x86/x86_64/mm.rst

20    from TB to GB and then MB/KB.
22  - "16M TB" might look weird at first sight, but it's an easier way to visualize size
23    notation than "16 EB", which few will recognize at first sight as 16 exabytes.
35 …0000800000000000 | +128    TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of…
51    ffffec0000000000 |  -20    TB | fffffbffffffffff |   16 TB | KASAN shadow memory
65 …ffffffff80000000 |   -2    GB | ffffffff9fffffff |  512 MB | kernel text mapping, mapped to physic…
66    ffffffff80000000 |-2048    MB |                  |         |
67    ffffffffa0000000 |-1536    MB | fffffffffeffffff | 1520 MB | module mapping space
68    ffffffffff000000 |  -16    MB |                  |         |
69 …FIXADDR_START | ~-11    MB | ffffffffff5fffff | ~0.5 MB | kernel-internal fixmap range, variable s…
70    ffffffffff600000 |  -10    MB | ffffffffff600fff |    4 kB | legacy vsyscall ABI
71    ffffffffffe00000 |   -2    MB | ffffffffffffffff |    2 MB | ... unused hole
94 …0100000000000000 |  +64    PB | feffffffffffffff | ~16K PB | ... huge, still almost 64 bits wide h…
124 …ffffffff80000000 |   -2    GB | ffffffff9fffffff |  512 MB | kernel text mapping, mapped to physic…
125    ffffffff80000000 |-2048    MB |                  |         |
126    ffffffffa0000000 |-1536    MB | fffffffffeffffff | 1520 MB | module mapping space
127    ffffffffff000000 |  -16    MB |                  |         |
128 …FIXADDR_START | ~-11    MB | ffffffffff5fffff | ~0.5 MB | kernel-internal fixmap range, variable s…
129    ffffffffff600000 |  -10    MB | ffffffffff600fff |    4 kB | legacy vsyscall ABI
130    ffffffffffe00000 |   -2    MB | ffffffffffffffff |    2 MB | ... unused hole
156 For both 4- and 5-level layouts, the STACKLEAK_POISON value in the last 2MB