Re: [libvirt] vTPM support in libvirt

I agree on ignoring "backend" for now. The "instance" parameter defines a vTPM ID associated to that domain. There's a file "vtpm.db" which lists all mappings between domain UUID and vTPM ID, which means as long as you set a UUID for each of your domains, the correct vTPM is selected automatically (this is important for loading the last vTPM state). Can you please give me a short introduction on how to add this feature to libvirt? I know how to check out the code and how to change the domain RelaxNG schema, but where do I need to change the source code? Oh, and how do I need to configure it in order to install it on a machine (I guess "./configure --prefix=???" is important?!). Best regards Andreas Daniel P. Berrange wrote: > On Thu, Jun 25, 2009 at 09:16:26AM +0100, Andreas Sommer wrote: > >> I'm wondering if there will be vTPM support in libvirt in the near >> future?! Xen does support it already with the configuration "vtpm = >> ['instance=1,backend=0']", for example. >> >> So it would be great if the libvirt XML format supported it, too... >> For example like this: >> >> <devices> >> <vtpm instance="1" backend="xxx" /> >> </devices> >> >> Both attributes are optional. The backend attribute is a VM ID (on >> Xen, only zero for dom0 is supported) and could be implemented as a >> UUID?! >> > > I'd just ignore 'backend' for now - none of the other existing devices > suport anything other than dom0 as the backend, so its no loss to assume > dom0 for TPM too. > > What is 'instance' ? > > For element I'd prefer to just call it '<tpm>' - the 'v' is redundant > since every device is virtual here :-) > > >> What do you think? Are there any efforts to introducing that? >> > > No one has ever asked for it before, which is why we've not supported > this to date. I don't have any objection to supporting it, so patches > would be welcomed. > > Regards, > Daniel > -- Libvir-list mailing list Libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list