man -s3C madvise gives more details.
To be or not to be is true. G. Boole No it isn't. L. E. J. Brouwer
sorry cos its not a unix specific question. i noticed that some
devices like the NIC and graphics adapter have a "memory"range and IO
range ( i actually saw it in windows). does memory range mean that
these devices have direct access ( not DMA/bus mastering) to the
system memory? or does is pertain to memory that is present in the
device which is mapped ? if so what does IO range mean? does unix
handle it the same way? i posted in comp.hardware and a winx group..
but i cudn't get satisfactory answers.