From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753278AbXCWSPI (ORCPT ); Fri, 23 Mar 2007 14:15:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753280AbXCWSPI (ORCPT ); Fri, 23 Mar 2007 14:15:08 -0400 Received: from x35.xmailserver.org ([64.71.152.41]:41341 "EHLO x35.xmailserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753278AbXCWSPH (ORCPT ); Fri, 23 Mar 2007 14:15:07 -0400 X-AuthUser: davidel@xmailserver.org Date: Fri, 23 Mar 2007 11:15:02 -0700 (PDT) From: Davide Libenzi X-X-Sender: davide@alien.or.mcafeemobile.com To: Nick Piggin cc: Ingo Molnar , Linux Kernel Mailing List Subject: Re: [rfc][patch] queued spinlocks (i386) In-Reply-To: <20070323101042.GD11577@wotan.suse.de> Message-ID: References: <20070323085910.GA11577@wotan.suse.de> <20070323100418.GA30740@elte.hu> <20070323101042.GD11577@wotan.suse.de> X-GPG-FINGRPRINT: CFAE 5BEE FD36 F65E E640 56FE 0974 BF23 270F 474E X-GPG-PUBLIC_KEY: http://www.xmailserver.org/davidel.asc MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 23 Mar 2007, Nick Piggin wrote: > On Fri, Mar 23, 2007 at 11:04:18AM +0100, Ingo Molnar wrote: > > > > * Nick Piggin wrote: > > > > > Implement queued spinlocks for i386. [...] > > > > isnt this patented by MS? (which might not worry you SuSE/Novell guys, > > but it might be a worry for the rest of the world ;-) > > I never thought a FIFO queue would be patentable. > > Do you have a reference to the patent number? FWIW, MS patented even the preprocessor in computer languages ;) Holding a patent does not make it automatically enforceable. I remember thare was a discussion time ago about queued spinlocks on lkml. - Davide