accel/tcg: Clear exit_request once in tcg_cpu_exec()

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250701144017.43487-62-philmd@linaro.org>

accel/tcg/tcg-accel-ops-mttcg.c

@@ -113,7 +113,6 @@ static void *mttcg_cpu_thread_fn(void *arg)
             }
         }
 
-        qatomic_set_mb(&cpu->exit_request, 0);
         qemu_wait_io_event(cpu);
     } while (!cpu->unplug || cpu_can_run(cpu));
 

accel/tcg/tcg-accel-ops.c

@@ -80,6 +80,9 @@ int tcg_cpu_exec(CPUState *cpu)
     cpu_exec_start(cpu);
     ret = cpu_exec(cpu);
     cpu_exec_end(cpu);
+
+    qatomic_set_mb(&cpu->exit_request, 0);
+
     return ret;
 }