From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH RFC] ahci: implement handoff quirk Date: Sat, 11 Apr 2009 10:51:51 -0700 Message-ID: <49E0D8B7.8010206@kernel.org> References: <485882FE.1060409@kernel.org> <49E0CB5B.3070807@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:47758 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757692AbZDKRwL (ORCPT ); Sat, 11 Apr 2009 13:52:11 -0400 In-Reply-To: <49E0CB5B.3070807@garzik.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: IDE/ATA development list , "Zhao, Richard" , shane.huang@amd.com Jeff Garzik wrote: > We probably need to do this... > > it's not a controller requirement but a BIOS one, so in theory even an > existing, deployed AHCI 1.2 platform could suddenly require BIOS/OS > handoff, if a BIOS update suddenly starts doing new and weird stuff in SMI. > > Note that we need to do BIOS/OS handoff upon resume as well as at boot > time. Yeah, probably. Do you know of any system which makes use of this feature? I'm a bit uneasy about committing it without any testing. Thanks. -- tejun