[LTP] [PATCH v3 0/4] TPM 2.0 fixes in IMA tests

Jarkko Sakkinen jarkko.sakkinen@linux.intel.com
Thu Oct 1 20:31:38 CEST 2020


On Thu, Oct 01, 2020 at 02:01:25PM +0200, Petr Vorel wrote:
> I'll need to keep these hacks for older kernels, but it's great that there is a
> better solution.
> 
> Other thing: do you know anybody practically uses more TPM devices in single
> machine? I'm asking that I work with tpm0 in ima_tpm.sh, but maybe I should
> allow user to redefine it to choose different device (or even run tests for all
> available devices).

You can create a proxy TPM device for a TPM emulator or a software TPM
(e.g. could be an SGX enclave) by using ioctl interface /dev/vtpmx,
provided by tpm_vtpm_proxy driver. QEMU provides a passthrough interface
from TPM devices to the VM, which can be utilized for this.

This one I know at least.

> Kind regards,
> Petr

/Jarkko


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