Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762946AbXEYPms (ORCPT ); Fri, 25 May 2007 11:42:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751525AbXEYPmm (ORCPT ); Fri, 25 May 2007 11:42:42 -0400 Received: from sj-iport-6.cisco.com ([171.71.176.117]:14860 "EHLO sj-iport-6.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751043AbXEYPml (ORCPT ); Fri, 25 May 2007 11:42:41 -0400 X-IronPort-AV: i="4.14,580,1170662400"; d="scan'208"; a="154493052:sNHT45937773" To: ebiederm@xmission.com (Eric W. Biederman) Cc: Greg KH , Jay Cliburn , Grzegorz Krzystek , Andrew Morton , Andi Kleen , ninex@o2.pl, linux-kernel@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz, Michael Ellerman , David Miller , Tony Luck Subject: Re: [PATCH 1/2] msi: Invert the sense of the MSI enables. X-Message-Flag: Warning: May contain useful information References: <20070514093829.377e04bc@osprey.hogchain.net> <20070514160005.627435e3@osprey.hogchain.net> <20070515212200.517fcba2@osprey.hogchain.net> <20070516185225.3f3ac082@osprey.hogchain.net> <20070522204103.134bf5a2@osprey.hogchain.net> <20070525052032.GB9386@suse.de> From: Roland Dreier Date: Fri, 25 May 2007 08:42:39 -0700 In-Reply-To: (Roland Dreier's message of "Fri, 25 May 2007 08:40:38 -0700") Message-ID: User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.4.19 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 25 May 2007 15:42:39.0522 (UTC) FILETIME=[53462820:01C79EE3] Authentication-Results: sj-dkim-6; header.From=rdreier@cisco.com; dkim=pass ( sig from cisco.com/sjdkim6002 verified; ); Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 725 Lines: 18 > > - In spec hardware does not require MSI to generate interrupts > > Which leaves enabling MSI optional. > > Actually at least the Qlogic/Pathscale PCI Express ipath adapters > cannot generate INTx interrupts -- they definitely do require MSI to > operate. Oh yeah... when I first found out about this, I rechecked the PCI Express spec and found that in fact legacy INTx interrupts are optional. So the ipath adapters that require MSI do conform to the spec. - R. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/