diff options
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 1bd3d72002..85f14d4194 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -568,15 +568,13 @@ static inline void cpu_loop_exec_tb(CPUState *cpu, TranslationBlock *tb, *tb_exit = ret & TB_EXIT_MASK; switch (*tb_exit) { case TB_EXIT_REQUESTED: - /* Something asked us to stop executing - * chained TBs; just continue round the main - * loop. Whatever requested the exit will also - * have set something else (eg exit_request or - * interrupt_request) which we will handle - * next time around the loop. But we need to - * ensure the zeroing of tcg_exit_req (see cpu_tb_exec) - * comes before the next read of cpu->exit_request - * or cpu->interrupt_request. + /* Something asked us to stop executing chained TBs; just + * continue round the main loop. Whatever requested the exit + * will also have set something else (eg interrupt_request) + * which we will handle next time around the loop. But we + * need to ensure the tcg_exit_req read in generated code + * comes before the next read of cpu->exit_request or + * cpu->interrupt_request. */ smp_mb(); *last_tb = NULL; @@ -630,10 +628,6 @@ int cpu_exec(CPUState *cpu) rcu_read_lock(); - if (unlikely(atomic_mb_read(&exit_request))) { - cpu->exit_request = 1; - } - cc->cpu_exec_enter(cpu); /* Calculate difference between guest clock and host clock. |