From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755727AbZLQMCO (ORCPT ); Thu, 17 Dec 2009 07:02:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764526AbZLQMCM (ORCPT ); Thu, 17 Dec 2009 07:02:12 -0500 Received: from mail-yw0-f182.google.com ([209.85.211.182]:40036 "EHLO mail-yw0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752457AbZLQMCJ (ORCPT ); Thu, 17 Dec 2009 07:02:09 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=PMuxdpKY87wc5iUvRE8HBIrgt8SaNlzeSxTB1JFQRizAj4LcisZ30R2IXr7El9kiuL sr5Msw0SaLvhsILExyv4ub2d0uSqvYqbxixdtJ28WcXRkoAYUalXjPvRrilri9PVt9kn mYPxkYhTSRPPVzF3HXvO6q5GIYt9fRzZ1OW1U= Message-ID: <4B2A1DBA.3070300@garzik.org> Date: Thu, 17 Dec 2009 07:02:02 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-3.fc11 Thunderbird/3.0 MIME-Version: 1.0 To: Romain Kubany CC: Mikael Pettersson , "linux-kernel@vger.kernel.org" , "linux-ide@vger.kernel.org" Subject: Re: Possible regression of LBA48 support for piix References: <19241.63911.160765.909812@pilspetsen.it.uu.se> <4B2A1008.9070202@garzik.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/17/2009 06:34 AM, Romain Kubany wrote: > Thanks for your concern. :) > > Here is the full dmesg output : http://pastebin.com/f484004a5 (2.6.28 with same config as in my previous mail) > > I'm going to test a 2.6.32.1 kernel and similar config [ 0.804002] ata1.00: ATA-0: Virtual HD, 1.1.0, max MWDMA2 [ 0.804002] ata1.00: 267382800 sectors, multi 128: LBA For starters, the virtual disk is reporting ATA version 0. That means the disk is telling us it does not support LBA48 or other advanced features. libata (and probably IDE, too) happily obliges. That sounds like either a broken emulation, or some information returned from the virtual disk got zeroed somehow. Jeff