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Old 05-04-2007, 01:25 AM   #1
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Configuring alien memory as Cacheable/ Non Cacheable

Hello there,

I am running Linux (v2.6.14) on a ARM926EJ-S based board. Though there is 64MB physical RAM, the Linux kernel sees only 60MB of RAM (i did this using the mem=60M kernel param).

I want to configure the remaining 4MB memory into 2MB cacheable region and 2MB non-cacheable region. What is the easiest way to configure alien memory as cacheable and non-cacheable in Linux ? My user applications need direct access to these cacheable and non-cacheable regions of alien memory (using mmap() system call)



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