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=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,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 37E29C433DB for ; Thu, 25 Feb 2021 10:51:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DE58C64EAF for ; Thu, 25 Feb 2021 10:51:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233269AbhBYKvM (ORCPT ); Thu, 25 Feb 2021 05:51:12 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:54296 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229845AbhBYKfw (ORCPT ); Thu, 25 Feb 2021 05:35:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614249265; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NA0XhNNgXWdKWddYRBJjHOR9CD09LFOv4oAxt+/QKh8=; b=WdDPOmJMbQqk2KIzJr4ckI2A0+ta0zHd1vnLd0BFaRrtSB//xK7HFmmhZuuiPPJylza3y0 3x6sRE5UmHJPRwtIoQNx1VoNuwU3at0Smw31KGAOH6AdB7hPLFQ/piGPX3+JGdrBzfiS0e 8nuIGRj6FcoZOTTduWukG9/SA31Bzew= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-464-yrGz6ss2PRqE8fSc9ob9ug-1; Thu, 25 Feb 2021 05:34:21 -0500 X-MC-Unique: yrGz6ss2PRqE8fSc9ob9ug-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6854B19611A2; Thu, 25 Feb 2021 10:34:18 +0000 (UTC) Received: from [10.36.114.58] (ovpn-114-58.ams2.redhat.com [10.36.114.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id 658C619801; Thu, 25 Feb 2021 10:34:14 +0000 (UTC) Subject: Re: [PATCH 2/3] Documentation: riscv: Add documentation that describes the VM layout To: Alexandre Ghiti , Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Arnd Bergmann , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-mm@kvack.org References: <20210225080453.1314-1-alex@ghiti.fr> <20210225080453.1314-3-alex@ghiti.fr> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: <5279e97c-3841-717c-2a16-c249a61573f9@redhat.com> Date: Thu, 25 Feb 2021 11:34:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210225080453.1314-3-alex@ghiti.fr> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org | | | |> + ffffffc000000000 | -256 GB | ffffffc7ffffffff | 32 GB | kasan > + ffffffcefee00000 | -196 GB | ffffffcefeffffff | 2 MB | fixmap > + ffffffceff000000 | -196 GB | ffffffceffffffff | 16 MB | PCI io > + ffffffcf00000000 | -196 GB | ffffffcfffffffff | 4 GB | vmemmap > + ffffffd000000000 | -192 GB | ffffffdfffffffff | 64 GB | vmalloc/ioremap space > + ffffffe000000000 | -128 GB | ffffffff7fffffff | 126 GB | direct mapping of all physical memory ^ So you could never ever have more than 126 GB, correct? I assume that's nothing new. -- Thanks, David / dhildenb