RISC-V ISA Explorer · Memory & Addressing
Smepmp: Enhanced PMP
Ratified 2021-12 · version 1.0.0
Machine-mode access and execution prevention built on PMP, so firmware cannot reach untrusted memory by default.
Typical use: More flexible PMP rules
Open Smepmp in the explorerInstructions
No instruction encodings are listed for this extension in the catalogue.
Control and status registers (2)
| Name | Address | Mode | Description |
|---|---|---|---|
mseccfg | 0x747 | M | Machine Security Configuration |
mseccfgh | 0x757 | M | Most significant 32 bits of Machine Security Configuration |