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/blob/main/rva23-profile.adoc
Status
| 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 | |
| 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 | TBD | |||
| Zihintpause | ISA String | COMPLETED | COMPLETED | Linux-6.10 | Linux-6.1 | |
| Zba | ISA String | COMPLETED | COMPLETED | Linux-6.5 | Linux-6.6 | |
| Zbb | ISA String | COMPLETED | COMPLETED | Linux-6.3 | Linux-6.4 | |
| Zbs | ISA String | COMPLETED | COMPLETED | Linux-6.5 | Linux-6.6 | |
| Zic64b | ISA String | TBD | COMPLETED | Linux-6.1 | ||
| 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 | |
RVA23U64 Optional (Localized) | ||||||
| Zvkned | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvknhb | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvkb | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvkt | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvkn | ISA String | COMPLETED | NA | Bundle of extensions: Zvkned, Zvknhb, Zvkb and Zvkt | ||
| Zvkg | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvkng | ISA String | COMPLETED | NA | Bundle of extensions: Zvkn and Zvkg | ||
| Zvksed | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvksh | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zvkb | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
| Zkvs | ISA String | COMPLETED | NA | Bundle of extensions: Zvksed, Zvksh, Zvkb, and Zvkt | ||
| Zvksg | ISA String | COMPLETED | NA | Bundle of extensions: Zvks and Zvkg | ||
RVA23U64 Optional (Development) | ||||||
| Zacas | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.9 | |
| Zvbc | ISA String | COMPLETED | COMPLETED | Linux-6.8 | Linux-6.8 | |
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 | |
| 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 | TBD | |||
| Ssccptr | SBI marchid/mvendorid/mimpid | 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 | SBI marchid/mvendorid/mimpid | 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 | TBD | |||
| Ssu64xl | ISA String | NA | TBD | |||
| H | ISA String | NA | COMPLETED | |||
| Sstateen | ISA String | NA | TBD | |||
| Shcounterenw | ISA String | NA | TBD | |||
| Shvstvala | ISA String | NA | TBD | |||
| Shtvala | ISA String | NA | TBD | |||
| Shvstvecd | ISA String | NA | TBD | |||
| Shvsatpa | ISA String | NA | TBD | |||
| Shgatpa | ISA String | NA | TBD | |||
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 | TBD | |||
| Sdext | ISA String | NA | TBD | |||