From 22b5afce6a0f29f995b0cce83a5033892dd306d8 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Mon, 24 Mar 2014 14:49:00 +0800 Subject: ACPICA: Add auto-serialization support for ill-behaved control methods. This change adds support to automatically mark a control method as "serialized" if the method creates any named objects. This will positively prevent the method from being entered by more than one thread and thus preventing a possible abort when an attempt is made to create an object twice. Implemented by parsing all non-serialize control methods at table load time. This feature is disabled by default and this patch also adds a new Linux kernel parameter "acpi_auto_serialize" to allow this feature to be turned on for a specific boot. References: https://bugzilla.kernel.org/show_bug.cgi?id=52191 Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- Documentation/kernel-parameters.txt | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'Documentation/kernel-parameters.txt') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 3eae32f3412..a159537ea88 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -229,6 +229,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. use by PCI Format: ,... + acpi_auto_serialize [HW,ACPI] + Enable auto-serialization of AML methods + AML control methods that contain the opcodes to create + named objects will be marked as "Serialized" by the + auto-serialization feature. + This feature is disabled by default. + This option allows to turn on the feature. + acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT acpica_no_return_repair [HW, ACPI] -- cgit v1.2.3-70-g09d2