[转] DMA cache 一致性问题

转自  https://blog.csdn.net/wdjjwb/article/details/87713477

dc civac Data or unified Cache line Clean and Invalidate by VA to PoC
dc ivac Data or unified Cache line Invalidate by VA to PoC

原文：https://www.cnblogs.com/yi-mu-xi/p/15044069.html