[PATCH v9 00/12] Add ACPI CPER firmware first error injection on ARM emulation

Mauro Carvalho Chehab
2024-08-25T03:47:52Z

This series add support for injecting generic CPER records. Such records
are generated outside QEMU via a provided script.

On this version, patches were reorganized to follow this pattern:

1. Addition of hest_add_le, mapping to the beginning of the HEST
error source structure size. This is the part of the HEST table that
contains the error source IDs to be notified;
2. GHESv2 code rework. It is basically a merge of all changes from v8,
except for GPIO notify, QEMU notifier and renames;
3. cleanups and renames for hw/acpi/ghes.c;
4. GPIO GED device creation logic;
5. Logic to inject errors via QMP;
6. Error injection script

On this version, the logic now better navigates the source IDs,
double-checking them at error injecting time. It is now easier to
add other HEST types if ever needed.

Also, the source ID is now guest-OS specific: ARM will use SEA and GPIO,
but x86 will likely use other notifiers and source IDs. Same will apply
to other processor types.

---

v9:
- Patches reorganized to make easier for reviewers;
- source ID is now guest-OS specific;
- Some patches got a revision history since v8;
- Several minor cleanups.

v8:
- Fix one of the BIOS links that were incorrect;
- Changed mem error internal injection to use a common code;
- No more hardcoded values for CPER: instead of using just the
payload at the QAPI, it now has the full raw CPER there;
- Error injection script now supports changing fields at the
Generic Error Data section of the CPER;
- Several minor cleanups.

v7:
- Change the way offsets are calculated and used on HEST table.
Now, it is compatible with migrations as all offsets are relative
to the HEST table;
- GHES interface is now more generic: the entire CPER is sent via
QMP, instead of just the payload;
- Some code cleanups to make the code more robust;
- The python script now uses QEMUMonitorProtocol class.

v6:
- PNP0C33 device creation moved to aml-build.c;
- acpi_ghes record functions now use ACPI notify parameter,
instead of source ID;
- the number of source IDs is now automatically calculated;
- some code cleanups and function/var renames;
- some fixes and cleanups at the error injection script;
- ghes cper stub now produces an error if cper JSON is not compiled;
- Offset calculation logic for GHES was refactored;
- Updated documentation to reflect the GHES allocated size;
- Added a x-mpidr object for QOM usage;
- Added a patch making usage of x-mpidr field at ARM injection
script;

v5:
- CPER guid is now passing as string;
- raw-data is now passed with base64 encode;
- Removed several GPIO left-overs from arm/virt.c changes;
- Lots of cleanups and improvements at the error injection script.
It now better handles QMP dialog and doesn't print debug messages.
Also, code was split on two modules, to make easier to add more
error injection commands.

v4:
- CPER generation moved to happen outside QEMU;
- One patch adding support for mpidr query was removed.

v3:
- patch 1 cleanups with some comment changes and adding another place where
the poweroff GPIO define should be used. No changes on other patches (except
due to conflict resolution).

v2:
- added a new patch using a define for GPIO power pin;
- patch 2 changed to also use a define for generic error GPIO pin;
- a couple cleanups at patch 2 removing uneeded else clauses.

Example of generating a CPER record:

$ scripts/ghes_inject.py -d arm -p 0xdeadbeef
GUID: e19e3d16-bc11-11e4-9caa-c2051d5d46b0
Generic Error Status Block (20 bytes):
00000000 01 00 00 00 00 00 00 00 00 00 00 00 90 00 00 00 ................
00000010 00 00 00 00 ....

Generic Error Data Entry (72 bytes):
00000000 16 3d 9e e1 11 bc e4 11 9c aa c2 05 1d 5d 46 b0 .=...........]F.
00000010 00 00 00 00 00 03 00 00 48 00 00 00 00 00 00 00 ........H.......
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040 00 00 00 00 00 00 00 00 ........

Payload (72 bytes):
00000000 05 00 00 00 01 00 00 00 48 00 00 00 00 00 00 00 ........H.......
00000010 00 00 00 80 00 00 00 00 10 05 0f 00 00 00 00 00 ................
00000020 00 00 00 00 00 00 00 00 00 20 14 00 02 01 00 03 ......... ......
00000030 0f 00 91 00 00 00 00 00 ef be ad de 00 00 00 00 ................
00000040 ef be ad de 00 00 00 00 ........

