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Re: [Xen-devel] any plans to sopport virtio-serial ?

To: Vasiliy G Tolstov <v.tolstov@xxxxxxxxx>
Subject: Re: [Xen-devel] any plans to sopport virtio-serial ?
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Tue, 23 Nov 2010 15:07:03 +0000
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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On Tue, 23 Nov 2010, Vasiliy G Tolstov wrote:
> On Tue, 2010-11-23 at 12:19 +0000, Stefano Stabellini wrote:
> > On Tue, 23 Nov 2010, Vasiliy G Tolstov wrote:
> > > Hello. Does Xen developers have any plans to support qemu virtio-serial
> > > or may be some ideas to implement some analog?
> > > 
> > > If no, can You provide my some tech info, what i need to write this?
> > > (xenstore not good for two way communication and have scalability
> > > problems, for example like tdb suport transactions..) Xway not
> > > supporting, XenSocket use another protocol and need to rewrite programs
> > > to support it..
> >  
> > You can try to make the current virtio-serial backend in Qemu work on
> > Xen, that shouldn't be difficult, but it would only work with HVM
> > guests.
> > 
> > Otherwise you can try to use a Xen PV serial for your purposes: multiple
> > PV serials don't work out of the box, but I have tested them a little
> > while ago and they do work fine.
> > You need to hack xl to create multiple PV serials frontend/backend pairs
> > (see init_console_info in tools/libxl/xl_cmdimpl.c), then you need these
> > two patches in the guest kernel (unfortunately they are not yet
> > upstream):
> > 
> > - hvc_xen: support PV on HVM consoles
> > e76b17aae62d13cebd4cc33415b4f0cc72316345
> > 
> > - hvc_xen: implement multiconsole support
> > d6edaed101e089b80257bcbb3141308a97ea489e
> > 
> > look at this branch:
> > 
> > git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 2.6.36-rc6-pvhvm-v8
> 
> I'm clone this repo, but can't find sha commits like
> e76b17aae62d13cebd4cc33415b4f0cc72316345 or
> d6edaed101e089b80257bcbb3141308a97ea489e
 
If you checkout the branch named 2.6.36-rc6-pvhvm-v8, the two commits in
question are the last two...

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