From owner-freebsd-xen@FreeBSD.ORG Tue Sep 22 17:19:20 2009 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3D23C1065670 for ; Tue, 22 Sep 2009 17:19:20 +0000 (UTC) (envelope-from lab@gta.com) Received: from mailgate.gta.com (mailgate.gta.com [199.120.225.20]) by mx1.freebsd.org (Postfix) with SMTP id 7A2568FC0A for ; Tue, 22 Sep 2009 17:19:19 +0000 (UTC) Received: (qmail 87337 invoked by uid 1000); 22 Sep 2009 17:19:18 -0000 Date: Tue, 22 Sep 2009 13:19:18 -0400 From: Larry Baird To: Kevin Day Message-ID: <20090922171918.GA86010@gta.com> References: <20090922123401.GB29391@gta.com> <20090922131034.GV47688@deviant.kiev.zoral.com.ua> <5078471e0909221003g43a125f4s99a1f841616bb184@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5078471e0909221003g43a125f4s99a1f841616bb184@mail.gmail.com> User-Agent: Mutt/1.4.2.3i Cc: freebsd-xen@freebsd.org Subject: Re: XEN 5.5.0 and clflush X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Sep 2009 17:19:20 -0000 > > I think I will have to disable CLFLUSH support for intel CPUs when > > self-snoop > > is not reported. > > > > > That's the kinda weird part about this though... It's not triggering an > Invalid Instruction, but a GPF. Looking at AMD's description of how CLFLUSH > is supposed to work, I don't see why it's faulting with what looks like a > valid address. > > While this is probably far outside the scope of what their entry-level > support techs will understand, I can try raising this as a bug with Citrix > under our support contract if you're confident that this is broken on Xen's > end. I keep wondering about comments having to do with AMD processor. The native processor is an an Intel Xeon. Is this piece of the puzzle important? Larry -- ------------------------------------------------------------------------ Larry Baird | http://www.gta.com Global Technology Associates, Inc. | Orlando, FL Email: lab@gta.com | TEL 407-380-0220, FAX 407-380-6080