From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: [Qemu-devel] KVM call minutes for Feb 8 Date: Thu, 10 Feb 2011 15:29:02 +0200 Message-ID: <20110210132902.GC24525@redhat.com> References: <4D52A86A.1030407@codemonkey.ws> <4D52F20A.7070009@codemonkey.ws> <4D539800.3070802@codemonkey.ws> <20110210090748.GD673@redhat.com> <4D53BD22.1040800@redhat.com> <20110210111354.GA21681@redhat.com> <4D53DF42.4030700@codemonkey.ws> <4D53E155.5000807@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Anthony Liguori , Chris Wright , kvm@vger.kernel.org, qemu-devel@nongnu.org, Markus Armbruster , Blue Swirl To: Avi Kivity Return-path: Received: from mx1.redhat.com ([209.132.183.28]:33316 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751162Ab1BJN3F (ORCPT ); Thu, 10 Feb 2011 08:29:05 -0500 Content-Disposition: inline In-Reply-To: <4D53E155.5000807@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Feb 10, 2011 at 03:00:05PM +0200, Avi Kivity wrote: > On 02/10/2011 02:51 PM, Anthony Liguori wrote: > >On 02/10/2011 12:13 PM, Gleb Natapov wrote: > >> > >>Which spec? Even in this discussion we completely mixed different > >>things. 440FX is not a chipset. > > > >Yes, it is. It's a single silicon package with a defined pinout. > >If you don't believe me, re-read the spec. > > > >It's a MCM with the PIIX3 being internally connected. The > >connection between the i440fx and PIIX3 happens to be PCI but > >that's not always the case. Sometimes it's a proprietary bus. > > Aren't they two distinct chips, together comprising the chip-set? > > One (the northbridge) converts the system bus to PCI + some extra > wires, the other (southbridge) bridges PCI to ISA and contains some > embedded ISA devices. IIRC there are some wires between them that > are not PCI. > Yeah, 440fx is probably northbridge and PIIX3 southbridge. -- Gleb. From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=52669 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PnWa8-0001by-NO for qemu-devel@nongnu.org; Thu, 10 Feb 2011 08:29:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PnWa1-0001ew-OA for qemu-devel@nongnu.org; Thu, 10 Feb 2011 08:29:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:52747) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PnWa1-0001eq-Fj for qemu-devel@nongnu.org; Thu, 10 Feb 2011 08:29:05 -0500 Date: Thu, 10 Feb 2011 15:29:02 +0200 From: Gleb Natapov Subject: Re: [Qemu-devel] KVM call minutes for Feb 8 Message-ID: <20110210132902.GC24525@redhat.com> References: <4D52A86A.1030407@codemonkey.ws> <4D52F20A.7070009@codemonkey.ws> <4D539800.3070802@codemonkey.ws> <20110210090748.GD673@redhat.com> <4D53BD22.1040800@redhat.com> <20110210111354.GA21681@redhat.com> <4D53DF42.4030700@codemonkey.ws> <4D53E155.5000807@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D53E155.5000807@redhat.com> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Chris Wright , kvm@vger.kernel.org, Markus Armbruster , qemu-devel@nongnu.org, Blue Swirl On Thu, Feb 10, 2011 at 03:00:05PM +0200, Avi Kivity wrote: > On 02/10/2011 02:51 PM, Anthony Liguori wrote: > >On 02/10/2011 12:13 PM, Gleb Natapov wrote: > >> > >>Which spec? Even in this discussion we completely mixed different > >>things. 440FX is not a chipset. > > > >Yes, it is. It's a single silicon package with a defined pinout. > >If you don't believe me, re-read the spec. > > > >It's a MCM with the PIIX3 being internally connected. The > >connection between the i440fx and PIIX3 happens to be PCI but > >that's not always the case. Sometimes it's a proprietary bus. > > Aren't they two distinct chips, together comprising the chip-set? > > One (the northbridge) converts the system bus to PCI + some extra > wires, the other (southbridge) bridges PCI to ISA and contains some > embedded ISA devices. IIRC there are some wires between them that > are not PCI. > Yeah, 440fx is probably northbridge and PIIX3 southbridge. -- Gleb.