[PATCH 1/4 v2] ACPI: extlog: Trace CPER Non-standard Section Body

Fabio M. De Francesco
2025-04-29T17:21:28Z

ghes_do_proc() has a catch-all for unknown or unhandled CPER formats
(UEFI v2.10 Appendix N 2.3), extlog_print() does not. This gap was
noticed by a RAS test that injected CXL protocol errors which were
notified to extlog_print() via the IOMCA (I/O Machine Check
Architecture) mechanism. Bring parity to the extlog_print() path by
including a similar log_non_standard_event().

Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Fabio M. De Francesco <fabio.m.de.francesco@linux.intel.com>
---
drivers/acpi/acpi_extlog.c | 6 ++++++
drivers/ras/ras.c | 1 +
2 files changed, 7 insertions(+)

diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c
index f7fb7205028d..caca6ccd6e99 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -182,6 +182,12 @@ static int extlog_print(struct notifier_block *nb, unsigned long val,
if (gdata->error_data_length >= sizeof(*mem))
trace_extlog_mem_event(mem, err_seq, fru_id, fru_text,
(u8)gdata->error_severity);
+ } else {
+ void *err = acpi_hest_get_payload(gdata);
+
+ log_non_standard_event(sec_type, fru_id, fru_text,
+ gdata->error_severity, err,
+ gdata->error_data_length);
}
}

diff --git a/drivers/ras/ras.c b/drivers/ras/ras.c
index a6e4792a1b2e..ac0e132ccc3e 100644
--- a/drivers/ras/ras.c
+++ b/drivers/ras/ras.c
@@ -51,6 +51,7 @@ void log_non_standard_event(const guid_t *sec_type, const guid_t *fru_id,
{
trace_non_standard_event(sec_type, fru_id, fru_text, sev, err, len);
}
+EXPORT_SYMBOL_GPL(log_non_standard_event);

void log_arm_hw_error(struct cper_sec_proc_arm *err)
{
--
2.48.1