Messages in this thread | | | Date | Sun, 19 Jun 2011 18:42:52 -0600 | From | Matthew Wilcox <> | Subject | Re: [PATCH 00/10] Enhance /dev/mem to allow read/write of arbitrary physical addresses |
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On Mon, Jun 20, 2011 at 09:02:17AM +1000, Ryan Mallon wrote: > There are drivers where this makes sense. For example an FPGA device > with a proprietary register layout on the memory bus can be done this > way. The FPGA can simply be mapped in user-space via /dev/mem and > handled there. If the device requires no access other than memory bus > reads and writes then writing a custom char device driver just to get an > mmap function seems a bit overkill.
Calling a 30 line device driver "overkill" might in itself be overkill?
-- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."
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