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GDT - Global Descriptor Table

GDT is stored in memory. Its size and address is stored in the GDTR register.
The GDTR register contains 48 bits: 16 bits for the size of the GDT and 32 bits for its address.
Each descriptor stored in a GDT is 64 bits.

TODO

The GDT is located by the GDTR register.

See also

https://github.com/0xax.gitbooks.io/linux-insides/content/Booting/linux-bootstrap-2.html

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