tree 4ef80980b91fe3b59b4a3ff523f18fb1546f7249
parent 9a709f06c87043856307ce824b2ba47e0fdb7621
author Bauerchen <bauerchen@tencent.com> 1586140614 +0800
committer Paolo Bonzini <pbonzini@redhat.com> 1586609360 -0400

oslib-posix: take lock before qemu_cond_broadcast

In touch_all_pages, if the mutex is not taken around qemu_cond_broadcast,
qemu_cond_broadcast may be called before all touch page threads enter
qemu_cond_wait. In this case, the touch page threads wait forever for the
main thread to wake them up, causing a deadlock.

Signed-off-by: Bauerchen <bauerchen@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>