From owner-freebsd-alpha Thu Dec 14 12:30:58 2000 From owner-freebsd-alpha@FreeBSD.ORG Thu Dec 14 12:30:55 2000 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from mail.du.gtn.com (mail.du.gtn.com [194.77.9.57]) by hub.freebsd.org (Postfix) with ESMTP id 3D55B37B400; Thu, 14 Dec 2000 12:30:51 -0800 (PST) Received: from mail.cicely.de (cicely.de [194.231.9.142]) by mail.du.gtn.com (8.11.0.Beta3/8.11.0.Beta3) with ESMTP id eBEKUS219165 (using TLSv1/SSLv3 with cipher EDH-RSA-DES-CBC3-SHA (168 bits) verified OK); Thu, 14 Dec 2000 21:30:30 +0100 (MET) Received: from cicely5.cicely.de (cicely5.cicely.de [fec0:0:0:104::5]) by mail.cicely.de (8.11.0.Beta1/8.11.0.Beta1) with ESMTP id eBEKUim22960 (using TLSv1/SSLv3 with cipher EDH-RSA-DES-CBC3-SHA (168 bits) verified NO); Thu, 14 Dec 2000 21:30:50 +0100 (CET) Received: (from ticso@localhost) by cicely5.cicely.de (8.11.1/8.11.1) id eBEKUiZ60468; Thu, 14 Dec 2000 21:30:44 +0100 (CET) (envelope-from ticso) Date: Thu, 14 Dec 2000 21:30:44 +0100 From: Bernd Walter To: Matthew Jacob Cc: Andrew Gallatin , John Baldwin , alpha@FreeBSD.ORG Subject: Re: mutex/ithread jitters? Message-ID: <20001214213044.A60434@cicely5.cicely.de> References: <14905.7357.440285.591097@grasshopper.cs.duke.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: ; from mjacob@feral.com on Thu, Dec 14, 2000 at 11:24:50AM -0800 Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, Dec 14, 2000 at 11:24:50AM -0800, Matthew Jacob wrote: > > As Doug mentioned before, leaving the ipl raised would probably be > > more efficient that groveling around in the interrupt hardware. And > > it would be nice to not make every platform have to be 100% perfect > > wrt to enabling/disabling interrupts... > > No arguments from me on this one (after all, ahem, I suggested it first!). But > I haven't gotten around to breaking free the day or so it will take to do > this. The workaround for the PC164 brokeness should also work on other EV56 and up alphas. The only unclear thing is if the SRM of that machine supports the needed functionality to get access to the pal privileged commands. I asume it's worth to test as it's simple to bring in. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message