DMA Remapping:Memory Type

本文记录Intel VT-d spec中，“DMA Remapping”一章中“Memory Type”一节的相关笔记

devices operating inside processor coherency domain ，这种devices(比如IGD,Intel processor Graphics Device)可以直接访问CPU L3 cache，对于这种devices，Memory-type才有意义。对于devices operating outside processor coherency domain，可以忽略Memory-type。