Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753269AbZJAV4a (ORCPT ); Thu, 1 Oct 2009 17:56:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752539AbZJAV43 (ORCPT ); Thu, 1 Oct 2009 17:56:29 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:11454 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568AbZJAV42 (ORCPT ); Thu, 1 Oct 2009 17:56:28 -0400 X-Greylist: delayed 575 seconds by postgrey-1.27 at vger.kernel.org; Thu, 01 Oct 2009 17:56:28 EDT X-IronPort-AV: E=Sophos;i="4.44,489,1249272000"; d="scan'208";a="67224538" Message-ID: <4AC5234C.5030409@citrix.com> Date: Thu, 01 Oct 2009 14:46:52 -0700 From: Jeremy Fitzhardinge User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3 MIME-Version: 1.0 To: Jan Beulich CC: "ketuzsezr@darnok.org" , "pjones@redhat.com" , Martin Wilck , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] iSCSI/iBFT: use proper address translation References: <4AC47DED0200007800017743@vpn.id2.novell.com> In-Reply-To: <4AC47DED0200007800017743@vpn.id2.novell.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 01 Oct 2009 21:46:56.0003 (UTC) FILETIME=[B2017D30:01CA42E0] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 785 Lines: 18 On 10/01/09 01:01, Jan Beulich wrote: > In virtual environments (namely, Xen Dom0) virt <-> phys and > virt <-> isa-bus translations cannot be freely interchanged. When > looking at memory below 1M, the latter translations should always > be used. > Do you have a different definition for isa_virt_to_bus in your kernel? As far as I can see it is defined to be the same as virt_to_phys. Also, the ISA memory is identity mapped into the domain's physical mapping space, so it should be directly accessible without any problems. J -- 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/