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diff --git a/changes.txt b/changes.txt index db25f7e5fb91..b40fa3209912 100644 --- a/changes.txt +++ b/changes.txt @@ -1,4 +1,104 @@ ---------------------------------------- +29 September 2017. Summary of changes for version 20170929: + + +1) ACPICA kernel-resident subsystem: + +Redesigned and implemented an improved ASL While() loop timeout +mechanism. This mechanism is used to prevent infinite loops in the kernel +AML interpreter caused by either non-responsive hardware or incorrect AML +code. The new implementation uses AcpiOsGetTimer instead of a simple +maximum loop count, and is thus more accurate and constant across +different machines. The default timeout is currently 30 seconds, but this +may be adjusted later. + +Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to +better reflect the new implementation of the loop timeout mechanism. + +Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support +and to fix an off-by-one error. Jung-uk Kim. + +Fixed an EFI build problem by updating the makefiles to for a new file +that was added, utstrsuppt.c + + +2) iASL Compiler/Disassembler and Tools: + +Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This +includes support in the table disassembler, compiler, and template +generator. + +iASL: Added an exception for an illegal type of recursive method +invocation. If a method creates named objects, the first recursive call +will fail at runtime. This change adds an error detection at compile time +to catch the problem up front. Note: Marking such a method as +"serialized" will not help with this problem, because the same thread can +acquire the method mutex more than once. Example compiler and runtime +output: + + Method (MTH1) + { + Name (INT1, 1) + MTH1 () + } + + dsdt.asl 22: MTH1 () + Error 6152 - ^ Illegal recursive call to method + that creates named objects (MTH1) + +Previous runtime exception: + ACPI Error: [INT1] Namespace lookup failure, + AE_ALREADY_EXISTS (20170831/dswload2-465) + +iASL: Updated support for External() opcodes to improve namespace +management and error detection. These changes are related to issues seen +with multiple-segment namespace pathnames within External declarations, +such as below: + + External(\_SB.PCI0.GFX0, DeviceObj) + External(\_SB.PCI0.GFX0.ALSI) + +iASL: Implemented support for multi-line error/warning messages. This +enables more detailed and helpful error messages as below, from the +initial deployment for the duplicate names error: + + DSDT.iiii 1692: Device(PEG2) { + Error 6074 - ^ Name already exists in scope +(PEG2) + + Original name creation/declaration below: + DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) + +AcpiXtract: Added additional flexibility to support differing input hex +dump formats. Specifically, hex dumps that contain partial disassembly +and/or comments within the ACPI table data definition. There exist some +dump utilities seen in the field that create this type of hex dump (such +as Simics). For example: + + DSDT @ 0xdfffd0c0 (10999 bytes) + Signature DSDT + Length 10999 + Revision 1 + Checksum 0xf3 (Ok) + OEM_ID BXPC + OEM_table_id BXDSDT + OEM_revision 1 + Creator_id 1280593481 + Creator_revision 537399345 + 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 + ... + 2af0: 5f 4c 30 46 00 a4 01 + +Test suite: Miscellaneous changes/fixes: + More cleanup and simplification of makefiles + Continue compilation of test cases after a compile failure + Do not perform binary compare unless both files actually exist + +iASL: Performed some code/module restructuring. Moved all memory +allocation functions to new modules. Two new files, aslallocate.c and +aslcache.c + +---------------------------------------- 31 August 2017. Summary of changes for version 20170831: |