RISC-V Design ยท All levels
Privilege Levels, Execution Modes, and Delegation Boundaries: Reports and Metrics
Reports and Metrics for Privilege Levels, Execution Modes, and Delegation Boundaries.
Reports and metrics
Reports and Metrics for Privilege Levels, Execution Modes, and Delegation Boundaries is anchored on Privilege-transition latency and number of unauthorized accesses blocked by PMP/page-permission checks per billion instructions.. Convert observations into mechanism-backed decisions with explicit ownership.
Before/after trend
BEFORE / AFTER TREND - Privilege Levels, Execution Modes, and Delegation Boundaries
Privilege-transition latency and number of unauthorized accesses blocked by PMP/page-permission checks per billion instructions.
^
| 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.Root-cause tree
ROOT CAUSE TREE - Privilege Levels, Execution Modes, and Delegation Boundaries
Privilege-transition latency and number of unauthorized accesses blocked by PMP/page-permission checks per billion instructions. regressed
|
reproducible on fixed seed?
/ \
no yes
| |
env/tool drift first failing domain?
/ | \
decode execute memory/MMU
| | |
control map bypass/FU TLB/walk/perm
|
privilege/CSR side effects checked?
Stop at first confirmed mechanism, then assign explicit owner + fix proof.Track Privilege-transition latency and number of unauthorized accesses blocked by PMP/page-permission checks per billion instructions. on representative workloads, not just microbenchmarks.
Include build/runtime/privilege metadata in report headers.
Pair performance movement with correctness and reliability checks.
Report tail stability, not only mean uplift.