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 A8941C5CFC1 for ; Fri, 14 Aug 2026 20:18:45 +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:Message-ID: In-Reply-To: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=lZ82sqPSmYRmERMqPL40Xfh4og2FSHTEU3EqyatDjic=; b=fBg6OjnSPjIdTp V0qqUyInHsFtsbJzvb2Hy96n6AlILfevOW5XTA+C6eGtzmOhp9G2lCSJ+aHyCXioD9AO/bQQwsv0f 5Zfg5kp3BeFVk3f6j3cZ6Z3sXDwb4f/m7JPSoT+wgawzGAgNdbEmyF7xCF5YWXj0CcRsR+CsNZIjs nc0tfPiXlrdvOuC8SjGo1NyqlKAyt6s6NNSlhq996pRfaLAbtVzv9ks6N+Cg0juzfXiPcmHEEwKv1 2ZX0NAwjQUCqoBl/1O8+MMmfh03zJ1eXbOYfiL2G7iNldN1EX0WJMGj0VWCyFiElHXLVH1yNhN3gl +wFt6EnF2X6B5gv+f0cw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wuyLy-000000038by-2FTL; Fri, 14 Aug 2026 20:18:11 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wuyLw-000000038bK-0meZ for linux-riscv@lists.infradead.org; Fri, 14 Aug 2026 20:18:08 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id D05144335E; Fri, 14 Aug 2026 20:18:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 251B91F00A3D; Fri, 14 Aug 2026 20:18:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786738687; bh=pveHsKdz8gG8JBaNaiMBJjqdWpme2EapoXdhRL06JAo=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=CPNwwRaU4usMAhjJGFQi1xSqpKOi00H22jbPhK8odmefHDMZtFXVPIWIg9b0WGund 1LA0M5D3tN7bg9nEV6iFmQwKeDt0CfcBV1dbhuunIKiCps0S63BLH3FjT8OoVsloiQ FvVyXK3Pzhql/7dlBpoqXn8zrE84KBzNPP8UIEw5XH5iYcqM9fEuyzo6t3SW0qPJnR ooS9lSh/9uEUkn51ivmCwy1v3BKgrzGZm0+DeO18pNKQ7GK1n+AyGxwMDk30Z/61jN YRrBmR45mBVm9P3cpBZ4vgP3mbAtl81INMe3hPH3PceanrjSLSoFgYWDhNKxEzV/+F vJ5xN/uu4Vu2A== Date: Fri, 14 Aug 2026 14:18:04 -0600 (MDT) From: Paul Walmsley To: Xiaofeng Yuan cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Nam Cao , Klara Modin , prabhakar.csengg@gmail.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 0/2] riscv: fix text patching on minimal kernel configs In-Reply-To: <20260814082742.148403-1-xiaofengmian@163.com> Message-ID: References: <20260814082742.148403-1-xiaofengmian@163.com> MIME-Version: 1.0 X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, 14 Aug 2026, Xiaofeng Yuan wrote: > This series fixes two related issues that break kprobes and kernel text > patching on RISC-V configurations where CONFIG_STRICT_MODULE_RWX is not > available (e.g. CONFIG_MODULES=n). > > Patch 1 makes the EXECMEM_KPROBES range writable when > CONFIG_STRICT_MODULE_RWX is disabled, so kprobe instruction slot writes > do not fault on read-only executable pages. > > Patch 2 makes patch_map() skip the temporary fixmap mapping when the > kernel text is already writable, i.e. when CONFIG_STRICT_KERNEL_RWX is > disabled. The module text path is still gated on CONFIG_STRICT_MODULE_RWX. Thanks, queued for v7.3-rc. - Paul _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0029B3D3310 for ; Fri, 14 Aug 2026 20:18:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786738689; cv=none; b=PpQNyZ81QHLvwBFeg2FcrA0LwiGoqAEj4fd7KhUw6BhgeIKHKzRN8gJrh9UVjGkbIG3PgAjEntzW/ybKHxBcliIKPVZw1E6xKHMUqsRM1pSSwK4e5xikgrknZVAbJYcXAGLlMv684TmH3/xOU5WfkkTbunq4dFgrqwr7xAss0vI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786738689; c=relaxed/simple; bh=nmCvEhNkTMIo9VfCh1gyGEFflQLNYUsppzy3JvmsFe8=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References: MIME-Version:Content-Type; b=TPF6qzy8qSGRp0JxOmu3cT4kf3j6N/9WfS6/1IuCNuY0axyO2cCbNIU2qQfeyqi7mr2xMeC2WVrMX5G2UVQ7LhKG53c0eMLnSbtVR8xiSLTYW5eu66J46FoVrAn7qFAevi9Txj2B1Rttd3sxVqY13Ua8bjaob5+2RpA55EgMoss= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CPNwwRaU; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CPNwwRaU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 251B91F00A3D; Fri, 14 Aug 2026 20:18:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786738687; bh=pveHsKdz8gG8JBaNaiMBJjqdWpme2EapoXdhRL06JAo=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=CPNwwRaU4usMAhjJGFQi1xSqpKOi00H22jbPhK8odmefHDMZtFXVPIWIg9b0WGund 1LA0M5D3tN7bg9nEV6iFmQwKeDt0CfcBV1dbhuunIKiCps0S63BLH3FjT8OoVsloiQ FvVyXK3Pzhql/7dlBpoqXn8zrE84KBzNPP8UIEw5XH5iYcqM9fEuyzo6t3SW0qPJnR ooS9lSh/9uEUkn51ivmCwy1v3BKgrzGZm0+DeO18pNKQ7GK1n+AyGxwMDk30Z/61jN YRrBmR45mBVm9P3cpBZ4vgP3mbAtl81INMe3hPH3PceanrjSLSoFgYWDhNKxEzV/+F vJ5xN/uu4Vu2A== Date: Fri, 14 Aug 2026 14:18:04 -0600 (MDT) From: Paul Walmsley To: Xiaofeng Yuan cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Nam Cao , Klara Modin , prabhakar.csengg@gmail.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 0/2] riscv: fix text patching on minimal kernel configs In-Reply-To: <20260814082742.148403-1-xiaofengmian@163.com> Message-ID: References: <20260814082742.148403-1-xiaofengmian@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII On Fri, 14 Aug 2026, Xiaofeng Yuan wrote: > This series fixes two related issues that break kprobes and kernel text > patching on RISC-V configurations where CONFIG_STRICT_MODULE_RWX is not > available (e.g. CONFIG_MODULES=n). > > Patch 1 makes the EXECMEM_KPROBES range writable when > CONFIG_STRICT_MODULE_RWX is disabled, so kprobe instruction slot writes > do not fault on read-only executable pages. > > Patch 2 makes patch_map() skip the temporary fixmap mapping when the > kernel text is already writable, i.e. when CONFIG_STRICT_KERNEL_RWX is > disabled. The module text path is still gated on CONFIG_STRICT_MODULE_RWX. Thanks, queued for v7.3-rc. - Paul