Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935002AbXLQCVW (ORCPT ); Sun, 16 Dec 2007 21:21:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756838AbXLQCVO (ORCPT ); Sun, 16 Dec 2007 21:21:14 -0500 Received: from ug-out-1314.google.com ([66.249.92.171]:31004 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750886AbXLQCVN (ORCPT ); Sun, 16 Dec 2007 21:21:13 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=dLksclDyY4ksxbmS9MnFWJAVHuJh8J5uv/sZfu+HcEzcNIE10oqDGlLZn+KUufmR5NzwsOSs+Ul1kNHzXogqYcQq6UvR7spWwjIUkzXMYLPiA9dRtzmlxsa4S+AvH/p7Yqomkrgw+9eCqsCehVgmrX4qzko5hjaR5MLDeoj8MdU= Message-ID: <4765DCB0.8030901@gmail.com> Date: Mon, 17 Dec 2007 03:19:28 +0100 From: Rene Herman User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: "H. Peter Anvin" CC: Ingo Molnar , Paul Rolland , Alan Cox , Pavel Machek , "David P. Reed" , Thomas Gleixner , linux-kernel@vger.kernel.org, Ingo Molnar , rol@witbe.net Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. References: <4762C551.5070003@zytor.com> <20071214210652.GB28793@elf.ucw.cz> <4763001A.1070102@zytor.com> <20071214232955.545ab809@the-village.bc.nu> <20071215080831.404cdb32@tux.DEF.witbe.net> <47638C8C.2090604@gmail.com> <476438B4.2020600@zytor.com> <476462BE.3030701@gmail.com> <4764687D.6080609@zytor.com> <476524DB.7020806@gmail.com> <20071216152250.GA21245@elte.hu> <4765D43E.1010800@gmail.com> <4765D95C.4010404@zytor.com> In-Reply-To: <4765D95C.4010404@zytor.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 772 Lines: 23 On 17-12-07 03:05, H. Peter Anvin wrote: > Incidentally, I had the thought earlier today that port 0xf0 might be a > suitable delay port. It is used only by the 387-emulating-a-287 hack > for IRQ 13, which Linux doesn't use on 486+. rene@7ixe4:~/src/port80$ su -c ./port80 cycles: out 2400, in 2400 rene@7ixe4:~/src/port80$ su -c ./portf0 cycles: out 2400, in 2400 (Duron 1300) I suppose you mean using it instead of port 0x80 always and not just as an alternate port? For the latter 0xed is alright I guess... Rene. -- 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/