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 X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD712C433E1 for ; Sat, 15 Aug 2020 09:21:03 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6D8AE22EBF for ; Sat, 15 Aug 2020 09:21:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aZEJyv7i"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="fDTuEkmo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D8AE22EBF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject: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=zhPFN1nVEJGlvkrONp0Ddb68HDLf5gROX7j63fXVBXk=; b=aZEJyv7iwicP9dXBSq/SxRpy2 P0wTe4/eueulHrqw9i/s2dJ64nfsvPUEoeP3XdeL513SgbXiJq6W82WjE7TShZs7G/7Itj8IovOyb /VMcwsFzCVLJR5LPh6LmWkP0Lz2o+ZIlX9h9pRrsCiP9y/ZUVqcuPZNRMlQmODDColn+irs7y21mx Z+g6WZRnPrJbEQ+zw1r5Nv+vr8q5VazjDhrXb4f0bFf0vBHcJI6UJXyekCzSa0MBVqxvdSyPDZpl6 16f0kqjFozLfyGTl8AOfgDAmZT69qo8MD+rY6hERxLZcdCWktFS+m5XXgFUDk21RlzG69QRo7JZjn 0EGIzfP2A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6sL8-0005Dg-FE; Sat, 15 Aug 2020 09:19:02 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6sL4-0005AV-IZ for linux-arm-kernel@lists.infradead.org; Sat, 15 Aug 2020 09:19:00 +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=Y1H4KExg+Xxb97SUH1b1DBcijfRUO6lVoBXvieHFdbo=; b=fDTuEkmopPzKN+Nf+a5xb5WIe iB/WKM08ObT8zzPqMRIFh7z1pZcSOrM9N0SB0OrEK6KndpD6FIzAlV8VrUl3b0JOJJ/OJGFygRQ6q CxYtRKLMBTJAOtBC35WJGLUmtZZtsdYPeBbpld7zs/Mw4vGcHHTqLucoYhYQO5FryFqSdf6vzuqYL dhYmYUTD9oXOGqJeF6Yx5FBjNcPTYiRVJ4+1VtXCNMyKiEcKvOASxPj9DEe2wBrvXrYUtQaCaWZrt 0QheXGiOStQ0vUn2dbqJcDgZH+837vZ285c7g0LP9nm11sSfrDRAPIZqOH3OTNhhllA80bcN4iqfw fbctn1Lcw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:52758) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k6sIc-0005Dj-ND; Sat, 15 Aug 2020 10:16:26 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1k6sIX-0006hf-1w; Sat, 15 Aug 2020 10:16:21 +0100 Date: Sat, 15 Aug 2020 10:16:21 +0100 From: Russell King - ARM Linux admin To: Linus Walleij Subject: Re: [PATCH/RFC v7] ARM: boot: Obtain start of physical memory from DTB Message-ID: <20200815091620.GV1551@shell.armlinux.org.uk> References: <20200706150205.22053-1-geert+renesas@glider.be> <159546718359.3847286.13460778905630969897@swboyd.mtv.corp.google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200815_051858_838775_E49B3DAE X-CRM114-Status: GOOD ( 13.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kumar Gala , Arnd Bergmann , Geert Uytterhoeven , Nicolas Pitre , Stephen Boyd , Masahiro Yamada , Lukasz Stelmach , Bjorn Andersson , Linux-Renesas , Chris Brandt , Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= , Eric Miao , Dmitry Osipenko , Laura Abbott , Ard Biesheuvel , Linux ARM , Marek Szyprowski 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 Fri, Aug 14, 2020 at 04:03:41PM +0200, Linus Walleij wrote: > But TEXT_OFFSET is also used inside the kernel to offset the > virtual memory. This means that when we set up the virtual > memory split, the kernel virtual memory is also bumped by > these 2 MB so the virtual memory starts at 0xC0208000 > instead of 0xC0008000 as is normal. No. Virtual memory starts without the 32KiB offset. The L1 swapper page table starts 16KiB below (or slightly more if LPAE) for example. -- 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