Re: How can I test if a physical address is already mapped or not.

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>>When you say an access to physical address, how are you managing to
>>access the physical address directly?

Like this:

unsigned long    * const pReg = (unsigned long*) 0XC0000000 ; 

printk( KERN_INFO"** read (%p) %08lX.\n", pReg, *pReg) ;

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