From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH] SCSI midlayer power management Date: Thu, 12 Aug 2004 21:11:20 +0200 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20040812191120.GA14903@elf.ucw.cz> References: <4119611D.60401@optonline.net> <20040811080935.GA26098@elf.ucw.cz> <411A1B72.1010302@optonline.net> <1092231462.2087.3.camel@mulgrave> <1092267400.2136.24.camel@gaston> <1092314892.1755.5.camel@mulgrave> <20040812131457.GB1086@elf.ucw.cz> <1092328173.2184.15.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from gprs214-76.eurotel.cz ([160.218.214.76]:59013 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S264147AbUHLTLj (ORCPT ); Thu, 12 Aug 2004 15:11:39 -0400 Content-Disposition: inline In-Reply-To: <1092328173.2184.15.camel@mulgrave> List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Benjamin Herrenschmidt , Nathan Bryant , Linux SCSI Reflector , Linux Kernel list , Jeff Garzik Hi! > > Even read-only access could hurt.... That DMA engine is going to get > > very unhappy if we change data from under it, right? > > But we're not planning to change this area of memory (it's a driver > allocated coherent mbox) until we power off the box, right? so it should > be just like a reboot today. Ok, but what happens on next resume? If coherent mbox is at exactly same place at every boot I guess it could even work, but... Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!