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| author | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2013-02-27 12:47:53 -0500 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-03-12 13:40:55 -0500 |
| commit | 4549a8b7ee3c47155c09582f31086f7d0ba61fc4 (patch) | |
| tree | d538e99d507a004b8fcc10e1af38b78d10595190 /include | |
| parent | ab214c2960e3a6d2a86b1ff53e9ba2505d173f93 (diff) | |
Add a TPM Passthrough backend driver implementation
This patch is based of off version 9 of Stefan Berger's patch series
"QEMU Trusted Platform Module (TPM) integration"
and adds a new backend driver for it.
This patch adds a passthrough backend driver for passing commands sent to the
emulated TPM device directly to a TPM device opened on the host machine.
Thus it is possible to use a hardware TPM device in a system running on QEMU,
providing the ability to access a TPM in a special state (e.g. after a Trusted
Boot).
This functionality is being used in the acTvSM Trusted Virtualization Platform
which is available on [1].
Usage example:
qemu-system-x86_64 -tpmdev passthrough,id=tpm0,path=/dev/tpm0 \
-device tpm-tis,tpmdev=tpm0 \
-cdrom test.iso -boot d
Some notes about the host TPM:
The TPM needs to be enabled and activated. If that's not the case one
has to go through the BIOS/UEFI and enable and activate that TPM for TPM
commands to work as expected.
It may be necessary to boot the kernel using tpm_tis.force=1 in the boot
command line or 'modprobe tpm_tis force=1' in case of using it as a module.
Regards,
Andreas Niederl, Stefan Berger
[1] http://trustedjava.sourceforge.net/
Signed-off-by: Andreas Niederl <andreas.niederl@iaik.tugraz.at>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Corey Bryant <coreyb@linux.vnet.ibm.com>
Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com>
Message-id: 1361987275-26289-6-git-send-email-stefanb@linux.vnet.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qemu/sockets.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 6125bf7bdf..c5cee4bf2f 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -38,6 +38,7 @@ int socket_set_nodelay(int fd); void socket_set_block(int fd); void socket_set_nonblock(int fd); int send_all(int fd, const void *buf, int len1); +int recv_all(int fd, void *buf, int len1, bool single_read); /* callback function for nonblocking connect * valid fd on success, negative error code on failure |