3 ms·
It is explained in the FAQ: There was a bug in early Pentiums called the f00f bug, it would cause a deadlock if you provided an invalid operand to cmpxchg8b wh
by lapsis_beeftech 4y ago
It is explained in the FAQ:
There was a bug in early Pentiums called the f00f bug, it would cause a deadlock if you provided an invalid operand to cmpxchg8b while using the lock prefix. It was an important vulnerability at the time, and I thought it would be fun to own lock.cmpxchg8b.com.