Re: [tboot-devel] SINIT versions and compatibility

[Cihula, J. <jos...@in...>]

As one of the authors of said change, I can tell you that minimizing
future compatibility issues was exactly why we made the changes we did.

When we added the MONITOR method of AP wakeup we realized that the
existing data structures had no way to accommodate this type of change,
such that the MLE and SINIT could mutually discover any
incompatibilities and "negotiate" which method to use.

Because this change was going to break backward compatibility anyway, we
decided to make whatever other necessary changes were required to allow
such discovery and negotiation for future features.  So if developers
follow the guidelines in the MLE Software Devel. Manual, hopefully they
will not need to make large changes again.  So while there may be
additional updates to SINIT, we do not foresee changing the interface
further.

Joe

> -----Original Message-----
> From: Jonathan M. McCune [mailto:jon...@cm...]
> Sent: Thursday, October 02, 2008 8:49 AM
> 
> Hello list,
> 
> The most recent release of tboot introduced some fairly large changes
> in numerous data structures, and requires the new SINIT modules.  As
> somebody who is developing another project leveraging SENTER, I need
to
> port my code forward to use these new modules.  Given the complexity
of
> all of this, I lean heavily on tboot to show me the way.
> 
> How stable can I consider the current (v16?) SINIT modules and their
> interface?  I want my implementation to be usable on commodity
> machines, so it looks like I need to go to at least v16.  Can anyone
offer any
> tips on minimizing pain when a new SINIT module is released?
> 
> Thanks,
> -Jon
> 
>
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