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 67B39C433EF for ; Thu, 3 Feb 2022 08:23:44 +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: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=hrSNVxli++QlPgZo1JKfFazgOu0GiSXP/ZpU9tdmXX8=; b=3D8wglaX1fwk6m 7mPpcX2jieZierVhVJUGEXRsWsO3EVrZsxCBhUTfYij8CQjqJcNpDIuTDkGhytogJwQ6qzIambSZ4 naGDn14XQwUpZwkTYpGXEbNcrk7K9v9146sFXmUR4D0QseEiu0eNJ7omvXOoY19mdTCc586DNpPtq zOJ8viZk/CLRIhOVYRvmqOVNA3fpReTmaJug78QIgDCszm4m/C5hIkt3iggDAfSlNuBfhNDgUJOYC 1XydKM4f1lQx7gXJhv4LJk/QnfjH45O33TbCzF7qxa2I02JKv96kP/OuVUr8LqcwvoI/7axUUI1Vr t/Olu5BWYaVj82x7UlLw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nFXNk-000JG9-O1; Thu, 03 Feb 2022 08:22:20 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nFXNg-000JEh-Ty for linux-arm-kernel@lists.infradead.org; Thu, 03 Feb 2022 08:22:18 +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 ams.source.kernel.org (Postfix) with ESMTPS id EA9F1B83353; Thu, 3 Feb 2022 08:22:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5BAF7C340E4; Thu, 3 Feb 2022 08:22:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643876533; bh=UPqutvKW4SHlloDaB3oPfDJcFWDyoK2qzsr9XvDuSDk=; h=From:To:Cc:Subject:Date:From; b=LwrcwuCbWLeDUkHwhQgpEBuYR3+Cvh1hsjqb+Gzmci9G7XQzLeJr60kMTBRR0lFtQ sdYaRxcV+geBdGO1/0jIYnMEyrVTYIBUPL1zCFWvhU1Yc54hrF1OTjl3eo+9aehuMO 6zzxkT6GuOECgAIW60bNqLJ3CsQeir64SdV6kkEjiPpYiL3qW1+JqBHvXJAiXwOi4t 2EXL+G8DJ7ofA9HcDCGbDJSDu2vHgc8xgIpb5PmcD00vTsmkti6DtHRs/woMw47fEG RXMsDm/rxLUwG8Xj7n996xX3+7aVCiJAXWTWdiY7+uQHPJsGdbc1oRoI4mZ6JfLhSF yEzmCqGmaONag== From: Ard Biesheuvel To: linux@armlinux.org.uk Cc: linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Steven Rostedt , Sudeep Holla , Cristian Marussi , Nathan Chancellor , Nick Desaulniers , Arnd Bergmann , Linus Walleij , Masami Hiramatsu Subject: [PATCH v3 00/13] ARM: ftrace fixes and cleanups Date: Thu, 3 Feb 2022 09:21:51 +0100 Message-Id: <20220203082204.1176734-1-ardb@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2702; h=from:subject; bh=UPqutvKW4SHlloDaB3oPfDJcFWDyoK2qzsr9XvDuSDk=; b=owEB7QES/pANAwAKAcNPIjmS2Y8kAcsmYgBh+5CSoWIjGFXkGhjoiv+pYULSVlnQGWR+aCPTB007 SwE/cwaJAbMEAAEKAB0WIQT72WJ8QGnJQhU3VynDTyI5ktmPJAUCYfuQkgAKCRDDTyI5ktmPJB4WC/ 9XnSyHNRl0tMmUMhnPi1z3omiTQ+d646da/W/r1BlRUKlZ8tN6ZgvfDzSx7cbGQjMkIuO8w4+UBtKd QLUXHX+WN6qfGN5UQpbj7M++7M2hD8z8KKFYniOXAGkt0thtokWteCUg1sQ0vw5Hm4Ezn2rDSirvFs 5s5GanWpGm45SLiz2a6Pw1beOJxiBj3YuQEVQNtSIRj3fczFCtV8+jQ+qtUVYKEdCQROU5zIB84oUv SrU1kW7zycARFfT8U0ZwlGL0vPtntsZHTMcVWCj2nivNmdgrw5a71KBskt55JA+D8JpmSiOHFJ9JOi +OxEjmiCA/bN339CLtQB6kUDnZV8XkpvB9eBfF6X1zm1yBeSWsiHOuFyBL/vppbmo9zgx6y3YSWSnd zKb42/uvPrF7ypJjoYjVx3c7k6Jygt2cUlHKCKW6atsVNXuCGvuaD+Cen6/2UE0/sjLirz7zZvKWEk dZmdcZsMdBxGDySiQ0wcacdP5cDtVC3bz/IvSAHtuPx2Q= X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220203_002217_290759_16A13F6F X-CRM114-Status: GOOD ( 17.58 ) 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 This series addresses a number of issues in the ARM support code for ftrace, mostly related to Thumb2 but affecting other configurations as well. Changes since v2: - simplify kprobes patch and avoid global FPREG_ macros - update cacheflush code to avoid R7 and R11 entirely, instead of preserving/restoring them - add new patch to disable ftrace in Broadcom Kona SMC code - add acks from various folks (thanks!) Changes since v1: - add a couple of patches to enable ftrace in Thumb2 mode when building with Clang, which was the one remaining unsupported configuration - fix up some minor code issues caught by the bots - add some acks Cc: Steven Rostedt Cc: Sudeep Holla Cc: Cristian Marussi Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Arnd Bergmann Cc: Linus Walleij Cc: Masami Hiramatsu Ard Biesheuvel (13): ARM: ftrace: ensure that ADR takes the Thumb bit into account ARM: ftrace: use ADD not POP to counter PUSH at entry ARM: ftrace: use trampolines to keep .init.text in branching range ARM: ftrace: avoid redundant loads or clobbering IP ARM: ftrace: avoid unnecessary literal loads ARM: ftrace: enable HAVE_FUNCTION_GRAPH_FP_TEST ARM: unwind: track location of LR value in stack frame ARM: ftrace: enable the graph tracer with the EABI unwinder ARM: kprobes: treat R7 as the frame pointer register in Thumb2 builds drivers/firmware/scmi: disable ftrace for Clang Thumb2 builds ARM: cacheflush: avoid clobbering the frame pointer ARM: mach-bcm: disable ftrace in SMC invocation routines Revert "ARM: 9144/1: forbid ftrace with clang and thumb2_kernel" arch/arm/Kconfig | 4 +- arch/arm/Kconfig.debug | 2 +- arch/arm/include/asm/cacheflush.h | 12 +- arch/arm/include/asm/ftrace.h | 20 +-- arch/arm/include/asm/stacktrace.h | 3 + arch/arm/kernel/Makefile | 6 +- arch/arm/kernel/entry-ftrace.S | 128 +++++++++++--------- arch/arm/kernel/ftrace.c | 62 ++++++++-- arch/arm/kernel/unwind.c | 7 +- arch/arm/mach-bcm/Makefile | 1 + arch/arm/mach-exynos/mcpm-exynos.c | 6 +- arch/arm/mm/cache-v7.S | 40 +++--- arch/arm/probes/kprobes/actions-common.c | 8 +- arch/arm/probes/kprobes/actions-thumb.c | 16 ++- drivers/firmware/arm_scmi/Makefile | 7 ++ 15 files changed, 189 insertions(+), 133 deletions(-) -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel