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riscv-non-isa / riscv-ap-tee-io

This TG will define AP-TEE-IO ABI extensions to provide Confidential VM-assigned devices with secure direct access to confidential memory as well as MMIO, removing the dependence on para-virtualized I/O.
https://jira.riscv.org/browse/RVG-144
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[Qualcomm feedback] Chapter 6. Architectural Overview - confidential memory #79

Closed jyao1 closed 7 months ago

jyao1 commented 8 months ago

Reference: https://lists.riscv.org/g/tech-ap-tee-io/topic/103498833#47

With the CoVE-IO ABIs and flows, TDIs can access TVM confidential memory directly

only allowed subset of TVM confidential memory, not all

jyao1 commented 8 months ago

It is based upon IOMMU configuration.