From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10547C54EE9 for ; Thu, 8 Sep 2022 18:35:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Q8rhwOLtEf15qiuPF7vxvljahzo2UNTFagwX0GAj4hY=; b=XRGa/1H6nSWZjA j1f0ExDtkPZkOuB97PYcJSngNsTh+t+H9DGngqCub5xThySgAYcSojNn42JN4KoC5miU5zcqlWeCv uQQgBf6lRB8zXvCV22LMSy2rXMSlLv8TKWeDyYvS6BFvkWhy7rp/n+RYvzaTASVbUjpUxfnTIzvI3 N99M7AEH8lxpcm6/I2Obk/fGuzpX6bOjg2NUquJgFebFW82cO6IXGvD6icvn0v0INSY9MpmHBhA76 qHpyn/uunNAYtVY0uCwHDJAfjpQJaiDd/yHyPXVi+ArBikDDxPTTn+Siw0G1uq2fVCEFVD2DBDaER 9YnejpOHJkqwtOS9R5QA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oWMMX-006nZv-MF; Thu, 08 Sep 2022 18:34:53 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oWMMU-006nY0-KG for linux-arm-kernel@lists.infradead.org; Thu, 08 Sep 2022 18:34:52 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id EEE04CE1F11; Thu, 8 Sep 2022 18:34:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F108EC433D6; Thu, 8 Sep 2022 18:34:44 +0000 (UTC) From: Catalin Marinas To: Qi Zheng , will@kernel.org, mark.rutland@arm.com, arnd@arndb.de Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] arm64: run softirqs on the per-CPU IRQ stack Date: Thu, 8 Sep 2022 19:34:32 +0100 Message-Id: <166266206917.232050.13406365654648397230.b4-ty@arm.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220815124739.15948-1-zhengqi.arch@bytedance.com> References: <20220815124739.15948-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220908_113450_855624_F56CB3A5 X-CRM114-Status: GOOD ( 10.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 15 Aug 2022 20:47:39 +0800, Qi Zheng wrote: > Currently arm64 supports per-CPU IRQ stack, but softirqs > are still handled in the task context. > > Since any call to local_bh_enable() at any level in the task's > call stack may trigger a softirq processing run, which could > potentially cause a task stack overflow if the combined stack > footprints exceed the stack's size, let's run these softirqs > on the IRQ stack as well. > > [...] Applied to arm64 (for-next/misc), thanks! [1/1] arm64: run softirqs on the per-CPU IRQ stack https://git.kernel.org/arm64/c/2d2f3bb897a3 -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel