Re: [Xen-devel] How to use the vTPM backend driver in the pv-ops kernel

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Dec 28, 2012 at 09:47:22AM -0500, Fioravante, Matthew E. wrote:
> No, the vtpm manager is implemented in mini-os and mini-os not has a driver 
> for direct access to the physical tpm.
> dom0 no longer takes any part of the vtpm communication paths.
>

Ok. that's nice. Thanks for the info :)

-- Pasi

> ________________________________________
> From: Pasi Kärkkäinen [pasik@xxxxxx]
> Sent: Thursday, December 27, 2012 12:03 PM
> To: Fioravante, Matthew E.
> Cc: gavin; xen-users@xxxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] How to use the vTPM backend driver in the pv-ops 
> kernel
> 
> On Thu, Dec 27, 2012 at 10:27:33AM -0500, Fioravante, Matthew E. wrote:
> > The frontend driver is currently being ported to the latest kernel. You can
> > find the patch cross listed here as well as the linux kernel mailing list.
> >
> > I have no plans to port the backend driver. If you need it you'll have to 
> > get it from the 2.6.18
> > kernel and port it yourself.
> >
> 
> Hmm.. are you still using 2.6.18 kernel in dom0 yourself?
> 
> -- Pasi
> 
> > ________________________________________
> > From: xen-devel-bounces@xxxxxxxxxxxxx [xen-devel-bounces@xxxxxxxxxxxxx] On 
> > Behalf Of gavin [gbtux@xxxxxxx]
> > Sent: Sunday, December 23, 2012 8:04 AM
> > To: Pasi Kärkkäinen
> > Cc: xen-users@xxxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxx
> > Subject: Re: [Xen-devel] How to use the vTPM backend driver in the pv-ops 
> > kernel
> >
> > Hi Pasi,
> >
> > Thank you very much for your information.
> >
> > Best Regards,
> > Gavin
> >
> > At 2012-12-23 06:04:08,"Pasi Kärkkäinen" <pasik@xxxxxx> wrote:
> >
> > >On Sun, Dec 23, 2012 at 01:50:16AM +0800, gavin wrote:
> > >>     Hi,
> > >>
> > >>    I cannot find the vTPM config option CONFIG_XEN_TPMDEV_BACKEND in the
> > >>    config file of pv-ops kernel, such as kernel 2.6.32.50. However, this
> > >>    option exists in the config file of kernel version 2.6.18.8. I also 
> > >> cannot
> > >>    find the vTPM backed driver (such as
> > >>    linux-2.6.18-xen.hg/drivers/xen/tpmback ) in the pv-ops kernel.
> > >>    So, how can I configure and use the vTPM backend driver in kernel 
> > >> 2.6.32?
> > >>    Thank you for any advice.
> > >>
> > >
> > >I don't think vtpm drivers were ported to 2.6.32 pvops.
> > >Recently there has been work on porting the drivers to upstream Linux 3.x,
> > >but they aren't merged yet iirc.
> > >
> > >If you need to use them with 2.6.32 you need to port them yourself..
> > >
> > >-- Pasi
> > >
> >
> >
> >

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