From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754754AbZEYWih (ORCPT ); Mon, 25 May 2009 18:38:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752677AbZEYWi3 (ORCPT ); Mon, 25 May 2009 18:38:29 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:55188 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751715AbZEYWi2 (ORCPT ); Mon, 25 May 2009 18:38:28 -0400 Date: Mon, 25 May 2009 23:38:14 +0100 From: Alan Cox To: Bartlomiej Zolnierkiewicz Cc: Jeff Garzik , Jacob , Christopher Hogan , Robert Hancock , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] libata: add warning about possible HPA compatibility issue Message-ID: <20090525233814.4cb8b1c2@lxorguk.ukuu.org.uk> In-Reply-To: <200905260036.17718.bzolnier@gmail.com> References: <200905252348.08970.bzolnier@gmail.com> <20090525232014.7b6dd7bd@lxorguk.ukuu.org.uk> <200905260036.17718.bzolnier@gmail.com> X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > NAK - this is extremely misleading and will just randomly terrify users, > > who may then set the paramater and corrupt things like BIOS save areas. > > Please propose better description. As was discussed before Tejun has a patch in the queue which exposes the HPA and real sizes to the OS Libata can support revalidating a disc Once the HPA/Real size data is there the tools can be tuned for this and a sysfs node added to switch hpa on/off per disc. At that point this can be done by the user space intelligently. The fact this is a user parameter is itself a problem.