备忘。
Armv8.1-A
- Atomic memory access instructions (AArch64)
- Limited Order regions (AArch64)
- Increased Virtual Machine Identifier (VMID) size, and Virtualization Host Extensions (AArch64)
- Privileged Access Never (PAN) (AArch32 and AArch64)
Armv8.2-A
- Support for 52-bit addresses (AArch64)
- The ability for PEs to share Translation Lookaside Buffer (TLB) entries (AArch32 and AArch64)
- FP16 data processing instructions (AArch32 and AArch64)
- Statistical profiling (AArch64)
- Reliability Availability Serviceabilty (RAS) support becomes mandatory (AArch32 and AArch64)
Armv8.3-A
- Pointer authentication (AArch64)
- Nested virtualization (AArch64)
- Advanced Single Instruction Multiple Data (SIMD) complex number support (AArch32 and AArc