Transparent Huge Pages
From LinuxMIPS
Transparent Huge Page support for MIPS is currently under development. THP is currently planned to only be available for 64-bit kernels. A git tree at [1] contains the development code.
Hardware requirements
Only R4000-style TLBs are supported. R8000 support may be added in the distant future. The NEC VR41xx processors have such a TLB but do not support the necessary huge page size not even for 4kB base page size so huge page support is not possible for them.
Size of Huge Pages
| Base Page Size | Huge Page Size | Comments |
|---|---|---|
| 4kB | 2MB | |
| 8kB | 8MB | R8000 and Cavium cnMIPS cores only |
| 16kB | 32MB | |
| 32kB | 128MB | Cavium cnMIPS cores only |
| 64kB | 512MB |
