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ACPI/APEI: Update einj documentation for param1/param2
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>
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Documentation/acpi/apei/einj.txt
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Documentation/acpi/apei/einj.txt
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- param1
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This file is used to set the first error parameter value. Effect of
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parameter depends on error_type specified.
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parameter depends on error_type specified. For example, if error
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type is memory related type, the param1 should be a valid physical
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memory address.
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- param2
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This file is used to set the second error parameter value. Effect of
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parameter depends on error_type specified.
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parameter depends on error_type specified. For example, if error
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type is memory related type, the param2 should be a physical memory
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address mask. Linux requires page or narrower granularity, say,
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0xfffffffffffff000.
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- notrigger
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The EINJ mechanism is a two step process. First inject the error, then