diff options
| author | Fabian Imhof <fabian.imhof@ost.ch> | 2024-10-15 15:48:43 +0000 |
|---|---|---|
| committer | Fabian Imhof <fabian.imhof@ost.ch> | 2024-10-15 15:48:43 +0000 |
| commit | 0c4fd9eaed4a71975879aa83cd2da4b6266a64b5 (patch) | |
| tree | 0fb3ef311223e4a9a36ba9fc0fa0e7af1c312596 /arch/x86_64/src/boot | |
| parent | 429d99ca40254e9e19da938ff9f2065a543708cd (diff) | |
| download | teachos-0c4fd9eaed4a71975879aa83cd2da4b6266a64b5.tar.xz teachos-0c4fd9eaed4a71975879aa83cd2da4b6266a64b5.zip | |
add 4th level page table
Diffstat (limited to 'arch/x86_64/src/boot')
| -rw-r--r-- | arch/x86_64/src/boot/boot.s | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86_64/src/boot/boot.s b/arch/x86_64/src/boot/boot.s index 0c21c66..29ac58d 100644 --- a/arch/x86_64/src/boot/boot.s +++ b/arch/x86_64/src/boot/boot.s @@ -264,6 +264,12 @@ enable_paging: mov $page_map_level_4, %eax mov %eax, %cr3 + /* Map the P4 table recursively */ + mov $page_map_level_4, %eax + or 0b11, %eax + // TODO: WHY THIS THROW ERROR? + mov %eax, [$page_map_level_4 + 511 * 8] + /* Enable Physical Address Extension */ mov %cr4, %eax or $(1 << 5), %eax |