What is the meaning of reserved bits?

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ehenkes
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What is the meaning of reserved bits?

Post by ehenkes »

If a bit is "reserved" by Intel, does that mean you have to set it to zero in your OS, or does it mean you are not allowed to touch it.
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Fanael
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Re: What is the meaning of reserved bits?

Post by Fanael »

When you are reading a value, changing it and writing it back, then "reserved" means "don't touch". Otherwise it means "put zeros here".
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