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Global Descriptor Table

matrixrv
Beginner
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The descriptor's addresses mechanism is based on GDT.My unclear problem is :                                      1.Since GDT must be present all time in memory , it's area of memory which reside in is in RAM memory or in Cache L1 memory which i think it must be a content adressable memory.

My presumtion : if it is is in RAM every access must include a  read from RAM, do something, write-back in RAM the descriptor

If it is in L1 cache CAM memory it seem to be more simple ,since CAMis hit or no by a descriptor adress 

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