The UEFI 2.9A errata makes clear how ARM processor type encoding should
be done: it is meant to be equal to Generic processor, using a bitmask.
The current code assumes, for both generic and ARM processor types
that this is an integer, which is an incorrect assumption.
Fix it. While here, also fix a compilation issue when using W=1.
After the change, Kernel will properly decode receiving two errors at the same
message, as defined at UEFI spec:
[ 75.282430] Memory failure: 0x5cdfd: recovery action for free buddy page: Recovered
[ 94.973081] {2}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1
[ 94.973770] {2}[Hardware Error]: event severity: recoverable
[ 94.974334] {2}[Hardware Error]: Error 0, type: recoverable
[ 94.974962] {2}[Hardware Error]: section_type: ARM processor error
[ 94.975586] {2}[Hardware Error]: MIDR: 0x000000000000cd24
[ 94.976202] {2}[Hardware Error]: Multiprocessor Affinity Register (MPIDR): 0x000000000000ab12
[ 94.977011] {2}[Hardware Error]: error affinity level: 2
[ 94.977593] {2}[Hardware Error]: running state: 0x1
[ 94.978135] {2}[Hardware Error]: Power State Coordination Interface state: 4660
[ 94.978884] {2}[Hardware Error]: Error info structure 0:
[ 94.979463] {2}[Hardware Error]: num errors: 3
[ 94.979971] {2}[Hardware Error]: first error captured
[ 94.980523] {2}[Hardware Error]: propagated error captured
[ 94.981110] {2}[Hardware Error]: overflow occurred, error info is incomplete
[ 94.981893] {2}[Hardware Error]: error_type: 0x0006: cache error|TLB error
[ 94.982606] {2}[Hardware Error]: error_info: 0x000000000091000f
[ 94.983249] {2}[Hardware Error]: transaction type: Data Access
[ 94.983891] {2}[Hardware Error]: cache error, operation type: Data write
[ 94.984559] {2}[Hardware Error]: TLB error, operation type: Data write
[ 94.985215] {2}[Hardware Error]: cache level: 2
[ 94.985749] {2}[Hardware Error]: TLB level: 2
[ 94.986277] {2}[Hardware Error]: processor context not corrupted
And the error code is properly decoded according with table N.17 from UEFI 2.10
spec:
[ 94.981893] {2}[Hardware Error]: error_type: 0x0006: cache error|TLB error
Mauro Carvalho Chehab (3):
efi/cper: Adjust infopfx size to accept an extra space
efi/cper: Add a new helper function to print bitmasks
efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs
drivers/acpi/apei/ghes.c | 10 +++---
drivers/firmware/efi/cper-arm.c | 48 ++++++++++++---------------
drivers/firmware/efi/cper.c | 59 +++++++++++++++++++++++++++++++++
include/linux/cper.h | 13 +++++---
4 files changed, 94 insertions(+), 36 deletions(-)
--
2.45.2
