There is also an LDT or " Local Descriptor Table ".
2.
The processor makes this memory available through the Global Descriptor Table ( GDT ) and one or more Local Descriptor Tables ( LDTs ).
3.
Call gates use a special selector value to reference a descriptor accessed via the Global Descriptor Table or the Local Descriptor Table, which contains the information needed for the call across privilege boundaries.
4.
:For iii ), windows maintains a Local Descriptor Table for each process; the task switcher is responsible for managing the appropriate CPUMMU registers to make sure the current one is active when a process switch occurs.
5.
Every 8-byte entry in the " GDT " is a descriptor, but these can be Task State Segment ( or TSS ) descriptors, Local Descriptor Table ( LDT ) descriptors, or Call Gate descriptors.
6.
The "'Local Descriptor Table "'( LDT ) is a memory table used in the x86 architecture in protected mode and containing memory segment descriptors : start in linear memory, size, executability, writability, access privilege, actual presence in memory, etc.