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Hi, I am new at arm processor. I need to perform possible kernel level optimizations to the code which I already have. Can anyone suggest the possible methods, Is it possible to access the physical memory directly at kernel level? will it help?

123@123

need arm cortex a7 kernel level optimization methods.

Can we access physical memory directly ?

Do we need to disable MMU to access physical memory ? will caches be available if MMU disabled?