From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754662AbYAGFdM (ORCPT ); Mon, 7 Jan 2008 00:33:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750954AbYAGFc7 (ORCPT ); Mon, 7 Jan 2008 00:32:59 -0500 Received: from hqemgate04.nvidia.com ([216.228.112.152]:7265 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751184AbYAGFc6 convert rfc822-to-8bit (ORCPT ); Mon, 7 Jan 2008 00:32:58 -0500 X-PGP-Universal: processed; by hqnvupgp04.nvidia.com on Sun, 06 Jan 2008 21:32:50 -0800 X-MimeOLE: Produced By Microsoft Exchange V6.5 MIME-Version: 1.0 Subject: RE: [PATCH] msi: set 'En' bit of MSI Mapping Capability Date: Mon, 7 Jan 2008 13:32:28 +0800 Message-ID: <15F501D1A78BD343BE8F4D8DB854566B1FD7D6B5@hkemmail01.nvidia.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [PATCH] msi: set 'En' bit of MSI Mapping Capability Thread-Index: AchGIxCwaS2ghDupTG+xhYihZwo7dgHAmXLAAPI1AWA= References: <200712182300373901202@gmail.com><15F501D1A78BD343BE8F4D8DB854566B1F24C119@hkemmail01.nvidia.com><15F501D1A78BD343BE8F4D8DB854566B1F571D0F@hkemmail01.nvidia.com> From: "Peer Chen" To: "Peer Chen" , "Eric W. Biederman" Cc: "peerchen" , "linux-kernel" , "akpm" , "Andy Currid" X-OriginalArrivalTime: 07 Jan 2008 05:32:43.0199 (UTC) FILETIME=[B9EFACF0:01C850EE] Content-class: urn:content-classes:message Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Eric, Any decision for this patch, if not, currently we prefer to add all our code to quirks.c. BRs Peer Chen -----Original Message----- From: Peer Chen Sent: Wednesday, January 02, 2008 5:58 PM To: 'Eric W. Biederman' Cc: peerchen; linux-kernel; akpm; Andy Currid Subject: RE: [PATCH] msi: set 'En' bit of MSI Mapping Capability I think it's more reasonable to only apply this rule onto AMD platform. BRs Peer Chen -----Original Message----- From: Eric W. Biederman [mailto:ebiederm@xmission.com] Sent: Monday, December 24, 2007 7:49 PM To: Peer Chen Cc: peerchen; linux-kernel; akpm; Andy Currid Subject: Re: [PATCH] msi: set 'En' bit of MSI Mapping Capability "Peer Chen" writes: > I feel it's dangerous to set the En bit on Intel platform, If the HT MSI > En is set, the MSI should be expected to transform to HT INT message > format. It may cause interrupt lost or hardware internal state machine > failed depend on the hardware design. Reasonable. As long as what the quirk is to avoid errata and chipset specific issues I don't have a problem with it. I figure the quirk should be a separate patch though. My concern is that the general rule that always enabling HT MSI mapping capabilities is reasonable. Even if there are some specific exceptions where we don't want to do that. I want code that requires the smallest list of chipset exceptions that we can make. Eric ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------