From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 8FACC679E0 for ; Sat, 15 Apr 2006 07:01:13 +1000 (EST) Subject: Re: 7447A strange problem with MSR:POW (WAS: can't boot 2.6.17-rc1) From: Benjamin Herrenschmidt To: Paul Mackerras In-Reply-To: <17471.62187.774127.783000@cargo.ozlabs.ibm.com> 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> Content-Type: text/plain Date: Sat, 15 Apr 2006 07:01:01 +1000 Message-Id: <1145048461.4223.38.camel@localhost.localdomain> Mime-Version: 1.0 Cc: Becky Bruce , Michael Schmitz , debian-powerpc@lists.debian.org, linuxppc-dev list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2006-04-14 at 12:07 -0700, Paul Mackerras wrote: > Becky Bruce writes: > > > Actually, I think the problem is that the code linux is using to turn > > on nap mode is not guaranteed to put the processor in nap mode by the > > time the blr in ppc6xx_idle occurs. > > Thanks, Becky. > > This patch fixes it for me. Comments, anyone? Looks good to me except that we need the same for ppc64 since the 970 theorically has the same problem... Ben.