Hypervisor Extensions — STIMSMITH

Hypervisor Extensions

Concept

Hypervisor extensions are identified in the evidence as a critical RISC-V privilege-specification area that requires explicit verification attention. In RISC-V verification flows, constrained-random generation with STING can stress hypervisor extensions, while hybrid random-and-directed methodologies help close coverage gaps across privilege, memory-protection, MMU, and related features.

First seen 5/26/2026

Last seen 5/26/2026

Evidence 2 chunks

Wiki v1

WIKI

Overview

Hypervisor extensions are discussed in the context of RISC-V processor verification as part of the set of critical privilege-related features that verification teams need to cover. The evidence identifies hypervisor extensions alongside MMU, PMP, and vector extensions as important areas for future-ready RISC-V compliance and validation flows. [citation: hypervisor-extensions-critical-privilege-area]

Verification relevance

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NEIGHBORHOOD

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RELATIONSHIPS

2 connections

RISC-V ISA part of → 93% 2e

Hypervisor extensions are an optional part of the modular RISC-V ISA.

STING ← evaluates 93% 1e

STING is particularly effective at stressing hypervisor extensions.

LINKED ENTITIES

5 links

RISC-V verification_context_for The evidence frames hypervisor extensions within RISC-V processor verification and RISC-V privilege specifications.

STING stresses The evidence states that STING is particularly effective at stressing privilege levels, memory protection, CSRs, and hypervisor extensions.

ImperasTS complements_random_testing_for_coverage_closure The evidence describes ImperasTS directed suites as complementary to STING, with STING used for discovery and ImperasTS for targeted closure.

PMP co_listed_critical_privilege_specification The evidence lists PMP together with MMU, hypervisor, and vector extensions as critical privilege specifications covered by the verification flow.

MMU co_listed_critical_privilege_specification The evidence lists MMU together with PMP, hypervisor, and vector extensions as critical privilege specifications covered by the verification flow.

CITATIONS

7 sources

7 citations — click to expand

[1] hypervisor-extensions-critical-privilege-area source

[2] risc-v-modularity-adds-verification-complexity source

[3] sting-stresses-hypervisor-extensions source

[4] hybrid-random-directed-needed source

[5] random-alone-misses-privilege-features source

[6] sting-portable-self-checking-programs source

[7] sting-imperasts-complementary-flow source