Comment by ronsor
16 days ago
> use some kernel-bypass to access hardware directly
You can always mmap /dev/mem to get at physical memory.
16 days ago
> use some kernel-bypass to access hardware directly
You can always mmap /dev/mem to get at physical memory.
No, that's not really what kernel bypass means.
Accessing hardware directky via /dev/mem is literally the original kernel bypass strategy, before we got the UIO and VFIO APIs to do it in a blessed way.