RVA23 Profile

Owned by Anup Patel
Last updated: Oct 29, 2024
2 min read

About

The RVA23 profiles are intended to be used for 64-bit application processors that will run rich OS stacks from standard binary OS distributions and with a substantial number of third-party binary user applications that will be supported over a considerable length of time in the field. The approach is to provide a large guaranteed set of features that can safely be exploited by third-party developers to ship binaries that will provide a better experience across a large number of alternative implementations over time. It is explicitly a non-goal of RVA23 to allow more hardware implementation flexibility by supporting only a minimal set of features.

Only user-mode (RVA23U64) and supervisor-mode (RVA23S64) profiles are specified in this family.

Refer, https://github.com/riscv/riscv-profiles/releases/download/rva23-rvb23-v0.7-ratification-vote/rva23-profile-ratification-vote-20241007.pdf

Status

Profile Ext. Name

Supervisor Detection

Kernel HWPROBE

KVM ONE_REG

Kernel Version

KVM Version

Comments

Profile Ext. Name

Supervisor Detection

Kernel HWPROBE

KVM ONE_REG

Kernel Version

KVM Version

Comments

RVA22U64 Mandatory

M

ISA String

COMPLETED

COMPLETED

Linux-5.x

Linux-5.x

 

A

ISA String

COMPLETED

COMPLETED

Linux-5.x

Linux-5.x

 

F

ISA String

COMPLETED

COMPLETED

Linux-5.x

Linux-5.x

 

D

ISA String

COMPLETED

COMPLETED

Linux-5.x

Linux-5.x

 

C

ISA String

COMPLETED

COMPLETED

Linux-5.x

Linux-5.x

 

B

ISA String

NA

NA

 

 

Bundle of extensions: Zba, Zbb, and Zbs

Zicsr

ISA String

NA

COMPLETED

 

Linux-6.6

Implied by F

Zicntr

ISA String

NA

COMPLETED

 

Linux-6.6

Mandatory for Linux RISC-V

Zihpm

ISA String

NA

COMPLETED

 

Linux-6.6

Separate ioctl() available for user-space HPM access

Ziccif

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Ziccrse

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Ziccamoa

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Zicclsm

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Za64rs

ISA String

NA

NA

 

 

 

Zihintpause

ISA String

COMPLETED

COMPLETED

Linux-6.10

Linux-6.1

 

Zba

ISA String

COMPLETED

COMPLETED

Linux-6.5

Linux-6.6

Implied by B

Zbb

ISA String

COMPLETED

COMPLETED

Linux-6.3

Linux-6.4

Implied by B

Zbs

ISA String

COMPLETED

COMPLETED

Linux-6.5

Linux-6.6

Implied by B

Zic64b

ISA String

NA

NA

 

 

HWPROBE and KVM ONE_REG will have separate attributes for Zicbom, Zicbop, and Zicboz block size

Zicbom

ISA String

TBD

COMPLETED

 

Linux-6.1

 

Zicbop

ISA String

TBD

TBD

 

 

 

Zicboz

ISA String

COMPLETED

COMPLETED

Linux-6.7

Linux-6.4

 

Zfhmin

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zkt

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

RVA23U64 Mandatory

V

ISA String

COMPLETED

COMPLETED

Linux-6.5

Linux-6.5

 

Zvfhmin

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zvbb

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zvkt

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zihintntl

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zicond

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.7

 

Zimop

ISA String

COMPLETED

COMPLETED

Linux-6.11

Linux-6.11

 

Zcmop

ISA String

COMPLETED

COMPLETED

Linux-6.11

Linux-6.11

 

Zcb

ISA String

COMPLETED

COMPLETED

Linux-6.11

Linux-6.11

 

Zfa

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zawrs

ISA String

COMPLETED

COMPLETED

Linux-6.11

Linux-6.11

 

Supm

ISA String

COMPLETED

NA

Linux-6.13

 

 

RVA23U64 Optional (Localized)

Zvkng

ISA String

NA

NA

 

 

Bundle of extensions: Zvkn and Zvkg

Zvksg

ISA String

NA

NA

 

 

Bundle of extensions: Zvks and Zvkg

Zvkn

ISA String

NA

NA

 

 

Implied by Zvkng
Bundle of extensions: Zvkned, Zvknhb, Zvkb and Zvkt

Zvks

ISA String

NA

NA

 

