• Jarkko Sakkinen's avatar
    tpm: infrastructure for TPM spaces · 745b361e
    Jarkko Sakkinen authored
    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: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
    Tested-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
    Reviewed-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
    745b361e
Makefile 887 Bytes