From nobody Sun Dec 14 05:55:15 2025 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9996535977; Sat, 13 Dec 2025 09:50:21 +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=1765619427; cv=none; b=fEP28/R3/OicJsEjyaI03lg7YniblEh8VcMrhUqX7uIYGRakD3nfegg/ioEg+fckz/YwuQOaMVVDPCxHmuEHMvy+G+mgHgQbPayD96sXXzr3ZOjvdAorTJYZWWuLKtdYY8jPHWHLHRP+pRUClNZUv0LLgz3T/8iNflEJNVcJ50s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765619427; c=relaxed/simple; bh=2ENg29drYfVDRv/MVZsEXdNOKm+KWtiWqP5gZulnKss=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=C46m4ep3PgiE5b+P1No/hX18GYa0Po8ACqnQmSa43ILL/dBmSNCGABOxiq0YC5qi2jccvoAe70aLDCCf4rvnHFAPtKxMEeKdo5G2Z4q4meYorD9dJPJz7ozavaoClJFqRg4YlHvLAkRK0FUSPv1o2qhwcWUKf+kjl7PxQkQ4kBk= 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 [223.64.68.219]) by gateway (Coremail) with SMTP id _____8BxF9HTNj1p69ctAA--.33512S3; Sat, 13 Dec 2025 17:50:11 +0800 (CST) Received: from localhost.localdomain (unknown [223.64.68.219]) by front1 (Coremail) with SMTP id qMiowJDxscLLNj1pRe5IAQ--.10721S2; Sat, 13 Dec 2025 17:50:10 +0800 (CST) From: Huacai Chen To: Greg Kroah-Hartman , Sasha Levin , Huacai Chen Cc: Xuerui Wang , stable@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, Huacai Chen , Tianyang Zhang Subject: [PATCH 6.12] LoongArch: Add machine_kexec_mask_interrupts() implementation Date: Sat, 13 Dec 2025 17:49:50 +0800 Message-ID: <20251213094950.1068951-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.47.3 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: qMiowJDxscLLNj1pRe5IAQ--.10721S2 X-CM-SenderInfo: hfkh0x5xdftxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj93XoWxJr48AF15XrykZr43Aw4xGrX_yoW8Xr13pF WUCF1UGr45Ww4SvFn3J3s3WF15Ja4kG3yIqayfCFyfWr1DKwn0gas7JrnFqFyjkr4Yqryf ZrsYq34IgF15A3XCm3ZEXasCq-sJn29KB7ZKAUJUUUU5529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUkjb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Jr0_JF4l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Jr0_Gr1l84ACjcxK6I8E87Iv67AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr0_Gr1UM2AIxVAIcxkEcVAq07x20xvEncxIr21l57IF6xkI12xvs2x26I8E6xACxx1l5I 8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1Y6r17McIj6I8E87Iv67AK xVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41l42xK82IYc2Ij64 vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8G jcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2I x0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK 8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I 0E14v26r1j6r4UYxBIdaVFxhVjvjDU0xZFpf9x07j1WlkUUUUU= Content-Type: text/plain; charset="utf-8" Commit 863a320dc6fd7c855f47da4b ("LoongArch: Mask all interrupts during kexec/kdump") is backported to LTS branches, but they lack a generic machine_kexec_mask_interrupts() implementation, so add an arch-specific one. Signed-off-by: Tianyang Zhang Signed-off-by: Huacai Chen --- 6.6LTS also need it if commit 863a320dc6fd7c855f47da4b is backported. arch/loongarch/kernel/machine_kexec.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/loongarch/kernel/machine_kexec.c b/arch/loongarch/kernel/= machine_kexec.c index 8ef4e4595d61..19bd763263d3 100644 --- a/arch/loongarch/kernel/machine_kexec.c +++ b/arch/loongarch/kernel/machine_kexec.c @@ -136,6 +136,28 @@ void kexec_reboot(void) BUG(); } =20 +static void machine_kexec_mask_interrupts(void) +{ + unsigned int i; + struct irq_desc *desc; + + for_each_irq_desc(i, desc) { + struct irq_chip *chip; + + chip =3D irq_desc_get_chip(desc); + if (!chip) + continue; + + if (chip->irq_eoi && irqd_irq_inprogress(&desc->irq_data)) + chip->irq_eoi(&desc->irq_data); + + if (chip->irq_mask) + chip->irq_mask(&desc->irq_data); + + if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data)) + chip->irq_disable(&desc->irq_data); + } +} =20 #ifdef CONFIG_SMP static void kexec_shutdown_secondary(void *regs) --=20 2.47.3