From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758211AbZIOV15 (ORCPT ); Tue, 15 Sep 2009 17:27:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754210AbZIOV1x (ORCPT ); Tue, 15 Sep 2009 17:27:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50455 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751790AbZIOV1w (ORCPT ); Tue, 15 Sep 2009 17:27:52 -0400 Date: Wed, 16 Sep 2009 00:25:45 +0300 From: "Michael S. Tsirkin" To: Gregory Haskins Cc: Avi Kivity , "Ira W. Snyder" , netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@elte.hu, linux-mm@kvack.org, akpm@linux-foundation.org, hpa@zytor.com, Rusty Russell , s.hetze@linux-ag.com, alacrityvm-devel@lists.sourceforge.net Subject: Re: [PATCHv5 3/3] vhost_net: a kernel-level virtio server Message-ID: <20090915212545.GC27954@redhat.com> References: <20090914164750.GB3745@redhat.com> <4AAE961B.6020509@gmail.com> <4AAF8A03.5020806@redhat.com> <4AAF909F.9080306@gmail.com> <4AAF95D1.1080600@redhat.com> <4AAF9BAF.3030109@gmail.com> <4AAFACB5.9050808@redhat.com> <4AAFF437.7060100@gmail.com> <20090915204036.GA27954@redhat.com> <4AAFFC8E.9010404@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4AAFFC8E.9010404@gmail.com> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 15, 2009 at 04:43:58PM -0400, Gregory Haskins wrote: > Michael S. Tsirkin wrote: > > On Tue, Sep 15, 2009 at 04:08:23PM -0400, Gregory Haskins wrote: > >> No, what I mean is how do you surface multiple ethernet and consoles to > >> the guests? For Ira's case, I think he needs at minimum at least one of > >> each, and he mentioned possibly having two unique ethernets at one point. > >> > >> His slave boards surface themselves as PCI devices to the x86 > >> host. So how do you use that to make multiple vhost-based devices (say > >> two virtio-nets, and a virtio-console) communicate across the transport? > >> > >> There are multiple ways to do this, but what I am saying is that > >> whatever is conceived will start to look eerily like a vbus-connector, > >> since this is one of its primary purposes ;) > > > > Can't all this be in userspace? > > Can you outline your proposal? > > -Greg > Userspace in x86 maps a PCI region, uses it for communication with ppc? From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCHv5 3/3] vhost_net: a kernel-level virtio server Date: Wed, 16 Sep 2009 00:25:45 +0300 Message-ID: <20090915212545.GC27954@redhat.com> References: <20090914164750.GB3745@redhat.com> <4AAE961B.6020509@gmail.com> <4AAF8A03.5020806@redhat.com> <4AAF909F.9080306@gmail.com> <4AAF95D1.1080600@redhat.com> <4AAF9BAF.3030109@gmail.com> <4AAFACB5.9050808@redhat.com> <4AAFF437.7060100@gmail.com> <20090915204036.GA27954@redhat.com> <4AAFFC8E.9010404@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Avi Kivity , "Ira W. Snyder" , netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@elte.hu, linux-mm@kvack.org, akpm@linux-foundation.org, hpa@zytor.com, Rusty Russell , s.hetze@linux-ag.com, alacrityvm-devel@lists.sourceforge.net To: Gregory Haskins Return-path: Content-Disposition: inline In-Reply-To: <4AAFFC8E.9010404@gmail.com> Sender: owner-linux-mm@kvack.org List-Id: netdev.vger.kernel.org On Tue, Sep 15, 2009 at 04:43:58PM -0400, Gregory Haskins wrote: > Michael S. Tsirkin wrote: > > On Tue, Sep 15, 2009 at 04:08:23PM -0400, Gregory Haskins wrote: > >> No, what I mean is how do you surface multiple ethernet and consoles to > >> the guests? For Ira's case, I think he needs at minimum at least one of > >> each, and he mentioned possibly having two unique ethernets at one point. > >> > >> His slave boards surface themselves as PCI devices to the x86 > >> host. So how do you use that to make multiple vhost-based devices (say > >> two virtio-nets, and a virtio-console) communicate across the transport? > >> > >> There are multiple ways to do this, but what I am saying is that > >> whatever is conceived will start to look eerily like a vbus-connector, > >> since this is one of its primary purposes ;) > > > > Can't all this be in userspace? > > Can you outline your proposal? > > -Greg > Userspace in x86 maps a PCI region, uses it for communication with ppc? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org