ACPI material for v4.8-rc1 - Support for ACPI SSDT overlays allowing Secondary System Description Tables (SSDTs) to be loaded at any time from EFI variables or via configfs (Octavian Purdila, Mika Westerberg). - Support for the ACPI LPI (Low-Power Idle) feature introduced in ACPI 6.0 and allowing processor idle states to be represented in ACPI tables in a hierarchical way (with the help of Processor Container objects) and support for ACPI idle states management on ARM64, based on LPI (Sudeep Holla). - General improvements of ACPI support for NUMA and ARM64 support for ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter). - General improvements of the ACPI table upgrade mechanism and ARM64 support for that feature (Aleksey Makarov, Jon Masters). - Support for the Boot Error Record Table (BERT) in APEI and improvements of kernel messages printed by the error injection code (Huang Ying, Borislav Petkov). - New driver for the Intel Broxton WhiskeyCove PMIC operation region and support for the REGS operation region on Broxton, PMIC code cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker). - New driver for the power participant device which is part of the Dynamic Power and Thermal Framework (DPTF) and DPTF-related code reorganization (Srinivas Pandruvada). - Support for the platform-initiated graceful shutdown feature introduced in ACPI 6.1 (Prashanth Prakash). - ACPI button driver update related to lid input events generated automatically on initialization and system resume that have been problematic for some time (Lv Zheng). - ACPI EC driver cleanups (Lv Zheng). - Documentation of the ACPICA release automation process and the in-kernel ACPI AML debugger (Lv Zheng). - New blacklist entry and two fixes for the ACPI backlight driver (Alex Hung, Arvind Yadav, Ralf Gerbig). - Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker). - ACPI CPPC code changes to make it more robust against possible defects in ACPI tables and new symbol definitions for PCC (Hoan Tran). - System reboot code modification to execute the ACPI _PTS (Prepare To Sleep) method in addition to _TTS (Ocean He). - ACPICA-related change to carry out lock ordering checks in ACPICA if ACPICA debug is enabled in the kernel (Lv Zheng). - Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He, Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki).