Re: [Qemu-devel] [PATCH 0/2] TPM NVRAM persistent storage

[Eric Blake]

On 06/04/2013 12:18 PM, Corey Bryant wrote:
> This patch series provides persistent storage support that a TPM
> can use to store NVRAM data.  It uses QEMU's block driver to store
> data on a drive image.  The libtpms TPM 1.2 backend will be the
> initial user of this functionality to store data that must persist
> through a reboot or migration.  A sample command line may look like
> this:
> 
> qemu-system-x86_64 ...
> -drive file=/path/to/nvram.qcow2,id=drive-nvram0-0-0
> -tpmdev libtpms,id=tpm-tpm0
> -device tpm-tis,tpmdev=tpm-tpm0,id=tpm0,drive=drive-nvram0-0-0

Is a TPM device hot-pluggable?  If so, do you have a design for the QMP
counterpart in mind?

> 
> Thanks,
> Corey
> 
> Corey Bryant (2):
>   nvram: Add TPM NVRAM implementation
>   nvram: Add tpm-tis drive support
> 
>  hw/tpm/Makefile.objs |    1 +
>  hw/tpm/tpm_int.h     |    2 +
>  hw/tpm/tpm_nvram.c   |  399 
> ++++++++++++++++++++++++++++++++++++++++++++++++++
>  hw/tpm/tpm_nvram.h   |   25 +++
>  hw/tpm/tpm_tis.c     |    8 +
>  5 files changed, 435 insertions(+), 0 deletions(-)
>  create mode 100644 hw/tpm/tpm_nvram.c
>  create mode 100644 hw/tpm/tpm_nvram.h
> 
> 
> 
> 

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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