●●● ●●●● 4.2 Multithreading Models ●●●● ●●● ●●●0● ●●●0 °one-to- one mode Each user-level thread maps to a kernel thread ← user thread kkkk kernel thread12 4.2 Multithreading Models ⚫ One-to-one model ⚫ Each user-level thread maps to a kernel thread