ACPI, APEI, ERST debug support

This patch adds debugging/testing support to ERST. A misc device is
implemented to export raw ERST read/write/clear etc operations to user
space. With this patch, we can add ERST testing support to
linuxfirmwarekit ISO (linuxfirmwarekit.org) to verify the kernel
support and the firmware implementation.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index f8c668f27b5..907e350f1c7 100644
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig
@@ -28,3 +28,12 @@ config ACPI_APEI_EINJ
           EINJ provides a hardware error injection mechanism, it is
           mainly used for debugging and testing the other parts of
           APEI and some other RAS features.
+
+config ACPI_APEI_ERST_DEBUG
+        tristate "APEI Error Record Serialization Table (ERST) Debug Support"
+        depends on ACPI_APEI
+        help
+          ERST is a way provided by APEI to save and retrieve hardware
+          error infomation to and from a persistent store. Enable this
+          if you want to debugging and testing the ERST kernel support
+          and firmware implementation.