From nobody Tue Feb 10 13:17:21 2026 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 549632459E5; Fri, 30 Jan 2026 02:59:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769741998; cv=none; b=hia7Z2qVmS2oh6TXkDZkQBWSMau5NxBGApqp3P+6+1rR46nGfMdtXVxBFINcHQmmVMvyN+WVFLp31gd4273MZI7dzLA5bVmVdSvMpph6PkgTxrb52xjryneSgd5nXkC9XSE9a7D0RqobHWuISEkNT5doEMt43+iTfOIxnO0V1jI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769741998; c=relaxed/simple; bh=a9O2wu6g+zyhpMf66SIUAErNX2YYt0+X+wWqcH+JlOw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V/A3IdCBt1VWR4C9D7wbVa5Pvzfim1Z1AIcXJkKkVxxXEqZ3l991ZNNo+v8yDORo89xt3obEIIPsESzMkSZU/YsZWSDevMsFP+G2+c7Jc+fFAWgrJCY25fL7b2GgMZQNHLHZB2RGJniJwdsVnIACP16Bb1vjAtc5XjKRMD6KH8g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.40.57.136]) by gateway (Coremail) with SMTP id _____8CxLMOoHnxp+SQOAA--.46556S3; Fri, 30 Jan 2026 10:59:52 +0800 (CST) Received: from localhost.localdomain (unknown [10.40.57.136]) by front1 (Coremail) with SMTP id qMiowJDxaeCfHnxpR_Q5AA--.45699S5; Fri, 30 Jan 2026 10:59:51 +0800 (CST) From: Tianyang Zhang To: chenhuacai@kernel.org, kernel@xen0n.name, corbet@lwn.net, alexs@kernel.org, si.yanteng@linux.dev, tglx@linutronix.de, jiaxun.yang@flygoat.com, maobibo@loongson.cn Cc: loongarch@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Tianyang Zhang Subject: [PATCH v9 3/4] irqchip/loongarch-avec.c:return IRQ_SET_MASK_OK_DONE when keep affinity Date: Fri, 30 Jan 2026 10:59:38 +0800 Message-ID: <20260130025941.2140582-4-zhangtianyang@loongson.cn> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20260130025941.2140582-1-zhangtianyang@loongson.cn> References: <20260130025941.2140582-1-zhangtianyang@loongson.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJDxaeCfHnxpR_Q5AA--.45699S5 X-CM-SenderInfo: x2kd0wxwld05hdqjqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj93XoW7tF4UCF4rKF4fAryfuryrXwc_yoW8CF4rpF W7Ca4qyr4ktF1UWF4DWa18ZryUCr93W3y7K3WSk343ZrZ8G3yqgr1ay34F9FyrCr4kC3W2 vrsFqrW5uas8AagCm3ZEXasCq-sJn29KB7ZKAUJUUUU3529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUm0b4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1q6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAF wI0_Cr1j6rxdM2kKe7AKxVWUAVWUtwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07 AIYIkI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWr XVW3AwAv7VC2z280aVAFwI0_Gr1j6F4UJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2 Ij64vIr41lF7xvrVCFI7AF6II2Y40_Zr0_Gr1UMxkF7I0En4kS14v26r126r1DMxAIw28I cxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI1I0E14v26r126r1DMI8I3I 0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWU tVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26F1j6w1UMIIF0xvE2Ix0cI8IcV CY1x0267AKxVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE 14v26r4UJVWxJr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBIdaVFxhVjvjDU0x ZFpf9x07bUfHUUUUUU= Content-Type: text/plain; charset="utf-8" When it is detected in avecintc_set_affinity that the current affinity remains valid, the return value is modified to IRQ_SET_MASK_OK_DONE. After the introduction of redirect-domain, for each interrupt source, avecintc-domain only provides the CPU/interrupt vector, while redirect-doma= in provides other operations to synchronize interrupt affinity information among multiple cores. The original intention is to notify the cascaded redirect_set_affinity that multi-core synchronization is not required. However, this introduces some compatibility issues, such as the new return value causing msi_domain_set_affinity to no longer perform irq_chip_write_m= si_msg. 1) When redirect exist in the system, the msi msg_address and msg_data no longer changes after the allocation phase, so it does not actually require = updating the MSI message info. 2) When only avecintc exists in the system, the irq_domain_activate_irq interface will be responsible for the initial configuration of the MSI mess= age, which is unconditional. After that, if unnecessary, no modification to the = MSI message is alse correctly. Signed-off-by: Tianyang Zhang --- drivers/irqchip/irq-loongarch-avec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-loongarch-avec.c b/drivers/irqchip/irq-loo= ngarch-avec.c index 70aa34439370..7bdf3f678db4 100644 --- a/drivers/irqchip/irq-loongarch-avec.c +++ b/drivers/irqchip/irq-loongarch-avec.c @@ -99,7 +99,7 @@ static int avecintc_set_affinity(struct irq_data *data, c= onst struct cpumask *de return -EBUSY; =20 if (cpu_online(adata->cpu) && cpumask_test_cpu(adata->cpu, dest)) - return 0; + return IRQ_SET_MASK_OK_DONE; =20 cpumask_and(&intersect_mask, dest, cpu_online_mask); =20 --=20 2.41.0