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authorLen Brown <len.brown@intel.com>2007-05-29 18:43:33 -0400
committerLen Brown <len.brown@intel.com>2007-05-29 18:43:33 -0400
commitae00d812436dc968f4a5dea7757b6a94910b6dc4 (patch)
tree6acd68850bead001cc74597369307a82bc711f6e /Documentation
parentc420bc9f09a0926b708c3edb27eacba434a4f4ba (diff)
ACPI: extend "acpi_osi=" boot option
The boot option "acpi_osi=" has always disabled Linux _OSI support, thus disabling all OS Interface strings which are advertised by Linux to the BIOS. Now... acpi_osi="string" adds the interface string, and acpi_osi="!string" invalidates the pre-defined interface string eg. acpi_osi="!Windows 2006" would disable Linux's claim of Vista compatibility. Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index aae2282600c..79150144dca 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -170,7 +170,10 @@ and is between 256 and 4096 characters. It is defined in the file
acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS
Format: To spoof as Windows 98: ="Microsoft Windows"
- acpi_osi= [HW,ACPI] empty param disables _OSI
+ acpi_osi= [HW,ACPI] Modify list of supported OS interface strings
+ acpi_osi="string1" # add string1 -- only one string
+ acpi_osi="!string2" # remove built-in string2
+ acpi_osi= # disable all strings
acpi_serialize [HW,ACPI] force serialization of AML methods