hi everbody,
Can anybody please tell me or give me an hint/links,

Is there any relation between MTRR's availblility and Interrupts (Interrupt is generated by some peripherals to PC)

Let me come to my particular case: I have one paralel driver module which use the IRQ7. Which was working well. All of suddenly yesterday could not receive any data from the external peripheral, eventhough my peripheral generate the interrupt, my PC could not recognize it and execute the IRQ.

When the module was working well, no more MTRR's availble message was not there in dmesg. Since yesterday , after inserting the modules, I could see this dmesg such as

no more MTRR's availble
no more MTRR's availble
no more MTRR's availble
no more MTRR's availble

Please give me any hints/source links. I have tried to google it. But I could't come to any conclusion, because of lack of my knowledge in LINUX,

thanks in advance
Regards
Ravi