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authorHuang Ying <ying.huang@intel.com>2010-05-18 14:35:24 +0800
committerLen Brown <len.brown@intel.com>2010-05-19 22:42:08 -0400
commit6e320ec1d98f9eb93d5b2a5d70e2f40dce923f1b (patch)
tree352a2b82433040611f68bf4782eca2e0db28eb15 /Documentation/acpi
parent15b0beaa332b3923cce2ed109e0fb141ec1425d9 (diff)
downloadkernel-6e320ec1d98f9eb93d5b2a5d70e2f40dce923f1b.tar.gz
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 Some BIOSes allow parameters to be specified via an unpublished extension.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>
Diffstat (limited to 'Documentation/acpi')
-rw-r--r--Documentation/acpi/apei/einj.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
index 838b7f0d5e11..dfab71848dc8 100644
--- a/Documentation/acpi/apei/einj.txt
+++ b/Documentation/acpi/apei/einj.txt
@@ -45,5 +45,15 @@ directory apei/einj. The following files are provided.
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.