RISC-V International
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- This page only tracks extensions and features that are specified by groups (TGs, HCs) of RISC-V International.
- The extensions and features are grouped by their specification's state.
- Published (official) specifications can be found here: https://riscv.org/technical/specifications/
- The main repository of the ISA specifications is: https://github.com/riscv/riscv-isa-manual
- The On Deck Dashboards Specification Status lists the specifications that are frozen and ready for ratification
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| Extension | Spike | Qemu | Binutils | GCC | glibc | newlib | LLVM | OpenSBI | FreeBSD | Linux kernel | GDB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vector: Zvamo, Zvlsseg, Zvediv, Zvqmac, Zve32x, Zve32f, Zve64x, Zve64f, Zve64d, Zvfh, Zve | upstream | upstream(but v0.7.1) | upstream (but v0.7.1) | upstream | upstream (experimental,FP16 ABI not settled) | not supported | ||||||
| Bitmanip: Zba, Zbb, Zbc, Zbs | upstream | upstream | PR | dev branch | upstream | upstream (experimental) | not used | |||||
| FP in INT regs: Zfinx | staging branch | staging branch | upstream(Zfinx, Zdinx) | PR | not supported | |||||||
| Half Width FP: Zfh, Zfhmin | upstream | staging branchmc | upstream | not supported | ||||||||
| ePMP: Smepmp | mcnot supported | |||||||||||
| Scalar crypto: Zbkb, Zbkc, Zbkx, Zknd, Zkne, Zknh, Zksed, Zksh, Zkn, Zks, Zkt, Zk, Zkr | upstream | staging branch | upstream | upstream(only minimal support and wait c-api merge) | MC | not used | ||||||
| Priv 1.12: Sm1-12, Ss1-12, Sv57 | not supported | |||||||||||
| CMO base: Zicbom, Zicbop, Zicboz | staging branch | not supported | ||||||||||
| Hypervisor: H | upstream | upstream | dev branch | n/a | n/a | n/a | upstream | not supported | upstream (5.16) | |||
| State Enable: Smstateen | not supported | |||||||||||
| Time compare: Sstc | not supported | |||||||||||
| Counter overflow and filtering: Sscofmpf | not supported | |||||||||||
| Fast TLP invalidation: Svinval | upstream | staging branch | not supported | |||||||||
| NAPOT pages: Svnapot | upstream | staging branch | not supported | |||||||||
| Page-based memory types: Svpbmt | upstream | staging branch | not supported | |||||||||
| Code Size Reduction: Zcee | dev branch | dev branch | dev branch | dev branch | dev - branch | not supported | ||||||
| Packed SIMD: Zpn, Zpsfoperand, Zprvsfextra | upstream( v0.9.2) | PR | PR | not supported | ||||||||
| Resumable Non-maskable Interrupts: Smrnmi | not supported | |||||||||||
| Core-local Interrupt Controller: CLINT | upstream | upstream | upstream | upstream (clocksource) | ||||||||
| Advanced Core-local Interrupt Controller: ACLINT | upstream | not supported | Patchwork | |||||||||
| Zmmul | upstream | Mailpatch | Mailpatch | patch | n/a | |||||||
| Pointer masking: Zjpm | not supported |
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