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| author | Shiju Jose <shiju.jose@huawei.com> | 2020-09-03 15:34:55 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-09-16 12:30:42 +0300 |
| commit | 9aa9cf3ee9451d08adafc03cef8e44c7ea3898e7 (patch) | |
| tree | b5287f1db7de74fc23ddd7443839cd192f0169b3 /include/acpi | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| download | linux-9aa9cf3ee9451d08adafc03cef8e44c7ea3898e7.tar.xz | |
ACPI / APEI: Add a notifier chain for unknown (vendor) CPER records
CPER records describing a firmware-first error are identified by GUID.
The ghes driver currently logs, but ignores any unknown CPER records.
This prevents describing errors that can't be represented by a standard
entry, that would otherwise allow a driver to recover from an error.
The UEFI spec calls these 'Non-standard Section Body' (N.2.3 of
version 2.8).
Add a notifier chain for these non-standard/vendor-records. Callers
must identify their type of records by GUID.
Record data is copied to memory from the ghes_estatus_pool to allow
us to keep it until after the notifier has run.
Co-developed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200903123456.1823-2-shiju.jose@huawei.com
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/ghes.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h index 517a5231cc1b..34fb3431a8f3 100644 --- a/include/acpi/ghes.h +++ b/include/acpi/ghes.h @@ -53,6 +53,24 @@ enum { GHES_SEV_PANIC = 0x3, }; +#ifdef CONFIG_ACPI_APEI_GHES +/** + * ghes_register_vendor_record_notifier - register a notifier for vendor + * records that the kernel would otherwise ignore. + * @nb: pointer to the notifier_block structure of the event handler. + * + * return 0 : SUCCESS, non-zero : FAIL + */ +int ghes_register_vendor_record_notifier(struct notifier_block *nb); + +/** + * ghes_unregister_vendor_record_notifier - unregister the previously + * registered vendor record notifier. + * @nb: pointer to the notifier_block structure of the vendor record handler. + */ +void ghes_unregister_vendor_record_notifier(struct notifier_block *nb); +#endif + int ghes_estatus_pool_init(int num_ghes); /* From drivers/edac/ghes_edac.c */ |