RISC-V ISA Explorer · Memory & Addressing

Sv39: Virtual Memory, 39-bit VA

Ratified 2019-05 · version 1.0

Three-level page tables give RV64 harts a 39-bit virtual address space, the usual choice for Linux.

Typical use: Paged virtual memory with a 512 GB address space

Specification

Dependencies

Requires

• S

Required by

• Sv48
• Svnapot
• Svrsw60t59b
• Svukte

Instructions

No instruction encodings are listed for this extension in the catalogue.