commit 6aaa24f9d494a46c0a5aa5c7202cf50b3a7075ef
author Emilio G. Cota <cota@braap.org> Tue Jan 15 14:47:54 2019 -0500
committer Paolo Bonzini <pbonzini@redhat.com> Tue Feb 05 16:50:16 2019 +0100
tree 4a46a4071a04a258de35937f9083be04a0b25a23
parent 8fd3a9b81d29abf16f9cadfdcb55dd3a229ab12a

cpu-exec: reset BQL after longjmp in cpu_exec_step_atomic

Just like we do in cpu_exec().

Reported-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

accel/tcg/cpu-exec.c

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 49b3259..fab30af 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -266,6 +266,9 @@
 #ifndef CONFIG_SOFTMMU
         tcg_debug_assert(!have_mmap_lock());
 #endif
+        if (qemu_mutex_iothread_locked()) {
+            qemu_mutex_unlock_iothread();
+        }
         assert_no_pages_locked();
     }