Error injected.

[ 9.358364] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1
[ 9.359027] {1}[Hardware Error]: event severity: recoverable
[ 9.359586] {1}[Hardware Error]: Error 0, type: recoverable
[ 9.360124] {1}[Hardware Error]: section_type: ARM processor error
[ 9.360561] {1}[Hardware Error]: MIDR: 0x00000000000f0510
[ 9.361160] {1}[Hardware Error]: Multiprocessor Affinity Register (MPIDR): 0x0000000080000000
[ 9.361643] {1}[Hardware Error]: running state: 0x0
[ 9.362142] {1}[Hardware Error]: Power State Coordination Interface state: 0
[ 9.362682] {1}[Hardware Error]: Error info structure 0:
[ 9.363030] {1}[Hardware Error]: num errors: 2
[ 9.363656] {1}[Hardware Error]: error_type: 0x02: cache error
[ 9.364163] {1}[Hardware Error]: error_info: 0x000000000091000f
[ 9.364834] {1}[Hardware Error]: transaction type: Data Access
[ 9.365599] {1}[Hardware Error]: cache error, operation type: Data write
[ 9.366441] {1}[Hardware Error]: cache level: 2
[ 9.367005] {1}[Hardware Error]: processor context not corrupted
[ 9.367753] {1}[Hardware Error]: physical fault address: 0x00000000deadbeef
[ 9.374267] Memory failure: 0xdeadb: recovery action for free buddy page: Recovered

Such script currently supports arm processor error CPER, but can easily be
extended to other GHES notification types.

Mauro Carvalho Chehab (12):
acpi/ghes: add a firmware file with HEST address
acpi/ghes: rework the logic to handle HEST source ID
acpi/ghes: rename etc/hardware_error file macros
acpi/ghes: better name GHES memory error function
acpi/ghes: add a notifier to notify when error data is ready
acpi/generic_event_device: add an APEI error device
arm/virt: Wire up a GED error device for ACPI / GHES
qapi/acpi-hest: add an interface to do generic CPER error injection
docs: acpi_hest_ghes: fix documentation for CPER size
scripts/ghes_inject: add a script to generate GHES error inject
target/arm: add an experimental mpidr arm cpu property object
scripts/arm_processor_error.py: retrieve mpidr if not filled

MAINTAINERS | 10 +
docs/specs/acpi_hest_ghes.rst | 6 +-
hw/acpi/Kconfig | 5 +
hw/acpi/aml-build.c | 10 +
hw/acpi/generic_event_device.c | 8 +
hw/acpi/ghes-stub.c | 2 +-
hw/acpi/ghes.c | 309 +++++++----
hw/acpi/ghes_cper.c | 32 ++
hw/acpi/ghes_cper_stub.c | 19 +
hw/acpi/meson.build | 2 +
hw/arm/Kconfig | 5 +
hw/arm/virt-acpi-build.c | 12 +-
hw/arm/virt.c | 12 +-
include/hw/acpi/acpi_dev_interface.h | 1 +
include/hw/acpi/aml-build.h | 2 +
include/hw/acpi/generic_event_device.h | 1 +
include/hw/acpi/ghes.h | 28 +-
include/hw/arm/virt.h | 10 +
qapi/acpi-hest.json | 36 ++
qapi/meson.build | 1 +
qapi/qapi-schema.json | 1 +
scripts/arm_processor_error.py | 388 ++++++++++++++
scripts/ghes_inject.py | 51 ++
scripts/qmp_helper.py | 702 +++++++++++++++++++++++++
target/arm/cpu.c | 1 +
target/arm/cpu.h | 1 +
target/arm/helper.c | 10 +-
target/arm/kvm.c | 3 +-
28 files changed, 1539 insertions(+), 129 deletions(-)
create mode 100644 hw/acpi/ghes_cper.c
create mode 100644 hw/acpi/ghes_cper_stub.c
create mode 100644 qapi/acpi-hest.json
create mode 100644 scripts/arm_processor_error.py
create mode 100755 scripts/ghes_inject.py
create mode 100644 scripts/qmp_helper.py

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2.46.0