Hi everyone. You write (and we can read on some docs) that DMA an PCI acess can cause long-latency. I don't understand why. I'am not a guru and knwo perfectly how the dma work but i thought that the cpu ask for a dma to a device. The device is then autonomous for acessing the memory. I wonder why the cpu is "locked" ? What the dma brings if the cpu can't continue his work ? Thanks for your help. Paul. - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
