From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: Fresh install of Windows XP hangs early in boot? Date: Tue, 29 Jul 2008 22:14:21 -0300 Message-ID: <20080730011421.GA23403@dmt.cnet> References: <20080729212332.GA8331@dmt.cnet> <20080729225734.GA15606@dmt.cnet> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm-devel To: Roland Dreier Return-path: Received: from mx1.redhat.com ([66.187.233.31]:43041 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753608AbYG3BOx (ORCPT ); Tue, 29 Jul 2008 21:14:53 -0400 Content-Disposition: inline In-Reply-To: <20080729225734.GA15606@dmt.cnet> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, Jul 29, 2008 at 07:57:34PM -0300, Marcelo Tosatti wrote: > On Tue, Jul 29, 2008 at 03:00:06PM -0700, Roland Dreier wrote: > > > Known problem: > > > http://www.nabble.com/LSI:-avoid-infinite-loops-p17116605.html > > > > > Windows driver has scripts code which busy loops on main memory. Since > > > that executes in vcpu context, the cpu won't ever get a chance to change > > > the variable which the SCSI emulation is looping at. > > > > Thanks Marcelo (and Alberto) for pointing me at this. > > > > > The proposed hack, however, is half-assed (see Paul Brook's comments on > > > that thread). > > > > I'd be willing to take a stab at a better fix. > > Awesome! That would be very welcome. It is quite important for > better-than-IDE performance with Windows guests. > > > Is there any documentation about the lsi microcode engine anywhere? > > http://www.lsi.com/files/docs/techdocs/storage_stand_prod/SCSIControllers/56_3.pdf http://www.lsi.com/files/docs/techdocs/storage_stand_prod/SCSIControllers/53c896_3.pdf