In a virtual environment, an application running in guest VM may want
to delegate security sensitive tasks to a Trusted Application (TA)
running within a Trusted Execution Environment (TEE). A TEE is a trusted
OS running in some secure environment, for example, TrustZone on ARM
CPUs, or a separate secure co-processor etc.
A virtual TEE device emulates a TEE within a guest VM. Such a virtual
TEE device supports multiple operations such as:
VIRTIO_TEE_CMD_OPEN_DEVICE – Open a communication channel with virtio
TEE device.
VIRTIO_TEE_CMD_CLOSE_DEVICE – Close communication channel with virtio
TEE device.
VIRTIO_TEE_CMD_GET_VERSION – Get version of virtio TEE.
VIRTIO_TEE_CMD_OPEN_SESSION – Open a session to communicate with
trusted application running in TEE.
VIRTIO_TEE_CMD_CLOSE_SESSION – Close a session to end communication
with trusted application running in TEE.
VIRTIO_TEE_CMD_INVOKE_FUNC – Invoke a command or function in trusted
application running in TEE.
VIRTIO_TEE_CMD_CANCEL_REQ – Cancel an ongoing command within TEE.
VIRTIO_TEE_CMD_REGISTER_MEM - Register shared memory with TEE.
VIRTIO_TEE_CMD_UNREGISTER_MEM - Unregister shared memory from TEE.
We would like to reserve device ID 46 for Virtio-TEE device.
Signed-off-by: Jeshwanth Kumar <
jeshwanthkumar.nk@amd.com>
Reviewed-by: Rijo Thomas <
Rijo-john.Thomas@amd.com>
Reviewed-by: Parav Pandit <
parav@nvidia.com>
Acked-by: Sumit Garg <
sumit.garg@linaro.org>
---
content.tex | 2 ++
1 file changed, 2 insertions(+)
diff --git a/content.tex b/content.tex
index 0a62dce..644aa4a 100644
--- a/content.tex
+++ b/content.tex
@@ -739,6 +739,8 @@ \chapter{Device Types}\label{sec:Device Types}
\hline
45 & SPI master \\
\hline
+46 & TEE device \\
+\hline
\end{tabular}
Some of the devices above are unspecified by this document,
--
2.25.1