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 282A1C433F5 for ; Mon, 31 Jan 2022 17:13:50 +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=Udzlmn5tj/jtNKTFPlwVKFscebzVI+rewCoeMBS3sW0=; b=1CKIz4wdMjmpCq hWYsrcYJT77PWDFexZBoMKIq7I+VfgAaeRylnppz4ru6CABdrIbTIEkmTfkmi7eavd5NCJ5P2g5RT iBtBW3dJpDhKsHNUMfJ1ibrERMIIb9odXs6BU5pKYJGzfBzuptvg4wz/9vJz89ylDvTg4d+3J+7Mm zWzPTj/B1fkbuleq0niDTN1XJonzmW+OoZrPZDIFvQSV+kqpoOvhU8mcMXKHpmQZSpQLXehmfxiBH tabUW0r2FdlKMctZsRqMdQ+CkkXobYW6xxuYQfn5Sd17mrvp+jQ6P0DvyGWO4XYDW5At9vSINDIr4 e6WUG+RXtUieWBI28zuA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nEaDT-00A1UY-QU; Mon, 31 Jan 2022 17:11:49 +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 1nEa5t-009zD1-0y for linux-arm-kernel@lists.infradead.org; Mon, 31 Jan 2022 17:03:58 +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 9A222B82BB2; Mon, 31 Jan 2022 17:03:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E4A1C340E8; Mon, 31 Jan 2022 17:03:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643648634; bh=kSfA8c1HbKGYRgU8WBBFMZo736MaMzN4CIGZ9draSqs=; h=From:To:Cc:Subject:Date:From; b=VSB+CKsdkvLDgCQ8/pfNze8zn5myWDYOwyLrq675xEAqOdLTJpzUem5SILgYdsv3h copsBYcWkBVC5n7p47P40nSh/mKdIS6Azq3lk5ObMgtWYsxwfHAIkEeEiKpKISGDHf EPTHhBSWcEIZ0ee+SuEeBslnU6o7UAiyEzG/Fkkjlm6Ou6IzlB8RN/En7f26yDwfXz AFmKTWHuUXeU2IJOpaMJXLwPCArx+t83er/6FlFnjreJryQvem4m5K7vXFjq4e+iyB clYx27ktcfng2qhm64d48Gs5ikKK7MBZT+k+BWK+LbRm75L0RFfHAfKGIl/GJATpBF KOwnXVGM43IUQ== 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 v2 00/12] ARM: ftrace fixes and cleanups Date: Mon, 31 Jan 2022 18:03:35 +0100 Message-Id: <20220131170347.381551-1-ardb@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2323; h=from:subject; bh=kSfA8c1HbKGYRgU8WBBFMZo736MaMzN4CIGZ9draSqs=; b=owEB7QES/pANAwAKAcNPIjmS2Y8kAcsmYgBh+BZbzdt4Sp1v5gL/n+OgRfMq50FL0vpMudnUHYw6 kuBBMBKJAbMEAAEKAB0WIQT72WJ8QGnJQhU3VynDTyI5ktmPJAUCYfgWWwAKCRDDTyI5ktmPJCqvC/ 9pgWww4cc9Yn/PM1DIhE/9KsqfFUburFxzqoKnqyYq6R44D8fI99TdsJivY0q8bQmMFcxoQLQnlhbn ZFaerBSipvuaZU9utD8BEhhipg6aOgc+/y0Ps+GGDV+opy3daS42X0haVT70pIj8DcLxDxUF04eni0 zzk++TmT4oK9kBC/0YmbxRpGGRgMToq+WsiP64EnYerMpILLpMj0IlwxNcjshBMnwi0TA7bRSYlubO BDiuueeiOBnCIj1oy86kV0xONVVIKjpK6yPBelE26S7BuFbxHKtjNzzWiJKuHAX2jx6By2GXbRYqOW 8GYhN6mP/UUW0mnaJDm8qQBKJgFhaO+6eFVXZN7LQQ2sR4iPigDgC0V/9pNi/r3GJC0/1MDSbcdaVp geAqzzuCadnEEAcVZr5sAKiqM2/0hupMUV0aUA/AnS04KXo+zjpozoEa3dnJXXJTL13oOcohUOzqub AcGaINi9pIAh7oPk/jDbkYy7lyALuj0CRDBsgm3p/doZI= 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-20220131_090357_401641_6A61CB8D X-CRM114-Status: GOOD ( 14.88 ) 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 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 (12): ARM: ftrace: ensure that ADR take 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 in Thumb2 mode 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 | 7 +- arch/arm/include/asm/ftrace.h | 20 +-- arch/arm/include/asm/opcodes.h | 14 +++ arch/arm/include/asm/stacktrace.h | 3 + arch/arm/kernel/Makefile | 6 +- arch/arm/kernel/entry-ftrace.S | 128 +++++++++++--------- arch/arm/kernel/ftrace.c | 51 ++++++-- arch/arm/kernel/unwind.c | 7 +- arch/arm/mach-exynos/mcpm-exynos.c | 7 +- arch/arm/probes/kprobes/actions-common.c | 6 +- arch/arm/probes/kprobes/actions-thumb.c | 38 ++++-- drivers/firmware/arm_scmi/Makefile | 7 ++ 14 files changed, 193 insertions(+), 107 deletions(-) -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel