3 ms·
> but DMA controllers will understand physical memory Yup, this is what I’ve found on many embedded SoCs. It’s unfortunate. The fact that they need physical ad
by Unklejoe 7y ago
> but DMA controllers will understand physical memory
Yup, this is what I’ve found on many embedded SoCs. It’s unfortunate. The fact that they need physical addresses makes them not worth using in many cases (mainly when trying to move user buffers around).
- hyc_symas 7y agoSun supported DMA to virtual addresses in SunOS / Solaris. Made some aspects of drivers easier.