RISC-V Design · All levels
Virtual Memory with Sv39/Sv48, TLB Behavior, and Page-Walk Semantics: Silicon PPA Impact
Silicon PPA Impact for Virtual Memory with Sv39/Sv48, TLB Behavior, and Page-Walk Semantics.
Silicon PPA impact
Silicon PPA Impact for Virtual Memory with Sv39/Sv48, TLB Behavior, and Page-Walk Semantics is anchored on TLB miss rate, page-walk latency distribution, and stale-translation incidents after mapping changes.. Convert observations into mechanism-backed decisions with explicit ownership.
Frequency gains that increase bubbles may lose net throughput.
Area growth from extension logic must justify workload value.
Power and thermal stability are release gates, not secondary metrics.
PPA trend view
diagram
BEFORE / AFTER TREND - Virtual Memory with Sv39/Sv48, TLB Behavior, and Page-Walk Semantics
TLB miss rate, page-walk latency distribution, and stale-translation incidents after mapping changes.
^
| o target band
| o after fix + reruns
| o
| o baseline (failing)
+--------------------------------------------------> iteration
capture issue isolate mechanism close + monitor
Use this view to confirm the gain is causal and stable across seeds.