Re: [PATCH v2 4/7] tpm: infrastructure for TPM spaces

[James Bottomley <James.Bottomley@HansenPartnership.com>]

On Thu, 2017-02-16 at 21:25 +0200, Jarkko Sakkinen wrote:
> Added an ability to virtualize TPM commands into an isolated context
> that we call a TPM space because the word context is already heavily
> used in the TPM specification. Both the handle areas and bodies
> (where
> necessary) are virtualized.
> 
> The mechanism works by adding a new parameter struct tpm_space to the
> tpm_transmit() function. This new structure contains the list of
> virtual
> handles and a buffer of page size (currently) for backing storage.
> 
> When tpm_transmit() is called with a struct tpm_space instance it
> will
> execute the following sequence:
> 
> 1. Take locks.
> 2. Load transient objects from the backing storage by using
> ContextLoad
>    and map virtual handles to physical handles.
> 3. Perform the transaction.
> 4. Save transient objects to backing storage by using ContextSave and
>    map resulting physical handle to virtual handle if there is such.
> 
> This commit does not implement virtualization support for hmac and
> policy sessions.
> 
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

For patches 1-4 you can add 

Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>

Just re-running a build with the latest kernel for my laptop to add
tested by.

James