92fa7e24cb
Use MADT to match ACPI Processor objects to CPUs. MADT and DSDT/SSDTs may list CPUs in different orders, especially for disabled logical cores. Now we match ACPI IDs from the MADT with Processor objects, strictly order CPUs accordingly, and ignore disabled cores. This prevents us from executing methods for other CPUs, e. g., _PSS for disabled logical core, which may not exist. Unfortunately, it is known that there are a few systems with buggy BIOSes that do not have unique ACPI IDs for MADT and Processor objects. To work around these problems, 'debug.acpi.cpu_unordered' tunable is added. Set this to a non-zero value to restore the old behavior. Many thanks to jhb for pointing me to the right direction and the manual page change. Reported by: Harris, James R (james dot r dot harris at intel dot com) Tested by: Harris, James R (james dot r dot harris at intel dot com) Reviewed by: jhb MFC after: 1 month |
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