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| author | Jiri Slaby <jirislaby@gmail.com> | 2008-11-08 11:24:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-11 19:30:28 +0100 |
| commit | a4c52791fa8c73e3cffe4a82865edb41e8fe8c3c (patch) | |
| tree | 856360987d48df0f88f5ac6034a7a417d7fab526 /Documentation/x86/x86_64 | |
| parent | fd51b2d7d5df932767b89e00d0871a38a2c53e74 (diff) | |
| download | lwn-a4c52791fa8c73e3cffe4a82865edb41e8fe8c3c.tar.gz lwn-a4c52791fa8c73e3cffe4a82865edb41e8fe8c3c.zip | |
x86, 64-bit: update address space documentation
Impact: documentation update
Commit a6523748bddd38bcec11431f57502090b6014a96
(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: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/x86/x86_64')
| -rw-r--r-- | Documentation/x86/x86_64/mm.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt index efce75097369..29b52b14d0b4 100644 --- a/Documentation/x86/x86_64/mm.txt +++ b/Documentation/x86/x86_64/mm.txt @@ -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) |