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ACPI / APEI: Suppress message if HEST not present

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According to the ACPI specification, firmware is not required to provide
the Hardware Error Source Table (HEST). When HEST is not present, the
following superfluous message is printed to the kernel boot log -

[    3.460067] GHES: HEST is not enabled!

Extend hest_disable variable to track whether the firmware provides this
table and if it is not present skip any log output. The existing
behaviour is preserved in all other cases.

Suggested-by: Borislav Petkov <[email protected]>
Signed-off-by: Punit Agrawal <[email protected]>
Reviewed-by: Borislav Petkov <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Punit Agrawal 2017-08-29 14:20:20 +01:00 • committed by Rafael J. Wysocki
commit e931d0dab4
3 changed files with 20 additions and 8 deletions
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8
include/acpi/apei.h
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@ -16,7 +16,13 @@
#ifdef __KERNEL__
extern bool hest_disable;
enum hest_status {
HEST_ENABLED,
HEST_DISABLED,
HEST_NOT_FOUND,
};
extern int hest_disable;
extern int erst_disable;
#ifdef CONFIG_ACPI_APEI_GHES
extern bool ghes_disable;