[Qemu-devel] TPM does not seem to work under QEMU with TPM patches

[Jordi Cucurull Juan <jordi.cucurull@scytl.com>]

Dear all,

I am testing the TPM patches of Stefan Berger to provide TPM support to 
QEMU. Nevertheless I have not managed to run them successfully. During 
the compilation of QEMU with his patches (V18 for revision 563987d) I 
have not had any issue. But, I have a virtual machine based on CentOS 
6.2 and the TPM does not seem to be present. I run the machine with the 
following command line (as a root user):

# /usr/local/bin/qemu-system-x86_64 -hda qemu-disk-centos.img -m 1024 
-boot d -enable-kvm -usbdevice tablet -k es -tpmdev 
passthrough,id=tpm0,path=/dev/tpm0 -device tpm-tis,tpmdev=tpm0

My real machine has an Infineon TPM v1.2. When I try to load the TSS 
library (Trousers) inside the client machine (the CentOS 6.2) it throws 
the following error:

insmod: error inserting 
'/lib/modules/2.6.32-279.5.1.el6.x86_64/kernel/drivers/char/tpm/tpm_atmel.ko': 
-1 no such device

Apart from this, QEMU does not throw any error. Should I enable 
something else to have access to the TPM? In addition, I do not see any 
/dev/vtpm0 device in my real machine.


Best regards,
Jordi.


-- 
Jordi Cucurull Juan
Researcher
Scytl Secure Electronic Voting
Plaça Gal·la Placidia, 1-3, 1st floor · 08006 Barcelona
Phone:     + 34 934 230 324
Fax        + 34 933 251 028
jordi.cucurull@scytl.com
http://www.scytl.com

NOTICE: The information in this e-mail and in any of its attachments is confidential and intended solely for the attention and use of the named addressee(s). If you are not the intended recipient, any disclosure, copying, distribution or retaining of this message or any part of it, without the prior written consent of Scytl Secure Electronic Voting, SA is prohibited and may be unlawful. If you have received this in error, please contact the sender and delete the material from any computer.

Your data are in a file owned by Scytl Secure Electronic Voting, S.A. You can exercice your rights of access, rectification, cancellation and opposition by contacting Scytl Secure Electronic Voting, S.A. at the following address: Gal·la Placídia, 1-3. 1st, 08006 Barcelona (Spain), according to the Organic Law 15/1999, of 13th December of Protection of Personal Data.