ioremap_nocache
hi,
In my system I have defined following system map using mem directive. -------------------------------------------------------------------- 0x0000 0000 96MB Start Linux 0x05FF FFFF End Linux -------------------------------------------------------------------- 0x0600 0000 32MB Start Reserved memory Hole 0x07FF FFFF End Reserved memory Hole -------------------------------------------------------------------- 0x0800 0000 128MB Start Linux 0x0FFF FFFF End Linux -------------------------------------------------------------------- We have created the “Reserved memory Hole” using mem directive in Linux. So Linux kernel is “not aware” of this reserved memory. What will be the configuration state (cacheable/bufferable) of this memory? if we now call ioremap_nocache on this reserved memory chunk. it will be configured as non-cacheable memory but will it be bufferable or not? thanks, Sachin |
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