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Subject: Re: [PATCH v3] virtio-tee: Reserve device ID 46 for TEE device
Fixes: https://github.com/oasis-tcs/virtio-spec/issues/175 Request for votes. Regards, Jeshwanth On 28-Sep-23 11:42 AM, jeshwank wrote:
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 â Open a communication channel with virtio TEE device. VIRTIO_TEE_CMD_CLOSE_DEVICE â Close communication channel with virtio TEE device. VIRTIO_TEE_CMD_GET_VERSION â Get version of virtio TEE. VIRTIO_TEE_CMD_OPEN_SESSION â Open a session to communicate with trusted application running in TEE. VIRTIO_TEE_CMD_CLOSE_SESSION â Close a session to end communication with trusted application running in TEE. VIRTIO_TEE_CMD_INVOKE_FUNC â Invoke a command or function in trusted application running in TEE. VIRTIO_TEE_CMD_CANCEL_REQ â 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,
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