On 18/11/22 10:18, Richard Henderson wrote:
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
Cc: Philippe Mathieu-Daudé <phi...@linaro.org>
Cc: Jiaxun Yang <jiaxun.y...@flygoat.com>
---
  hw/mips/mips_int.c | 11 +----------
  1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/hw/mips/mips_int.c b/hw/mips/mips_int.c
index 2db5e10fe0..73437cd90f 100644
--- a/hw/mips/mips_int.c
+++ b/hw/mips/mips_int.c
@@ -32,17 +32,12 @@ static void cpu_mips_irq_request(void *opaque, int irq, int 
level)
      MIPSCPU *cpu = opaque;
      CPUMIPSState *env = &cpu->env;
      CPUState *cs = CPU(cpu);
-    bool locked = false;
if (irq < 0 || irq > 7) {
          return;
      }
- /* Make sure locking works even if BQL is already held by the caller */
-    if (!qemu_mutex_iothread_locked()) {
-        locked = true;
-        qemu_mutex_lock_iothread();
-    }
+    QEMU_IOTHREAD_LOCK_GUARD();
if (level) {
          env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
@@ -59,10 +54,6 @@ static void cpu_mips_irq_request(void *opaque, int irq, int 
level)
      } else {
          cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
      }
-
-    if (locked) {
-        qemu_mutex_unlock_iothread();
-    }
  }

I'd rather have a macro similar to WITH_RCU_READ_LOCK_GUARD()
so the locked context is obvious:

  WITH_QEMU_IOTHREAD_LOCK_GUARD() {
      ...
  }

Anyhow:
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>


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