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From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Igor Mammedov" <imammedo@redhat.com>
Subject: [PATCH 13/19] cpus: remove TCG-ism from cpu_exit()
Date: Mon,  8 Sep 2025 12:12:35 +0200	[thread overview]
Message-ID: <20250908101241.2110068-14-pbonzini@redhat.com> (raw)
In-Reply-To: <20250908101241.2110068-1-pbonzini@redhat.com>

Now that TCG has its own kick function, make cpu_exit() do the right kick
for all accelerators.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/core/cpu-common.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c
index 42463e6258d..41a339903ca 100644
--- a/hw/core/cpu-common.c
+++ b/hw/core/cpu-common.c
@@ -76,9 +76,7 @@ void cpu_exit(CPUState *cpu)
 {
     /* Ensure cpu_exec will see the reason why the exit request was set.  */
     qatomic_store_release(&cpu->exit_request, true);
-    /* Ensure cpu_exec will see the exit request after TCG has exited.  */
-    smp_wmb();
-    qatomic_set(&cpu->neg.icount_decr.u16.high, -1);
+    qemu_cpu_kick(cpu);
 }
 
 static int cpu_common_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg)
-- 
2.51.0



  parent reply	other threads:[~2025-09-08 10:16 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-08 10:12 [PATCH v3 00/19] accel, cpus: clean up cpu->exit_request Paolo Bonzini
2025-09-08 10:12 ` [PATCH 01/19] target/ppc: limit cpu_interrupt_exittb to system emulation Paolo Bonzini
2025-09-08 10:12 ` [PATCH 02/19] target/sparc: limit cpu_check_irqs " Paolo Bonzini
2025-09-08 10:12 ` [PATCH 03/19] target/i386: limit a20 " Paolo Bonzini
2025-09-08 10:12 ` [PATCH 04/19] target-arm: remove uses of cpu_interrupt() for user-mode emulation Paolo Bonzini
2025-09-08 10:12 ` [PATCH 05/19] user-exec: remove cpu_interrupt() stub Paolo Bonzini
2025-09-08 10:12 ` [PATCH 06/19] treewide: clear bits of cs->interrupt_request with cpu_reset_interrupt() Paolo Bonzini
2025-09-08 10:12 ` [PATCH 07/19] cpu-common: use atomic access for interrupt_request Paolo Bonzini
2025-09-08 10:12 ` [PATCH 08/19] cpus: document that qemu_cpu_kick() can be used for BQL-less operation Paolo Bonzini
2025-09-08 10:12 ` [PATCH 09/19] accel: use store_release/load_acquire for cross-thread exit_request Paolo Bonzini
2025-09-08 10:12 ` [PATCH 10/19] accel: use atomic accesses for exit_request Paolo Bonzini
2025-09-08 10:12 ` [PATCH 11/19] accel/tcg: create a thread-kick function for TCG Paolo Bonzini
2025-09-08 10:12 ` [PATCH 12/19] accel/tcg: inline cpu_exit() Paolo Bonzini
2025-09-08 10:12 ` Paolo Bonzini [this message]
2025-09-08 10:12 ` [PATCH 14/19] cpus: properly kick CPUs out of inner execution loop Paolo Bonzini
2025-09-10  7:13   ` Richard Henderson
2025-09-08 10:12 ` [PATCH 15/19] treewide: rename qemu_wait_io_event/qemu_wait_io_event_common Paolo Bonzini
2025-09-10  7:14   ` Richard Henderson
2025-09-08 10:12 ` [PATCH 16/19] bsd-user, linux-user: introduce qemu_process_cpu_events Paolo Bonzini
2025-09-08 10:12 ` [PATCH 17/19] cpus: clear exit_request in qemu_process_cpu_events Paolo Bonzini
2025-09-08 10:12 ` [PATCH 18/19] accel: make all calls to qemu_process_cpu_events look the same Paolo Bonzini
2025-09-08 10:12 ` [PATCH 19/19] tcg/user: do not set exit_request gratuitously Paolo Bonzini

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