I am not sure what does this following means:-
[ 0.652039] ACPI: Added _OSI(Module Device)
[ 0.652044] ACPI: Added _OSI(Processor Device)
[ 0.652049] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.652054] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.656286] ACPI: EC: Look up EC in DSDT
[ 0.660361] ACPI: Executed 1 blocks of module-level executable AML code
**[ 0.720310] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored**
[ 0.721539] ACPI: SSDT 000000009ce70798 00727 (v01 PmRef Cpu0Cst 00003001 INTL 20100121)
[ 0.722623] ACPI: Dynamic OEM Table Load:
[ 0.722630] ACPI: SSDT (null) 00727 (v01 PmRef Cpu0Cst 00003001 INTL 20100121)
[ 0.752832] ACPI: SSDT 000000009ce71a98 00303 (v01 PmRef ApIst 00003000 INTL 20100121)
What kind of bug is this? Does this bug affects my system performance.