Sep 12 – 14, 2022
Europe/Dublin timezone

Confidential Computing for RISC-V-based Platforms

Sep 13, 2022, 5:00 PM
"Meeting 1&2" (Clayton Hotel on Burlington Road)

"Meeting 1&2"

Clayton Hotel on Burlington Road

Real-time and Scheduling MC RISC-V MC




Confidential computing aims to protect data in use on computing platforms. Via confidential computing mechanisms, we aim to remove host software (OS/VMM, service VMs and firmware), other tenants (VMs), host software developers, operators and administrators of multi-tenant systems from the Trusted Computing Base (TCB) of tenant workloads. For RISC-V-based platforms, we propose an Application Platform-Trusted Execution Environment (AP-TEE) reference architecture and the ABI between host software and the TCB components on the platform (a TEE Security Manager aka TSM). The interfaces describes the use of the RISC-V Hypervisor extension to enforce confidentiality for virtualized workloads as well as the hardware changes that should be considered to enforce mitigations for a threat model. The proposal discusses the ABI proposed for TSM-Host/VMM interactions (TH-ABI) and TSM-Guest interactions (TG-ABI), and directions of hardware/ISA extensions. In addition to the proposed normative specifications, the proposal will document implementation-specific guidelines and relevant standard protocols for attestation to assist implementers of the AP-TEE confidential computing capability on RISC-V platforms.

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