 

Implied by Zvksg
Bundle of extensions: Zvksed, Zvksh, Zvkb, and Zvkt

Zvkned

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvkn

Zvknhb

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvkn

Zvkb

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvkn

Zvkt

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvkn and Zvks

Zvkg

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvkng and Zvksg

Zvksed

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvks

Zvksh

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvks

Zvkb

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

Implied by Zvks

RVA23U64 Optional (Development)

Zabha

ISA String

TBD

TBD

 

 

 

Zacas

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.9

 

Ziccamoc

ISA String

NA

NA

 

 

 

Zvbc

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zama16b

ISA String

NA

NA

 

 

 

RVA23U64 Optional (Expansion)

Zfh

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zbc

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zicfilp

ISA String

NA

TBD

 

 

 

Zicfiss

ISA String

NA

TBD

 

 

 

Zvfh

ISA String

COMPLETED

COMPLETED

Linux-6.8

Linux-6.8

 

Zfbfmin

ISA String

TBD

TBD

 

 

 

Zvfbfmin

ISA String

TBD

TBD

 

 

 

Zvfbfwma

ISA String

TBD

TBD

 

 

 

RVA22S64 Mandatory

Svbare

DeviceTree or ACPI

NA

COMPLETED

 

Linux-6.6

 

Sv39

DeviceTree or ACPI

COMPLETED

COMPLETED

Linux-6.11

Linux-6.6

HWPROBE Key HIGHEST_VIRT_ADDRESS

Svade

ISA String

NA

COMPLETED

 

Linux-6.13

 

Ssccptr

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Sstvecd

ISA String

NA

TBD

 

 

 

Sstvala

ISA String

NA

TBD

 

 

 

Sscounterenw

ISA String

NA

TBD

 

 

 

Svpbmt

ISA String

NA

COMPLETED

 

Linux-5.20

 

Svinval

ISA String

NA

COMPLETED

 

Linux-6.1

 

RVA23S64 Mandatory

Zifencei

ISA String

NA

COMPLETED

 

Linux-6.6

HWPROBE not required because mandatory for Linux

Ss1p13

ISA String

NA

NA

 

 

Does this need HWPROBE and KVM ONE_REG support ?

Svnapot

ISA String

NA

COMPLETED

 

Linux-6.5

 

Sstc

ISA String

NA

COMPLETED

 

Linux-6.0

 

Sscofpmf

ISA String

NA

COMPLETED

 

Linux-6.10

 

Ssnpm

ISA String

NA

COMPLETED

 

Linux-6.13

 

Ssu64xl

ISA String

NA

TBD

 

 

 

Sha

ISA String

NA

NA

 

 

The augmented hypervisor extension.
Bundle of extensions: H, Sstateen, Shcounterenw, Shvstvala, Shtvala, Shvstvecd, Shvsatpa, and Shgatpa

H

ISA String

NA

COMPLETED

 

 

Implied by Sha

Sstateen

ISA String

NA

TBD

 

 

Implied by Sha

Shcounterenw

ISA String

NA

TBD

 

 

Implied by Sha

Shvstvala

ISA String

NA

TBD

 

 

Implied by Sha

Shtvala

ISA String

NA

TBD

 

 

Implied by Sha

Shvstvecd

ISA String

NA

TBD

 

 

Implied by Sha

Shvsatpa

ISA String

NA

TBD

 

 

Implied by Sha

Shgatpa

ISA String

NA

TBD

 

 

Implied by Sha

RVA22S64 Optional (Expansion)

Sv48

DeviceTree or ACPI

COMPLETED

COMPLETED

Linux-6.11

Linux-6.6

HWPROBE Key HIGHEST_VIRT_ADDRESS

Sv57

DeviceTree or ACPI

COMPLETED

COMPLETED

Linux-6.11

Linux-6.6

HWPROBE Key HIGHEST_VIRT_ADDRESS

Zkr

ISA String

TBD

COMPLETED

 

Linux-6.8

 

RVA23S64 Optional (Expansion)

Svadu

ISA String

NA

COMPLETED

 

Linux-6.13

 

Sdtrig

ISA String

NA

TBD

 

 

 

Ssstrict

ISA String

NA

TBD

 

 

 

Svvptc

ISA String

NA

TBD

 

 

 

Sspm

ISA String

NA

TBD