Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261625AbUJ0DWe (ORCPT ); Tue, 26 Oct 2004 23:22:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261621AbUJ0DWd (ORCPT ); Tue, 26 Oct 2004 23:22:33 -0400 Received: from smtp812.mail.sc5.yahoo.com ([66.163.170.82]:52111 "HELO smtp812.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S261620AbUJ0DUk (ORCPT ); Tue, 26 Oct 2004 23:20:40 -0400 From: Dmitry Torokhov To: linux-kernel@vger.kernel.org Subject: Re: Fixing MTRR smp breakage and suspending sysdevs. Date: Tue, 26 Oct 2004 22:20:38 -0500 User-Agent: KMail/1.6.2 Cc: "Li, Shaohua" , , "Pavel Machek" , "Patrick Mochel" References: <16A54BF5D6E14E4D916CE26C9AD30575699E58@pdsmsx402.ccr.corp.intel.com> In-Reply-To: <16A54BF5D6E14E4D916CE26C9AD30575699E58@pdsmsx402.ccr.corp.intel.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200410262220.38052.dtor_core@ameritech.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 824 Lines: 20 On Tuesday 26 October 2004 09:48 pm, Li, Shaohua wrote: > >One thing I have noticed is that by adding the sysdev suspend/resume > >calls, I've gained a few seconds delay. I'll see if I can track down > the > >cause. > Is the problem MTRR resume must be with IRQ enabled, right? Could we > implement a method sysdev resume with IRQ enabled? If I understand correctly the point of classifying device as sysdev is that it (device) is essential for the system and must be suspended last and resumed first, presumably with interrupts off. IRQ controller comes to mind... -- Dmitry - 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/