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| author | Tianhao Wang <wth@riseup.net> | 2024-02-25 19:13:04 +0100 |
|---|---|---|
| committer | Tianhao Wang <shrik3@mailbox.org> | 2024-06-11 15:13:39 +0200 |
| commit | b31c08a010d5113edb549dc6dda2f726f282277e (patch) | |
| tree | 73345ebe86dba44879b160674c503a1af3cd4b0e | |
| parent | 798501b4b641e4ee7f329b541ca5a52d1155191f (diff) | |
add docs
| -rw-r--r-- | docs/x86_paging.txt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/docs/x86_paging.txt b/docs/x86_paging.txt new file mode 100644 index 0000000..3d6069a --- /dev/null +++ b/docs/x86_paging.txt @@ -0,0 +1,45 @@ + + ++------------+ +| PML4 Entry | ++------------+ + + +0 PRESENT +1 R/W (1 == writable) +2 U/S (1 == user accessable) +3 PWD (write-through) +4 PCD (cache disable) +5 A (Accessed) +6 IGN +7 RES0 +8:10 IGN +11 R (ign, or restart for HLAT paging) +M-1:12 next level table PA[M:12] +51:M RES0 +62:52 IGN +63 XD (execute disable (if EFER.NXE=1)) otherwise RES0 + + ++------------+ +| PDPT ENtry | (level 3) with 1GiB Page (requires PS=1) ++------------+ + +0 PRESENT +1 R/W (1 == writable) +2 U/S (1 == user accessable) +3 PWD (write-through) +4 PCD (cache disable) +5 A (Accessed) +6 D (Dirty) +7 PS (must be 1)* +8 G (Global, if CR4.PGE=1), otherwise INR +10:9 IGR +11 R (ign, or restart for HLAT paging) +12 PAT (indirectly determines memory type) +29:13 RES0 +M-1:30 PA[M-1:30] +51:M RES0 +52:58 IGN +59:62 Protection key +63 XD (execute disable (if EFER.NXE=1)) otherwise RES0 |