From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965846AbXBOKqW (ORCPT ); Thu, 15 Feb 2007 05:46:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965844AbXBOKqW (ORCPT ); Thu, 15 Feb 2007 05:46:22 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:54868 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965843AbXBOKqS (ORCPT ); Thu, 15 Feb 2007 05:46:18 -0500 Message-ID: <45D439F7.3030604@garzik.org> Date: Thu, 15 Feb 2007 05:46:15 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.9 (X11/20070130) MIME-Version: 1.0 To: Robert Hancock CC: linux-kernel , linux-ide@vger.kernel.org, Allen Martin , nas@arctrix.com, B.Steinbrink@gmx.de Subject: Re: sata_nv ADMA controller lockup investigation References: <45D3E1FF.3080606@shaw.ca> In-Reply-To: <45D3E1FF.3080606@shaw.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.7 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Robert Hancock wrote: > It's curious that only the post-cache-flush command is having issues, > and normal NCQ operation seems fine. Maybe it's related to that tag 0 > being reused repeatedly? If you take cache flush out of the equation, what happens when NCQ is enabled with a queue depth of 1 (to reproduce tag-0-used-repeatedly condition)? Jeff