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 482EAC61DA4 for ; Mon, 6 Mar 2023 11:09:29 +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:In-Reply-To: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=a7d3CzNYcaVa4EbW6BjEXaVhgHAnTCdEEOewjlSqSkM=; b=FpQJFtVwT1sbSO QChA2cej4BpP8GtisI368Gp9vamSZ3AtVCqLcNMJrpnnsdUDF4Zcfa3s7eECSiYPWVScYmBGSOntt SXugr4SPoriNhZ4OrjujRi+c9n48vf7CJZsuaKGc732Hv9BWd0y+t9ZmBHOLu33JNJYWK1z3Ds+CP IuqIIjQaee41BmdvtD9NRRNzGYzQOUJ3ZOtNtmMlKtl8U/9Lmv9C3w97OsGDLOsGsKnbhQYCMNM5W fdbzyN+BfpZxmvDWZDtQe5RlU+6otxSnHyOcFi5MyJqsjmUEn/ms1JNWhIeZmuZTvYHq1v47GlkmO fxjwBNQWKM3P2s7I2QEA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZ8he-00CPdp-7m; Mon, 06 Mar 2023 11:08:26 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZ8hY-00CPON-Dk for linux-arm-kernel@lists.infradead.org; Mon, 06 Mar 2023 11:08:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=6+2f3w3qpSci3gVKHyFWRQcLrRTY51VgoSMXT3tTuOI=; b=TtS5a+0/C37z+jl+vgVW7Gy/S8 jwVoyB8rRNThETM1HU0RWHyCTEVAv/US9tT+8tJhjh6lLnPEE8ciV/l0qOPknSSAf0iL99oCBbGgI 4iLpwdKhfejWuePBUiVUli+NQIOJGc0Bvkek8kWOOuyFlPU0H4M5W9ITxA4llp/JPWS71keFtuFea z7KdgIIpIU5iiFXSHtXqIGpAv5esj54iH9RvZuxMt46D+kvy1NhnaS7fzVo/5tXhXRuwh5nUyX7BT pOhGJfz1Mhsj8bcfMhp+wXcW74S21zC6t/VG1i4SJn1od0V1bMK6utnC/AHwI62cprRkh73yVQMVC wHnp4wzQ==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:56512) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pZ8fR-0005YT-6N; Mon, 06 Mar 2023 11:06:09 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1pZ8fN-0000Pp-Nx; Mon, 06 Mar 2023 11:06:05 +0000 Date: Mon, 6 Mar 2023 11:06:05 +0000 From: "Russell King (Oracle)" To: Jungseung Lee Cc: linus.walleij@linaro.org, amit.kachhap@arm.com, ardb@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, keescook@chromium.org, js07.lee@gmail.com Subject: Re: [PATCH 1/2] arm/mm : omit [_text, _stext) from kernel code region Message-ID: References: <1678081915-12599-1-git-send-email-js07.lee@samsung.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1678081915-12599-1-git-send-email-js07.lee@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230306_030820_486199_D18C2E98 X-CRM114-Status: GOOD ( 11.41 ) 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 On Mon, Mar 06, 2023 at 02:51:54PM +0900, Jungseung Lee wrote: > The resource reservations in /proc/iomem made for the kernel code did > not reflect the gaps between pagetable and text. > > In particular, if the CONFIG_STRICT_KERNEL_RWX option is turned on, > the wrong area is shown as the kernel code area. > > Fix it by removing [_text, _stext) from kernel code region. > > Before: > 04000000-2f7fffff : System RAM > 04008000-04cfffff : Kernel code > 04e00000-05369a27 : Kernel data > > After : > 04000000-2f7fffff : System RAM > 04100000-04cfffff : Kernel code > 04e00000-05369a27 : Kernel data And why do you think this is correct? Isn't the head text, which isn't discarded and is located at 0x04008000, still part of kernel code? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel