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ACPI/APEI: Update einj documentation for param1/param2

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To ensure EINJ working well when injecting errors via EINJ
table, add some restrictions: param1 must be a valid physical
RAM address and param2 must specify page granularity or
narrower.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Chen Gong 2013-06-06 15:28:11 -07:00 committed by Tony Luck
parent c5a130325f
commit ace3647afb
1 changed files with 7 additions and 2 deletions
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9
Documentation/acpi/apei/einj.txt
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@ -47,11 +47,16 @@ directory apei/einj. The following files are provided.
- param1 - param1
This file is used to set the first error parameter value. Effect of This file is used to set the first error parameter value. Effect of
parameter depends on error_type specified. parameter depends on error_type specified. For example, if error
type is memory related type, the param1 should be a valid physical
memory address.
- param2 - param2
This file is used to set the second error parameter value. Effect of This file is used to set the second error parameter value. Effect of
parameter depends on error_type specified. parameter depends on error_type specified. For example, if error
type is memory related type, the param2 should be a physical memory
address mask. Linux requires page or narrower granularity, say,
0xfffffffffffff000.
- notrigger - notrigger
The EINJ mechanism is a two step process. First inject the error, then The EINJ mechanism is a two step process. First inject the error, then