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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, philmd@linaro.org, alex.bennee@linaro.org
Subject: [PATCH v2 2/7] hw/mips: Use WITH_QEMU_IOTHREAD_LOCK in cpu_mips_irq_request
Date: Tue, 22 Nov 2022 12:57:34 -0800	[thread overview]
Message-ID: <20221122205739.603510-3-richard.henderson@linaro.org> (raw)
In-Reply-To: <20221122205739.603510-1-richard.henderson@linaro.org>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 hw/mips/mips_int.c | 37 ++++++++++++++-----------------------
 1 file changed, 14 insertions(+), 23 deletions(-)

diff --git a/hw/mips/mips_int.c b/hw/mips/mips_int.c
index 2db5e10fe0..c22598d353 100644
--- a/hw/mips/mips_int.c
+++ b/hw/mips/mips_int.c
@@ -32,36 +32,27 @@ 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();
-    }
+    WITH_QEMU_IOTHREAD_LOCK() {
+        if (level) {
+            env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
+        } else {
+            env->CP0_Cause &= ~(1 << (irq + CP0Ca_IP));
+        }
 
-    if (level) {
-        env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
-    } else {
-        env->CP0_Cause &= ~(1 << (irq + CP0Ca_IP));
-    }
+        if (kvm_enabled() && (irq == 2 || irq == 3)) {
+            kvm_mips_set_interrupt(cpu, irq, level);
+        }
 
-    if (kvm_enabled() && (irq == 2 || irq == 3)) {
-        kvm_mips_set_interrupt(cpu, irq, level);
-    }
-
-    if (env->CP0_Cause & CP0Ca_IP_mask) {
-        cpu_interrupt(cs, CPU_INTERRUPT_HARD);
-    } else {
-        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
-    }
-
-    if (locked) {
-        qemu_mutex_unlock_iothread();
+        if (env->CP0_Cause & CP0Ca_IP_mask) {
+            cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+        } else {
+            cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+        }
     }
 }
 
-- 
2.34.1



  parent reply	other threads:[~2022-11-22 21:00 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-22 20:57 [PATCH v2 0/7] main-loop: Introduce QEMU_IOTHREAD_LOCK_GUARD Richard Henderson
2022-11-22 20:57 ` [PATCH v2 1/7] qemu/main-loop: Introduce QEMU_IOTHREAD_LOCK_GUARD, WITH_QEMU_IOTHREAD_LOCK Richard Henderson
2022-11-22 23:20   ` Philippe Mathieu-Daudé
2022-11-23  2:09   ` Richard Henderson
2022-11-22 20:57 ` Richard Henderson [this message]
2022-11-22 20:57 ` [PATCH v2 3/7] target/ppc: Use QEMU_IOTHREAD_LOCK_GUARD in ppc_maybe_interrupt Richard Henderson
2022-11-22 20:57 ` [PATCH v2 4/7] target/ppc: Use QEMU_IOTHREAD_LOCK_GUARD in cpu_interrupt_exittb Richard Henderson
2022-11-22 20:57 ` [PATCH v2 5/7] hw/ppc: Use QEMU_IOTHREAD_LOCK_GUARD in ppc_set_irq Richard Henderson
2022-11-22 20:57 ` [PATCH v2 6/7] target/riscv: Use QEMU_IOTHREAD_LOCK_GUARD in riscv_cpu_update_mip Richard Henderson
2022-11-22 20:57 ` [PATCH v2 7/7] accel/tcg: Use WITH_QEMU_IOTHREAD_LOCK in io_readx/io_writex Richard Henderson

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