Re: [PATCH] 2.5.17 /dev/ports

[Martin Dalecki]

Uz.ytkownik Alan Cox napisa?:
>>kmem = kernel memory.  That may not be the same as the physical
>>memory (the fact that it is at present I find mostly irrelevant here).
>>/dev/mem is the more correct device to use for this purpose.
> 
> 
> /dev/mem is also not strictly correct. Linux in/out space is operated as
> synchronous I/O operations. A dumb map of /dev/mem areas can lead to
> differences if the platform concerned has to do the I/O post and wait
> completion handling in software. (O_SYNC is also not enough since thats
> memory caching not PCI posting)
> 

I wisper only - memzone...