AFAMUG, all user processes are allocated from the
virtual memory. so DMA to that doesn't make sense. but
is there some way, i can let the kernel know i am
DMAing to an address location and hence keep it in
main memory until some x seconds??
hi,
i am implementing a pseudo-devicer, many instaces of
this device may be
active, all have to share a resource. all instances
have to synchronize
their access to the resource. trying to implement
this, i ended up with a
less powerful version of semaphores. since the
resultant code became
littl
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