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Explore the evolution of the Linux kernel's Trusted Execution Environment (TEE) subsystem in this 48-minute conference talk from the Linux Foundation. Learn about TEE as an isolated execution environment that runs alongside rich operating systems, providing capabilities to isolate security-critical code and resources through hardware security features like Arm TrustZone, AMD Secure Processor, and RISC-V TEE. Discover ongoing developments in the kernel TEE subsystem including support for emerging drivers such as Trusted Services TEE and Qualcomm TEE. Examine how the recently merged RPMB subsystem facilitates easier enablement of OP-TEE based fTPM in-kernel use cases. Investigate the upcoming restricted DMA-Bufs feature managed by TEE and its potential real-world upstream applications including DRM protected media pipelines, TEE protected crypto accelerator keys, and secure user interfaces.
