On Wed, Jun 19, 2013 at 11:27:42PM +0530, Naveen N. Rao wrote:Add a boot option to disable firmware first mode for corrected errors.
Signed-off-by: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
Documentation/x86/x86_64/boot-options.txt | 5 +++++
arch/x86/include/asm/acpi.h | 2 ++
arch/x86/kernel/acpi/boot.c | 5 +++++
drivers/acpi/apei/hest.c | 3 ++-
4 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index e9e8ddb..1228b22 100644
@@ -176,6 +176,11 @@ ACPI
acpi=noirq Don't route interrupts
+ acpi=nocmcff Disable firmware first mode for corrected errors. This
+ disables parsing the HEST CMC error source to check if
+ firmware has set the FF flag. This may result in
+ duplicate corrected error reports.
Ok, this option should be called something more vendor-agnostic like
CMCI is Intel-specific and Firmware First is a generic way to say that
firmware would like to look at the errors first.
AMD has similar thing called error thresholding so...