From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-in-03.arcor-online.net (mail-in-03.arcor-online.net [151.189.21.43]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.arcor.de", Issuer "Thawte Premium Server CA" (verified OK)) by ozlabs.org (Postfix) with ESMTP id F28D1DDF92 for ; Thu, 3 May 2007 03:58:31 +1000 (EST) In-Reply-To: <1178116438.13233.65.camel@johannes.berg> References: <17969.56735.644629.328360@cargo.ozlabs.ibm.com> <1178086872.13233.27.camel@johannes.berg> <17976.28170.695715.416339@cargo.ozlabs.ibm.com> <1178116438.13233.65.camel@johannes.berg> Mime-Version: 1.0 (Apple Message framework v623) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <9e6a5a396bff2c6bc4728c9fa0b1a0c8@kernel.crashing.org> From: Segher Boessenkool Subject: Re: [PATCH] powermac: support G5 CPU hotplug Date: Wed, 2 May 2007 19:57:47 +0200 To: Johannes Berg Cc: linuxppc-dev@ozlabs.org, Paul Mackerras List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , >> Ultimately we want to put the disabled cpus in sleep mode, but that >> will require a suitable cache flush routine. > > I don't have any docs for the particular processors the G5s have, do > they have a sleep mode? Yes; they have many different power saving modes (doze, nap, deep nap, sleep), and the clock can be scaled down, too. The details are different for each of 970, 970FX, 970MP. Documentation for 970FX and 970MP is here: Segher