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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-450d7fb8990sm115959275e9.32.2025.06.02.02.07.27 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 02 Jun 2025 02:07:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1748855248; x=1749460048; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=1eCV4vIb6ahPQ4VMmy3NO5u2F3ZquGRz6jC1wZD8HCo=; b=iHdhkBtEFqkbkUXeBIbtCl8LrjJBF4owJ3T8e4Zqmt5XUTeEDSTXSUiMpGs/G6Tn0z DSfLKuhBm+YX090oz+BRlU0wq8mm+MlyaMrul0YemXYzhPH6ASuUTtm80ez7fn9imHF0 O7WN0ygsVvPi43moA0R9SJIYk9xteEs/tdF7f4Qxy0yLGIer+VAMJq0KYF7URyphF1lj pHp4p0hP/JSpfQl/e9eN/wGhOnuCXpLDI7lYpfY1F7jXkh+4uFgoFrrDEbrGCoa6uS+H BAW85M+gUyKbJmDxDmDVRCZr2gT94okU9HtBeALIEGM5Y5bxev/KbOOmAwmcmcJVECfN t05A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748855248; x=1749460048; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=1eCV4vIb6ahPQ4VMmy3NO5u2F3ZquGRz6jC1wZD8HCo=; b=ixqE5e/6Mek76NcytKAzCBR+1pq3SynF3SIXK//yl0c885wNXOwp5OkEvCAgIHYtwY OI/JFBS6ZDzBuTNYD/IduRly9zSCIb4JIHnpcedCcUUWBd900M4/Yfm5WuamuXLLrmEu Kmj9cDfJxNOP9s5wG1hiPmDpRcURbj+g4W/kld7RY90OTAS2aDjhh3ORGln7MtyxC0WX BjNpPHIu0Z4jRIzn0BU82PZSH4DSmtmiBZvuQ7fkXanYjMiFFXy6wrNIRafSK6q0Nevj 5B+6BYv11uovjt7/jjnsxVceDzqm359ftelzI+haakozppMLiPUL/KzeUSzlDUcrHUCz ZwaQ== X-Gm-Message-State: AOJu0YxP+hYq6/6u4pk6XyA5f9q5pBsbeAi8xc6rozMP5AHojglDIUne DKEHRLJdUSbqUpM3EoYtvHDxQKFyB+ihb9COOymLkDAUfb2iqqZ9+MVSrSyC460YNNRiv0QnabP GzkJaR/8= X-Gm-Gg: ASbGnct1ldgUNSL0HOyi9kcW9qSZSpCHq50o/fTbdgRDKr6fzCITmuBDRBz4SxRLw6i l4Z+DlUc7dAv63kkq8E0VlWbQo8/VSjjXYcYS53lWTbgzyd11z+UdKoEpyMszD6Nkv64xaz722J 05mly9v9gLv8UjHcnQE8p3gNjtEd8VHl7497izqI1Q3ThvPdKxvk+2EBqE6aQpyjESZwfFm8oBv DIqqHQghg/WtWuTBHoZLoFQ2+dCuBmwdQ7O0z6EujFtpfgK7HnqZsM4auoe7oX+VtvKEjEKgpiv tI7G+TcJDhP3vpo4c4Blzg78gu/AFx9qFWalftUQ7kGhpZpcQFqALoRQM+vh3Fx3JAZ9HizT7TY WIQ5JiG4PTw3rHQFm33NYjyCruQ== X-Google-Smtp-Source: AGHT+IG/JDThagdN4WcU4bJZlqxBYP/4A4hRKPuK75hhGw0dEwqqjsH++f375AiVs0Ah1Q9UmYAYkw== X-Received: by 2002:a05:600c:3f92:b0:442:f904:1305 with SMTP id 5b1f17b1804b1-450d6b5999bmr115983235e9.6.1748855248625; Mon, 02 Jun 2025 02:07:28 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Igor Mammedov , Paolo Bonzini , Richard Henderson , Steve Sistare , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [RFC PATCH] system/cpus: Only kick running vCPUs Date: Mon, 2 Jun 2025 11:07:26 +0200 Message-ID: <20250602090726.41315-1-philmd@linaro.org> X-Mailer: git-send-email 2.49.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=philmd@linaro.org; helo=mail-wm1-x32c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1748855298514116600 We shouldn't kick a stopped vCPU, as it will be resumed. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- RFC: Better to assert and fix call sites? --- system/cpus.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/system/cpus.c b/system/cpus.c index d16b0dff989..4835e5ced48 100644 --- a/system/cpus.c +++ b/system/cpus.c @@ -494,6 +494,11 @@ void cpus_kick_thread(CPUState *cpu) void qemu_cpu_kick(CPUState *cpu) { qemu_cond_broadcast(cpu->halt_cond); + + if (!cpu_can_run(cpu)) { + return; + } + if (cpus_accel->kick_vcpu_thread) { cpus_accel->kick_vcpu_thread(cpu); } else { /* default */ --=20 2.49.0