Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932632Ab3DDBcg (ORCPT ); Wed, 3 Apr 2013 21:32:36 -0400 Received: from terminus.zytor.com ([198.137.202.10]:45923 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761206Ab3DDBcf (ORCPT ); Wed, 3 Apr 2013 21:32:35 -0400 Message-ID: <515CD81D.6020603@zytor.com> Date: Wed, 03 Apr 2013 18:32:13 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 MIME-Version: 1.0 To: Simon Jeons CC: Frantisek Hrbata , linux-kernel@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, mingo@redhat.com, x86@kernel.org, oleg@redhat.com, kamaleshb@in.ibm.com, hechjie@cn.ibm.com Subject: Re: [PATCH] x86: add phys addr validity check for /dev/mem mmap References: <1364905733-23937-1-git-send-email-fhrbata@redhat.com> <515B2802.1050405@zytor.com> <515CD359.40004@gmail.com> <515CD3BF.5010104@zytor.com> <515CD4A7.6070903@gmail.com> In-Reply-To: <515CD4A7.6070903@gmail.com> X-Enigmail-Version: 1.5.1 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: 410 Lines: 19 On 04/03/2013 06:17 PM, Simon Jeons wrote: > > e820 also contain mmio, correct? No. > So cpu should not access address beyond > e820 map(RAM+MMIO). No. -hpa -- 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/