From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268400AbUHXVyM (ORCPT ); Tue, 24 Aug 2004 17:54:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268353AbUHXVxi (ORCPT ); Tue, 24 Aug 2004 17:53:38 -0400 Received: from rproxy.gmail.com ([64.233.170.194]:3740 "EHLO mproxy.gmail.com") by vger.kernel.org with ESMTP id S268367AbUHXVtX (ORCPT ); Tue, 24 Aug 2004 17:49:23 -0400 Message-ID: <41b516cb0408241449464de5a7@mail.gmail.com> Date: Tue, 24 Aug 2004 14:49:22 -0700 From: Chris Leech Reply-To: Chris Leech To: Roland Dreier Subject: Re: [PATCH] [broken?] Add MSI support to e1000 Cc: "Nguyen, Tom L" , cramerj , "Ronciak, John" , "Venkatesan, Ganesh" , linux-net@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <52u0utvka4.fsf@topspin.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: <52u0utvka4.fsf@topspin.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 23 Aug 2004 10:25:39 -0700, Roland Dreier > Based on the e1000 documentation I have, the only thing required for > the e1000 to use MSI is to set the MSI enable bit in the PCI header. > Of course there may be some e1000 erratum involving MSI but I have not > been able to find any indication that this is the case. Unfortunately, there are issues with current PRO/1000 devices that make MSI unusable. Other testing has show similar results to what you are reporting, under low load a few interrupts can be observed to work but the part stops working when stressed. This is why MSI has not already been enabled in the e1000 driver. -Chris Leech