arch/riscv/vm-layout.rst

21 RISC-V Linux Kernel 64bit
24 The RISC-V privileged architecture document states that the 64bit addresses
42 …0000004000000000 | +256    GB | ffffffbfffffffff | ~16M TB | ... huge, almost 64 bits wide hole of…
50    ffffffc6fea00000 | -228    GB | ffffffc6feffffff |    6 MB | fixmap
51    ffffffc6ff000000 | -228    GB | ffffffc6ffffffff |   16 MB | PCI io
53    ffffffc800000000 | -224    GB | ffffffd7ffffffff |   64 GB | vmalloc/ioremap space
78 …0000800000000000 | +128    TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of…
86    ffff8d7ffea00000 |  -114.5 TB | ffff8d7ffeffffff |    6 MB | fixmap
87    ffff8d7fff000000 |  -114.5 TB | ffff8d7fffffffff |   16 MB | PCI io
90 … ffffaf8000000000 |  -80.5  TB | ffffef7fffffffff |   64 TB | direct mapping of all physical memory
111 …0000000000000000 |   0        | 00ffffffffffffff |   64 PB | user-space virtual memory, different …
114 …0100000000000000 | +64     PB | feffffffffffffff | ~16K PB | ... huge, almost 64 bits wide hole of…
115 …              |            |                  |         | virtual memory addresses up to the -64 PB
122    ff1bfffffea00000 | -57     PB | ff1bfffffeffffff |    6 MB | fixmap
123    ff1bffffff000000 | -57     PB | ff1bffffffffffff |   16 MB | PCI io