Global Descriptor Table and Local Descriptor Table

I want to know if the global descriptor table resides in each process memory space or it is shared among all p开发者_运维知识库rocesses.

What about LDT?

Where is the LDTR stored?

Thank you.

http://www.internals.com/articles/protmode/protmode.htm

There is a book called 'The Indespensible PC Hardware Book' by Hans-Peter Messmer that goes into this in some detail.