From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from linode.aoot.com ([69.164.194.13]:60962 "EHLO linode.aoot.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751391AbdBEOGe (ORCPT ); Sun, 5 Feb 2017 09:06:34 -0500 From: "Steve Wise" To: "'Greg KH'" Cc: References: <02ba01d27e3f$8b7c3c20$a274b460$@opengridcomputing.com> <20170205102847.GA28076@kroah.com> In-Reply-To: <20170205102847.GA28076@kroah.com> Subject: RE: [PATCH] iw_cxgb4: set correct FetchBurstMax for QPs Date: Sun, 5 Feb 2017 07:41:45 -0600 Message-ID: <026a01d27fb5$97910f00$c6b32d00$@opengridcomputing.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Language: en-us Sender: stable-owner@vger.kernel.org List-ID: > > commit b414fa01c31318383ae29d9d23cb9ca4184bbd86 > > Author: Steve Wise > > Date: Thu Dec 15 08:09:35 2016 -0800 > > > > iw_cxgb4: set correct FetchBurstMax for QPs > > > > The current QP FetchBurstMax value is 256B, which > > is incorrect since a WR can exceed that value. The > > result being a partial WR fetched by hardware, and > > a fatal "bad WR" error posted by the SGE. > > > > So bump the FetchBurstMax to 512B. > > > > Signed-off-by: Steve Wise > > Signed-off-by: Doug Ledford > > > > I'm not sure if this is the correct way to request this, but I think I'm > > following _option_2 from Documentation/stable_kernel_rules.txt. > > Now queued up. Are you sure this isn't also needed in the 4.4-stable > tree? > Hey Greg, At first, I didn't think it is needed because, while the bug is indeed present in that code, it is only exposed (and causes problems) with the new T6 hardware. But now I think I'd like the fix pulled in 4.4-stable to avoid any issues if T6 support is pulled into that base. Thanks! Steve