There are no open issues. For example, a UEFI call to get the time should return the same time that the operating system would get by using the Time and Alarm device. When the emergency passes, the thread will go away and normal life resumes. For more information, see section 9. Posted Oct 16, And it may stay that way; Linus said:
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This device describes and reports the status of a clamshell device’s lid. Lid device This device describes and reports the status of a clamshell device’s lid. So the ACPI “driver” is in the mainline for now.
But that almost certainly requires the intervention agyregator a real scheduler hacker, and they haven’t yet gotten around to solving the problem. For more information, see section It is expected that the time on the platform will be consistent when different firmware interfaces are used to query the platform time.
The ACPI processor aggregator driver
For example, a UEFI call to get the time should return the same avpi that the operating system would get by using the Time and Alarm device. The proper fix would be to enhance the scheduler the right way to provide this functionality. A certain commit merged for 2.
The ACPI folks agtregator originally proposed putting some hacks into the scheduler to implement this functionality. You may also leave feedback directly on GitHub.
Feedback We’d love to hear your thoughts. These actions can be categorized as either passive cooling or active cooling. At least not until we end up having the same issue on some other architecture too, and it turns from a hacky ACPI thing into something more. When a thermal zone starts to overheat, the operating system can take actions to cool down the devices in the zone.
The ACPI processor aggregator driver 
The time capabilities of the Time procesor Alarm device are required for platforms that support the InstantGo feature and the Connected Standby power mode.
Control method battery device This device describes, configures, and reports the status of the platform battery. For more information, see section 8. Logical processor idling as a thermal mitigation The platform can indicate to the operating system that processor cores in the thermal zone should be idled instead of throttled.
To support ACPI thermal management, the system designer logically partitions a hardware platform into one or more physical regions called thermal zones.
These capabilities maintain time-of-day information across system power transitions, and keep track of time even when the platform is turned off.
ACPI provides a mechanism by which it can ask the system to make processors go idle in emergency situations; these can include power problems or an overheating system. For more information, see section 9. For example, ACPI defines a power button, a sleep button, and system indicators.
The driver is little loved, but it will also be little used, can be replaced with a better mechanism if the right people care, and, in the mean time, it may solve a real problem for some users.
For more information, see the following:.
The story goes something like this. Report the thermal zone’s temperature: For more information about thermal management, see the document titled “Thermal Management in Windows” on the Microsoft Connect website.
ACPI Processor Aggregator driver free download for windows – System – System Product Name
If the ACPI hardware starts sounding the red alert, this driver will create a top-priority realtime thread and bind it to the CPU that is to be idled. When the emergency passes, the thread will go away and normal life resumes. It’s a bit of a hack, processlr it gets the job done, and it is not destructive to system state the way hot-unplugging the CPU would be. In the meantime, I personally suspect we probably never want to even try to solve it in the scheduler, because why the hell should we care and add complex logic for something like that?
That thread, when it “runs,” will simply put the CPU into a relatively deep sleep state for a while. There are no open issues.