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 9AEFBC2D0CD for ; Mon, 19 May 2025 12:59:59 +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:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cE2+2rQly9HgL9bYXdkzjN1lsTGNQTRZg64/vSnA9+c=; b=D6INEhK6MWeo+o7IIzdCU78D72 4Ac0omhxJLVkxfg2vKE4OslLw1ZszbB+KzSU3pwgKBY/Bc9ka4ILRZkc86rITSe8AaKPSzgQL6jM8 X5Mz4uzvErTPrQg6gLCE4SrCa/MmUv9cIw/y4rQ9d94f+tFO+LnIdfA6UQsk5rvXnVdZMkp8H9tcq BtUTDT6Ciletk8r9xNPFcTh9uP4NMpOpeZo9X/Iq2ZUoTaXS0XSbW1VeJzwnCV64DPRxpEVzeB6hp MyjlPZMi2e6iJDF5T/EwXS8VHb1IAoG/dEj324/0lROoxG19x80wyTKDRPMy/Q6Cg6gbkyQia/JiM T+TaC7lg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uH05t-00000009ENS-2ntR; Mon, 19 May 2025 12:59:49 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uH03j-00000009E2t-09GO for linux-arm-kernel@lists.infradead.org; Mon, 19 May 2025 12:57:36 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 309091655; Mon, 19 May 2025 05:57:19 -0700 (PDT) Received: from J2N7QTR9R3 (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 64BCE3F6A8; Mon, 19 May 2025 05:57:29 -0700 (PDT) Date: Mon, 19 May 2025 13:57:23 +0100 From: Mark Rutland To: Song Liu Cc: Petr Mladek , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-toolchains@vger.kernel.org, live-patching@vger.kernel.org, indu.bhagat@oracle.com, puranjay@kernel.org, wnliu@google.com, irogers@google.com, joe.lawrence@redhat.com, jpoimboe@kernel.org, peterz@infradead.org, roman.gushchin@linux.dev, rostedt@goodmis.org, will@kernel.org, kernel-team@meta.com Subject: Re: [PATCH v3 0/2] arm64: livepatch: Enable livepatch without sframe Message-ID: References: <20250320171559.3423224-1-song@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250519_055735_116705_1C34ACF6 X-CRM114-Status: GOOD ( 14.82 ) 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 On Fri, May 16, 2025 at 09:53:36AM -0700, Song Liu wrote: > On Thu, Apr 10, 2025 at 8:17 AM Petr Mladek wrote: > > > [...] > > > > > > [1] https://lore.kernel.org/live-patching/20250127213310.2496133-1-wnliu@google.com/ > > > [2] https://lore.kernel.org/live-patching/20250129232936.1795412-1-song@kernel.org/ > > > [3] https://sourceware.org/bugzilla/show_bug.cgi?id=32589 > > > [4] https://lore.kernel.org/linux-arm-kernel/20241017092538.1859841-1-mark.rutland@arm.com/ > > > > > > Changes v2 => v3: > > > 1. Remove a redundant check for -ENOENT. (Josh Poimboeuf) > > > 2. Add Tested-by and Acked-by on v1. (I forgot to add them in v2.) > > > > The approach and both patches look reasonable: > > > > Reviewed-by: Petr Mladek > > > > Is anyone, Arm people, Mark, against pushing this into linux-next, > > please? > > Ping. > > ARM folks, please share your thoughts on this work. To fully support > livepatching of kernel modules, we also need [1]. We hope we can > land this in the 6.16 kernel. Hi; apologies for the delay -- my time had been consumed by FPSIMD/SVE/SME fixes and related non-upstream stuff for the last few weeks, and now I'm catching up. For the stacktrace side, I'm happy with enabling this without sframe, and I hase some minor nits which we can either fix up now or as a follow-up. I'll cover those in another reply, and chase up the module / code-patching bit shortly. Mark. > Thanks, > Song > > [1] https://lore.kernel.org/linux-arm-kernel/20250412010940.1686376-1-dylanbhatch@google.com/