ACPI, APEI, EINJ injection parameters support
Some hardware error injection needs parameters, for example, it is
useful to specify memory address and memory address mask for memory
errors.
Some BIOSes allow parameters to be specified via an unpublished
extension. This patch adds support to it. The parameters will be
ignored on machines without necessary BIOS support.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
index 838b7f0..dfab718 100644
--- a/Documentation/acpi/apei/einj.txt
+++ b/Documentation/acpi/apei/einj.txt
@@ -45,5 +45,15 @@
injection. Before this, please specify all necessary error
parameters.
+- param1
+ This file is used to set the first error parameter value. Effect of
+ parameter depends on error_type specified. For memory error, this is
+ physical memory address.
+
+- param2
+ This file is used to set the second error parameter value. Effect of
+ parameter depends on error_type specified. For memory error, this is
+ physical memory address mask.
+
For more information about EINJ, please refer to ACPI specification
version 4.0, section 17.5.