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 E5C0F67A3A for ; Wed, 19 Apr 2006 02:04:05 +1000 (EST) Date: Tue, 18 Apr 2006 11:03:30 -0500 To: Olof Johansson Subject: Re: 7447A strange problem with MSR:POW (WAS: can't boot 2.6.17-rc1) Message-ID: <20060418160330.GB26746@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> <20060418145600.GE20234@pb15.lixom.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20060418145600.GE20234@pb15.lixom.net> From: Olof Johansson Cc: linuxppc-dev list , Michael Schmitz , debian-powerpc@lists.debian.org, Paul Mackerras , 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 09:56:00AM -0500, Olof Johansson wrote: > 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? DOH! I'm going blind, that's already there. So, Ben, you're unhappy with nopping it out? -Olof