Re: [libvirt] vTPM support in libvirt

Hi again, I found out that the important files for the patch will be - domain_conf.c - util.h - domain_conf.h - xm_internal.c Guess I could figure out how to code it, but I still need to know how to install libvirt from sources. There's no documentation about it...

Andreas Sommer wrote: > 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 > -- Libvir-list mailing list Libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list