Received: by 2002:ac0:a581:0:0:0:0:0 with SMTP id m1-v6csp1245671imm; Tue, 3 Jul 2018 07:57:34 -0700 (PDT) X-Google-Smtp-Source: AAOMgpfsWt1LcfCKF3yQxN/VM/3RhQp+rC+kTJOUu7LnF/cwO5t3H4Aq6gZ2jKwgzo3Vg16acanN X-Received: by 2002:a63:ff21:: with SMTP id k33-v6mr4947200pgi.38.1530629854855; Tue, 03 Jul 2018 07:57:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1530629854; cv=none; d=google.com; s=arc-20160816; b=qtqJr+s48x8Nc+vh+N7gtgOiBFuML0dNEArUKOTXPe1/wePZdGc1/aK0p5ywPa8ad7 7bgnKvu+qgONwUhMC1vG9YqUMe7UnEhlBy1URdgA1wLIu2/ItNvyxG4eDdt5bb4VSu23 mOaEvgPku6nc0b0qB0NBUf5dNhZCLa8eFL+gUJv0egnNJayDJUWeLZeDALEKd1f3jsEd 009NNnEewDZ4dlX/BJMmyDCSB49W4UjbpFyW3jG7F1b0vNWg9OuCC6xg47AQyHaAZkk/ VEGhXWazX4ti3N7BiPHPNL4sBa6Mgrg++BiPNv18/WwZV6o2/VJF9VKlWEfaGOdUS4/N TLsw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=H6+4R7FgQFAXX3GxuM1f7UqwE1hWR9WKOfaMfcgWllo=; b=QZ7y5tb3evmKVmtGW1r7w2poRHPsPYmSiWFw+33dHMgz0yjpmwO7neNu77/teKCMh8 snvIAh6LANk2n3FG1O+cvO/k9y8nZBtD4rEbCyuB2XKH9WQhVF5if6lGPG+Gzs80ztcc B6seGeEMPCBhLojyAqZLnUB/3zJ+7LkI1RrIDh9fzzSm63aIBJkuN7AyNIs+HDxdGeSN 3wGTtlm25hDtVBtJBnnOuwe6g1lwuIo/uW43kqnoG2CJNbbY3zENhK7k48cr7PqP7bIv ENjCrdKGLmM6w3T7LJ9l5Nj/0Rb1r1t6BlJEuvt+P0QkNFW4HqrbrxY2eVwt+5xMGpL8 uFVA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 7-v6si1285677plc.179.2018.07.03.07.57.19; Tue, 03 Jul 2018 07:57:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932747AbeGCO4c (ORCPT + 99 others); Tue, 3 Jul 2018 10:56:32 -0400 Received: from foss.arm.com ([217.140.101.70]:50638 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932238AbeGCO4b (ORCPT ); Tue, 3 Jul 2018 10:56:31 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 13F677A9; Tue, 3 Jul 2018 07:56:31 -0700 (PDT) Received: from armageddon.cambridge.arm.com (armageddon.cambridge.arm.com [10.1.206.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 05F553F5AD; Tue, 3 Jul 2018 07:56:29 -0700 (PDT) Date: Tue, 3 Jul 2018 15:56:27 +0100 From: Catalin Marinas To: Nikunj Kela Cc: Will Deacon , xe-kernel@external.cisco.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/2] arm64: add support for 43bit physical address Message-ID: <20180703145626.g6pb4bgnrle2p2qf@armageddon.cambridge.arm.com> References: <20180702210451.16057-2-nkela@cisco.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180702210451.16057-2-nkela@cisco.com> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 02, 2018 at 02:04:51PM -0700, Nikunj Kela wrote: > This patch adds support for 43bit physical address. Additionally, > this patch adds support for 27bit section size. This is useful in > reducing kernel memory usage. One usecase is in kdump kernel. Some numbers please. -- Catalin