Hardware virtualization support

jbush001 / NyuziProcessor

GPGPU microprocessor architecture

Apache License 2.0

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Hardware virtualization support #89

Open jbush001 opened 7 years ago

jbush001 commented 7 years ago

Instruction set is designed to support classic virtualization, but performance could be improved by adding some instruction set features. This needs a design, but here are a few high level ideas:

System level bit that enables hypervisor access. In this mode, supervisor instructions will trap into hypervisor.
Hypervisor mode bit that disables MMU and enables access to privileged instructions.
Add hidden virtual machine ID bits that extend ASID.

jbush001 commented 6 years ago

It would probably be useful to build an implementation of "classic" virtualization first to measure performance differences.