Re: [Xen-devel] vTPM on HVM Xen 3.1.2

[Kuniyasu Suzaki <k.suzaki@xxxxxxxxxx>]

Hello,

I succeeded in using vTPM (TPM Emulator) on HVM Xen (unstable xen 3.2.0 rc2).
I can confirm the working of the IMA-Linux kernel on vTPM.
# I wanted to use vTPM on HVM Xen(STABLE 3.1.2) but it didn't work well.
## Special thanks to yasaki@fujitsu. The sucess is owed a lot to him.

However the TCG-BIOS has NOT worked well. I enabled "BX_TCGBIOS" for
"rombios.c" but there was NOT a log in "/sys/kernel/security/tpm0/".

Please tell me how to enable TCG-BIOS.

I wonder the version of GCC (4.2.3) is correct for the compile, because
the treatment of NULL and 0 looks to be changed.

Our test environment and the change of options are follows.

----------------------------------------------------------------
# Test Enviroment
 - Debian lenny
 - gcc   gcc version 4.2.3 20071123 (prerelease) (Debian 4.2.2-4)
 - libc  libc6 2.7-3
 - Xen unstable xen 3.2.0 rc2

# Change of options
 - Config.mk
    VTPM_TOOLS was enalbed (y)
 - tools/vtpm_manager/Rules.mk
    DUMMY_TPM was enabled
 - tools/firmware/rombios/rombios.c
    BX_TCGBIOS was enabled (1)
 - tools/ioemu/hw/tpm_tis.c
    DEBUG_TPM was defined
 - tools/vtpm/vtpm/tpm/tpm_emulator.h
    TPM_STRONG_PERSISTENCE was defined
----------------------------------------------------------------
------
suzaki


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