Proposal: Supervisor Timer CSR and Virtual Supervisor Timer CSR

Siqi Zhao

Hi Everyone,


This is an updated version of our previous proposal on the clock source and clock event source. We have aligned our ideas with the latest hypervisor extension specs, removed the redundant parts, and uncovered some issues if we are going to implement this proposal with the current design. We give an analysis together with the proposed new CSRs in the attached document.


BTW, we have learned recently that there is an on-going work on an improved version of the PLIC which is virtualization-aware, is there any documents available?




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