From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: Re: 9p file system for xen Date: Wed, 18 Nov 2015 09:56:27 +0000 Message-ID: <20151118095627.GJ1495@citrix.com> References: <56461C8A.4080401@jma3.com> <20151116151658.GA22829@citrix.com> <564A0608.8050904@jma3.com> <20151116165129.GA25764@citrix.com> <564A10E1.4070607@jma3.com> <20151116173559.GC25764@citrix.com> <564A98CB.9090506@jma3.com> <564B8505.3060302@jma3.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <564B8505.3060302@jma3.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Linda Cc: Julien Grall , Neil Sikka , Wei Liu , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On Tue, Nov 17, 2015 at 12:50:29PM -0700, Linda wrote: > > > On 11/17/2015 11:35 AM, Neil Sikka wrote: > >How does Linda's work relate to Wei's patches available here (I didnt see > >them in Xen-4.6.0): > > > >http://downloads.xen.org/Wiki/VirtioOnXen/qemu-01-xenpv-exec.patch > >http://downloads.xen.org/Wiki/VirtioOnXen/qemu-02-virtio-for-pv.patch > I'll let Wei answer this. That wasn't upstreamed at all. Admittedly that was done when I didn't know much about Xen. I would have done that project differently nowadays. And to clarify things: virtio on Xen is a different project than 9pfs on Xen. 9pfs is not tied to virtio in any way. Just that there is currently only virtio-9pfs available. So to make 9pfs work on Xen, there are at least two ways. One is to make virtio work on Xen so that we subsequently get virtio-9pfs (along with all other virtio devices); the other is to implement xen-9pfs (I made up this name). I'm not sure whether you're interested in virtio on Xen or just 9pfs. > > > >Also, since 9p is being worked on, which is a filesystem that should be > >implemented in a kernel rather than a hypervisor, are you looking to > >contribute this driver to the Linux kernel? > What I did was write new kernel routines and new Qemu routines, as well as I think Neil was talking about the "new kernel routines". Yes, that would need to be upstreamed eventually. Wei. > modifying a few existing Qemu files. The initialization is currently done > manually by modifying xenstore. This is the only code that properly belongs > in the hypervisor. > > I hope this clarifies things. > > Linda