Comment 27 for bug 197267

@wpshooter, from my understanding, if the kernel detects a problem with the PBLK length then it will not configure up the ACPI CPU throttling. So, basically, you lose the ability to do CPU throttling. Since this is under ACPI control and the BIOS has been found to contain errors in this configuration, the kernel chooses to disable this functionality rather than risk using incorrect configuration, which seems to me like the least risky option for the kernel to make.