Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149Ab0FNPM3 (ORCPT ); Mon, 14 Jun 2010 11:12:29 -0400 Received: from terminus.zytor.com ([198.137.202.10]:50809 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754533Ab0FNPM0 (ORCPT ); Mon, 14 Jun 2010 11:12:26 -0400 Message-ID: <4C1646C4.1010002@zytor.com> Date: Mon, 14 Jun 2010 08:12:04 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: Kenji Kaneshige CC: Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, jbarnes@virtuousgeek.org Subject: Re: [PATCH 2/4] x86: ioremap: fix physical address check References: <4C11FF10.4060203@jp.fujitsu.com> <4C11FFC0.1030006@jp.fujitsu.com> <4C1275BF.3070605@zytor.com> <4C158BCF.6000303@jp.fujitsu.com> <4C15E7F4.9090607@jp.fujitsu.com> In-Reply-To: <4C15E7F4.9090607@jp.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 624 Lines: 20 On 06/14/2010 01:27 AM, Kenji Kaneshige wrote: > > Please ignore above. I misunderstood the architectural limit of physical > address in x86 32-bit mode. It is not 40-bits, but 52-bits. > Well, it can be anywhere from 32 to 52 bits, depending on the hardware. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/