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| author | Felix Morgner <felix.morgner@ost.ch> | 2025-12-16 18:14:11 +0100 |
|---|---|---|
| committer | Felix Morgner <felix.morgner@ost.ch> | 2025-12-16 18:14:18 +0100 |
| commit | 81a434499424f432a576469aad402ff18e05e6b4 (patch) | |
| tree | 004811b21ee6b7c8698903eed47fdf2e35ed35a6 /arch/x86_64/src | |
| parent | 6dfe8a689cdaf39a8bd00b79d9450f454db47e6b (diff) | |
| download | teachos-81a434499424f432a576469aad402ff18e05e6b4.tar.xz teachos-81a434499424f432a576469aad402ff18e05e6b4.zip | |
x86_64/cpu: fix cr3 configuration
Previously, the address of the PML4 was being stored in the upper 52
bits of CR3. This is not correct, since the entire CR3 stores the frame
aligned physical address of the PML4, with the lower bits being used for
flags. This means, that in the implementation of the CR3 accessor, the
frame number, not the address, must be stored, since the value type is
designed using bitfields, reserving the upper 52 bits for address
writes.
Diffstat (limited to 'arch/x86_64/src')
0 files changed, 0 insertions, 0 deletions