From 1c1f875f4ba355a400a6b4f976ff68e7495f2785 Mon Sep 17 00:00:00 2001 From: Robert Moore Date: Thu, 28 Mar 2013 09:44:09 -0700 Subject: [PATCH] Logfile: Changes for version 20130328. Version 20130328. --- documents/changes.txt | 75 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/documents/changes.txt b/documents/changes.txt index cf247faf8..dd8b8067f 100755 --- a/documents/changes.txt +++ b/documents/changes.txt @@ -1,3 +1,78 @@ +---------------------------------------- +28 March 2013. Summary of changes for version 20130328: + +1) ACPICA kernel-resident subsystem: + +Fixed several possible race conditions with the internal object reference +counting mechanism. Some of the external ACPICA interfaces update object +reference counts without holding the interpreter or namespace lock. This +change adds a spinlock to protect reference count updates on the internal +ACPICA objects. Reported by and with assistance from Andriy Gapon +(avg@FreeBSD.org). + +FADT support: Removed an extraneous warning for very large GPE register +sets. This change removes a size mismatch warning if the legacy length +field for a GPE register set is larger than the 64-bit GAS structure can +accommodate. GPE register sets can be larger than the 255-bit width +limitation of the GAS structure. Linn Crosetto (linn@hp.com). + +_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error +return from this interface. Handles a possible timeout case if +ACPI_WAIT_FOREVER is modified by the host to be a value less than +"forever". Jung-uk Kim. + +Predefined name support: Add allowed/required argument type information to +the master predefined info table. This change adds the infrastructure to +enable typechecking on incoming arguments for all predefined +methods/objects. It does not actually contain the code that will fully +utilize this information, this is still under development. Also condenses +some duplicate code for the predefined names into a new module, +utilities/utpredef.c + +Example Code and Data Size: These are the sizes for the OS-independent +acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The +debug version of the code includes the debug output trace mechanism and +has a much larger code and data size. + + Previous Release: + Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total + Debug Version: 182.9K Code, 75.6K Data, 258.5K Total + Current Release: + Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total + Debug Version: 183.0K Code, 76.0K Data, 259.0K Total + + +2) iASL Compiler/Disassembler and Tools: + +iASL: Implemented a new option to simplify the development of ACPI-related +BIOS code. Adds support for a new "offset table" output file. The -so +option will create a C table containing the AML table offsets of various +named objects in the namespace so that BIOS code can modify them easily at +boot time. This can simplify BIOS runtime code by eliminating expensive +searches for "magic values", enhancing boot times and adding greater +reliability. With assistance from Lee Hamel. + +iASL: Allow additional predefined names to return zero-length packages. +Now, all predefined names that are defined by the ACPI specification to +return a "variable-length package of packages" are allowed to return a +zero length top-level package. This allows the BIOS to tell the host that +the requested feature is not supported, and supports existing BIOS/ASL +code and practices. + +iASL: Changed the "result not used" warning to an error. This is the case +where an ASL operator is effectively a NOOP because the result of the +operation is not stored anywhere. For example: + Add (4, Local0) +There is no target (missing 3rd argument), nor is the function return +value used. This is potentially a very serious problem -- since the code +was probably intended to do something, but for whatever reason, the value +was not stored. Therefore, this issue has been upgraded from a warning to +an error. + +AcpiHelp: Added allowable/required argument types to the predefined names +info display. This feature utilizes the recent update to the predefined +names table (above). + ---------------------------------------- 14 February 2013. Summary of changes for version 20130214: