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authorLv Zheng <lv.zheng@intel.com>2014-03-24 14:48:45 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-03-26 16:25:59 +0100
commite2b8ddcc6b3fbb860e15c5d52455735e128326aa (patch)
treebf13dd14aeb07496271de07f7392b470fd6a12be /Documentation/kernel-parameters.txt
parent6e596084833b95662dfe90e1f30d83ccbd64575c (diff)
downloadlinux-e2b8ddcc6b3fbb860e15c5d52455735e128326aa.tar.bz2
ACPICA: Remove global option to serialize all control methods.
According to the reports, the "acpi_serialize" mechanism is broken as: A. The parallel method calls can still happen when the interpreter lock is released under the following conditions: 1. External callbacks are invoked, for example, by the region handlers, the exception handlers, etc.; 2. Module level execution is performed when Load/LoadTable opcodes are executed, and 3. The _REG control methods are invoked to complete the region registrations. B. For the following situations, the interpreter lock need to be released even for a serialized method while currently, the lock-releasing operation is marked as a no-op by acpi_ex_relinquish/reacquire_interpreter() when this mechanism is enabled: 1. Wait opcode is executed, 2. Acquire opcode is executed, and 3. Sleep opcode is executed. This patch removes this mechanism and the internal acpi_ex_relinquish/reacquire_interpreter() APIs. Lv Zheng. References: https://bugzilla.kernel.org/show_bug.cgi?id=52191 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt2
1 files changed, 0 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index bf0fda0125f0..3eae32f34122 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -306,8 +306,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
acpi_sci= [HW,ACPI] ACPI System Control Interrupt trigger mode
Format: { level | edge | high | low }
- acpi_serialize [HW,ACPI] force serialization of AML methods
-
acpi_skip_timer_override [HW,ACPI]
Recognize and ignore IRQ0/pin2 Interrupt Override.
For broken nForce2 BIOS resulting in XT-PIC timer.