RISC-V Design · All levels

MMU, TLB Hierarchy, and Hardware Page-Table Walk: Inputs and Outputs

Inputs and Outputs for MMU, TLB Hierarchy, and Hardware Page-Table Walk.

Inputs and outputs contract

Inputs and Outputs for MMU, TLB Hierarchy, and Hardware Page-Table Walk is anchored on TLB hit rate by level, average page-walk latency, and added cycles per memory access under representative workloads.. Convert observations into mechanism-backed decisions with explicit ownership.

diagram

INPUTS
  - workload definition and target KPI
  - architecture profile and enabled extensions
  - compiler/runtime/firmware metadata
  - correctness and security gates

OUTPUTS
  - evidence-backed bottleneck class
  - owner-signed mitigation plan
  - validation matrix with rollback thresholds

Ownership split

diagram

RISC-V OWNERSHIP LAYERS - MMU, TLB Hierarchy, and Hardware Page-Table Walk

layer                  owner                         closure artifact
--------------------   ----------------------------  -----------------------------
ISA compliance         architecture/spec team        unpriv + priv test evidence
decode/control         front-end RTL owner           decode matrix + assertions
pipeline timing        microarchitecture owner       hazard/perf regression trends
memory + MMU           LSU/MMU owner                 TLB/pagewalk trace checks
privilege/CSR path     firmware + kernel interface   trap/interrupt conformance
vector subsystem       vector RTL + compiler owner   lane-utilization profiles

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