From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Scobie Subject: RE: mptsas hangs caused by ATA pass-through explained Date: Fri, 04 Jun 2010 08:07:36 +1200 Message-ID: <4C080B88.205@sauce.co.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.sauce.co.nz ([210.48.49.72]:33277 "EHLO smtp.sauce.co.nz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751404Ab0FCUOS (ORCPT ); Thu, 3 Jun 2010 16:14:18 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: "Desai, Kashyap" Kashyap wrote: I have also verified this patch + also done code review with our developers including Eric Moore. Please consider this patch as an ACKed patch and schedule it for next upstream release. ---------------------- Hi, In comment #20 of this bug entry: https://bugzilla.kernel.org/show_bug.cgi?id=14831 you state: "Patch for setting dma boundary is mere avoiding condition which is causing this issue. LSI Gen-1 controller does not have 512byte dma boundary limitation. I have started internal chat with our Firmware engineer. I will update you findings as and when some imp stuffs are found." Is this still the case, or is the patch the final fix? Also, comment #25 in the same thread notes a significant negative write performance impact. Are you seeing this? I have several machines in production I would like to update, but not if there is a better solution to this on it's way. Regards, Richard