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Commit a4c52791 authored by Jiri Slaby's avatar Jiri Slaby Committed by Ingo Molnar
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x86, 64-bit: update address space documentation 



Impact: documentation update

Commit a6523748
(paravirt/x86, 64-bit: move __PAGE_OFFSET to leave a space for hypervisor)
changed address space without changing the documentation.

Change it according to the code change -- direct mapping start:
ffff810000000000 => ffff880000000000 which gives 57 TiB, something
between 45 and 46 bits.

Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent fd51b2d7

Documentation/x86/x86_64/mm.txt

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables: 
0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm

hole caused by [48:63] sign extension

ffff800000000000 - ffff80ffffffffff (=40 bits) guard hole

ffff810000000000 - ffffc0ffffffffff (=46 bits) direct mapping of all phys. memory

ffff880000000000 - ffffc0ffffffffff (=57 TB) direct mapping of all phys. memory

ffffc10000000000 - ffffc1ffffffffff (=40 bits) hole

ffffc20000000000 - ffffe1ffffffffff (=45 bits) vmalloc/ioremap space

ffffe20000000000 - ffffe2ffffffffff (=40 bits) virtual memory map (1TB)