset_thread_failed = false;
     threads_created_flag = false;
     memset_num_threads = get_memset_num_threads(smp_cpus);

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