From patchwork Sat Nov 30 20:11:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eliav Farber X-Patchwork-Id: 13889299 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 B19F4D7360A for ; Sat, 30 Nov 2024 20:14:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version: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:In-Reply-To:References:List-Owner; bh=t+WQb6BJgufEUtZmDEGv1ME0aTsf7gIJocZMkFV+cR4=; b=q05a4rNNWaB7JQkQu41G3SMd5R NJh20XZ9ALf/C5k1IODE8e8kV4ejuI70vwnmRQILLSaXLki1kCfj8jhkwEx200RZ5yd1TqSr6P0R1 4oXTiwjGLuHUrQWgBDs5Fh9HFmY4y9/src9DYRq4Hok490ejYTezoWnGjmX5dI2USCZQ7ooKMZAR7 lRyBvziI7MOZcNlUGV71qTqYOk2rkTitNhwHsipdGOvc+WNWzJn8TRLhGr5pRK5p47xk2EZgXcynb Dk9VH/gPxKxjkpuvhHQh9dGZNP+qzrLsaszvg7DssixCCbvYFIPHCAwq0QFLy9BChJzJoebywpc1D nkSjeDFg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tHTqg-00000002WGO-29Yo; Sat, 30 Nov 2024 20:13:50 +0000 Received: from smtp-fw-6002.amazon.com ([52.95.49.90]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tHTom-00000002Vub-18jj; Sat, 30 Nov 2024 20:11:53 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1732997512; x=1764533512; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=t+WQb6BJgufEUtZmDEGv1ME0aTsf7gIJocZMkFV+cR4=; b=JRBWAObQobcX5d0hw917+hai3xmRBGOwkTAuOLTjxa3tZ3cvlIjDsXpo ct9jBBmZ3KbzCV0jaD8pzFwU9/q+oQa/TcWV4pmwQH9tUVuFvRKGwQmNP kfax21D5eevRsM/Ge22V7AHnQIXVjrtRqMOjhh0cagKxaEZk3zOouui4f 8=; X-IronPort-AV: E=Sophos;i="6.12,199,1728950400"; d="scan'208";a="452383875" Received: from iad6-co-svc-p1-lb1-vlan3.amazon.com (HELO smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev) ([10.124.125.6]) by smtp-border-fw-6002.iad6.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Nov 2024 20:11:46 +0000 Received: from EX19MTAUWA002.ant.amazon.com [10.0.21.151:11108] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.31.190:2525] with esmtp (Farcaster) id 49529e1b-bc79-4e0e-b4f2-a5e69d56acc6; Sat, 30 Nov 2024 20:11:45 +0000 (UTC) X-Farcaster-Flow-ID: 49529e1b-bc79-4e0e-b4f2-a5e69d56acc6 Received: from EX19D013UWB001.ant.amazon.com (10.13.138.52) by EX19MTAUWA002.ant.amazon.com (10.250.64.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1258.34; Sat, 30 Nov 2024 20:11:44 +0000 Received: from EX19MTAUWA001.ant.amazon.com (10.250.64.204) by EX19D013UWB001.ant.amazon.com (10.13.138.52) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1258.34; Sat, 30 Nov 2024 20:11:44 +0000 Received: from email-imr-corp-prod-pdx-all-2b-22fa938e.us-west-2.amazon.com (10.25.36.214) by mail-relay.amazon.com (10.250.64.204) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1258.34 via Frontend Transport; Sat, 30 Nov 2024 20:11:44 +0000 Received: from dev-dsk-farbere-1a-46ecabed.eu-west-1.amazon.com (dev-dsk-farbere-1a-46ecabed.eu-west-1.amazon.com [172.19.116.181]) by email-imr-corp-prod-pdx-all-2b-22fa938e.us-west-2.amazon.com (Postfix) with ESMTP id 0512FC05E4; Sat, 30 Nov 2024 20:11:44 +0000 (UTC) Received: by dev-dsk-farbere-1a-46ecabed.eu-west-1.amazon.com (Postfix, from userid 14301484) id 8F5347001; Sat, 30 Nov 2024 20:11:43 +0000 (UTC) From: Eliav Farber To: , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH v5 0/2] Improve interrupt handling during machine kexec Date: Sat, 30 Nov 2024 20:11:41 +0000 Message-ID: <20241130201143.48808-1-farbere@amazon.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241130_121152_475976_FF586F2B X-CRM114-Status: GOOD ( 12.14 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch series focuses on improving the machine_kexec_mask_interrupts() function by consolidating its implementation and optimizing its behavior to avoid redundant interrupt masking. Patch Summary: [PATCH v5 1/2] Move machine_kexec_mask_interrupts() to kernel/irq/kexec.c, removing duplicate architecture-specific implementations. [PATCH v5 2/2] Refine machine_kexec_mask_interrupts() to avoid re-masking already-masked interrupts, resolving specific warnings triggered in GPIO IRQ flows. Changes between v4 and v5: - The function machine_kexec_mask_interrupts() has been moved from kernel/kexec_core.c to a new file kernel/irq/kexec.c. - A new configuration option, GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD, has been added. - The parameters for the machine_kexec_mask_interrupts() function have been defined in reverse Christmas Tree style. - The comment explaining the call to irq_set_irqchip_state() has been improved for clarity. - The phrase 'This patch' has been removed from the commit message. Changes between v3 and v4: - Add missing and includes. Eliav Farber (2): kexec: Consolidate machine_kexec_mask_interrupts() implementation kexec: Prevent redundant IRQ masking by checking state before shutdown arch/arm/kernel/machine_kexec.c | 23 -------------------- arch/arm64/Kconfig | 1 + arch/arm64/kernel/machine_kexec.c | 31 -------------------------- arch/powerpc/include/asm/kexec.h | 1 - arch/powerpc/kexec/core.c | 22 ------------------- arch/powerpc/kexec/core_32.c | 1 + arch/riscv/kernel/machine_kexec.c | 23 -------------------- include/linux/irq.h | 3 +++ kernel/irq/Kconfig | 9 ++++++++ kernel/irq/Makefile | 2 +- kernel/irq/kexec.c | 36 +++++++++++++++++++++++++++++++ 11 files changed, 51 insertions(+), 101 deletions(-) create mode 100644 kernel/irq/kexec.c