On Sun, Jan 06, 2019 at 08:31:53AM -0500, Greg Troxel wrote: > Why do we generate code with unaligned access in user space? That seems > surprising, if the processor isn't happy about it.
The processor is happy with it, both in user- and kernel space. Only special memory regions mapped uncached make it trap. Nick suggest to change the mapping for bus_dma to cached, which would avoid the issue but may expose bugs in device drivers. Martin
