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| author | Dave Airlie <airlied@starflyer.(none)> | 2006-01-03 18:18:01 +1100 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2006-01-03 18:18:01 +1100 |
| commit | 97f2aab6698f3ab2552c41c1024a65ffd0763a6d (patch) | |
| tree | bb6e3b2949459f54f884c710fc74d40eef00d834 /Documentation/x86_64/mm.txt | |
| parent | d985c1088146607532093d9eaaaf99758f6a4d21 (diff) | |
| parent | 88026842b0a760145aa71d69e74fbc9ec118ca44 (diff) | |
| download | op-kernel-dev-97f2aab6698f3ab2552c41c1024a65ffd0763a6d.zip op-kernel-dev-97f2aab6698f3ab2552c41c1024a65ffd0763a6d.tar.gz | |
drm: merge in Linus mainline
Diffstat (limited to 'Documentation/x86_64/mm.txt')
| -rw-r--r-- | Documentation/x86_64/mm.txt | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/x86_64/mm.txt b/Documentation/x86_64/mm.txt index 662b739..133561b 100644 --- a/Documentation/x86_64/mm.txt +++ b/Documentation/x86_64/mm.txt @@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables: 0000000000000000 - 00007fffffffffff (=47bits) user space, different per mm hole caused by [48:63] sign extension ffff800000000000 - ffff80ffffffffff (=40bits) guard hole -ffff810000000000 - ffffc0ffffffffff (=46bits) direct mapping of phys. memory +ffff810000000000 - ffffc0ffffffffff (=46bits) direct mapping of all phys. memory ffffc10000000000 - ffffc1ffffffffff (=40bits) hole ffffc20000000000 - ffffe1ffffffffff (=45bits) vmalloc/ioremap space ... unused hole ... @@ -14,6 +14,10 @@ ffffffff80000000 - ffffffff82800000 (=40MB) kernel text mapping, from phys 0 ... unused hole ... ffffffff88000000 - fffffffffff00000 (=1919MB) module mapping space +The direct mapping covers all memory in the system upto the highest +memory address (this means in some cases it can also include PCI memory +holes) + vmalloc space is lazily synchronized into the different PML4 pages of the processes using the page fault handler, with init_level4_pgt as reference. |
