RISC-V Design · All levels
PMP and Physical Memory Protection Domains: Design Space
Design Space for PMP and Physical Memory Protection Domains.
Design space
Design Space for PMP and Physical Memory Protection Domains is anchored on Unauthorized-access block rate, PMP rule evaluation latency, and coverage of privilege-domain isolation tests.. Convert observations into mechanism-backed decisions with explicit ownership.
Trade latency and throughput against power and area.
Prefer architecture options with clear software contract impact.
Quantify extension-profile cost before enabling by default.
Keep bring-up and validation ownership explicit.
Trend lens
diagram
BEFORE / AFTER TREND - PMP and Physical Memory Protection Domains
Unauthorized-access block rate, PMP rule evaluation latency, and coverage of privilege-domain isolation tests.
^
| 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.