From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.lixom.net (lixom.net [66.141.50.11]) by ozlabs.org (Postfix) with ESMTP id 509CE67A03 for ; Wed, 19 Apr 2006 00:57:20 +1000 (EST) Date: Tue, 18 Apr 2006 09:56:00 -0500 To: Paul Mackerras Subject: Re: 7447A strange problem with MSR:POW (WAS: can't boot 2.6.17-rc1) Message-ID: <20060418145600.GE20234@pb15.lixom.net> References: <1144408805.30891.42.camel@localhost.localdomain> <17463.9759.442768.685153@cargo.ozlabs.ibm.com> <1144923633.4935.11.camel@localhost.localdomain> <21F7D7D8-B9BC-44EB-B07B-F888D89DCF25@freescale.com> <17471.62187.774127.783000@cargo.ozlabs.ibm.com> <1145048461.4223.38.camel@localhost.localdomain> <17476.31998.168122.413195@cargo.ozlabs.ibm.com> <1145340034.4705.55.camel@localhost.localdomain> <17476.34830.897083.360572@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <17476.34830.897083.360572@cargo.ozlabs.ibm.com> From: Olof Johansson Cc: linuxppc-dev list , Michael Schmitz , debian-powerpc@lists.debian.org, Becky Bruce List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, Apr 18, 2006 at 04:32:46PM +1000, Paul Mackerras wrote: > > understand now why you were talking about putting the code in the exit > > path on irc ... I don't like it that way.... Also, if you want to keep > > it, maybe use a separate CONFIG_PPC_970STYLE_NAP or something that gets > > selected by platforms that can do it ? > > The config option makes sense. How about a CPU feature bit instead? That way it's possible to build a multiplatform kernel without getting the overhead on other platforms. 4 nops should be manageable? -Olof