Bug 5650

Summary: evalutate Processor._INI after hot-add operation
Product: ACPI Reporter: Len Brown (lenb)
Component: Config-HotplugAssignee: ykzhao (yakui.zhao)
Status: REJECTED DOCUMENTED    
Severity: normal CC: acpi-bugzilla
Priority: P2    
Hardware: i386   
OS: Linux   
Kernel Version: 2.6 Subsystem:
Regression: --- Bisected commit-id:

Description Len Brown 2005-11-23 11:53:03 UTC 
Linux to date does not evaluate the Processor._INI
method when a processor is added to a system.
Firmware on future systems will require that it does
for the operation to be successful.
Comment 1 Fu Michael 2007-11-13 23:57:04 UTC 
yakui to add this...
Comment 2 ykzhao 2007-12-04 22:13:31 UTC 
According to ACPI spec the control method is run only when OSPM load a dscription table.  If the device becomes present after the table has already been loaded, OSPM won't evaluate the _INI method , nor examine the children for _INI method. 
Is it necessary to execute the Processor._INI method when a processor is added to a system if the _INI method is evaluated when the table is loaded dynamically? 
(_INI method is executed in the ACPICA after completing the load of static DSDT/SSDT.)
Comment 3 ykzhao 2008-03-03 19:14:52 UTC 
    According to the ACPI spec, the _INI method is only executed only when OSPM loads a decription table. If the device becomes present after the table has already been loaded, OSPM will not evaluate the _INI method, nor examine the children for _INI methods. 
    Based on the above description it seems unnecessary to evaluate the processor._INI after hot-add operation. So the bug will be rejected.
   
    Thanks.