linux-kernel - Re: [PATCH v3 14/14] scripts/ghes_inject: add a script to generate GHES error inject

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Message-ID: <87bjvg6c22.fsf@pond.sub.org>
Date: Wed, 05 Feb 2025 09:16:53 +0100
From: Markus Armbruster <armbru@...hat.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: Igor Mammedov <imammedo@...hat.com>,  "Michael S . Tsirkin"
 <mst@...hat.com>,  Jonathan Cameron <Jonathan.Cameron@...wei.com>,  Shiju
 Jose <shiju.jose@...wei.com>,  qemu-arm@...gnu.org,
  qemu-devel@...gnu.org,  Cleber Rosa <crosa@...hat.com>,  John Snow
 <jsnow@...hat.com>,  linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 14/14] scripts/ghes_inject: add a script to generate
 GHES error inject

Mauro Carvalho Chehab <mchehab+huawei@...nel.org> writes:

> Using the QMP GHESv2 API requires preparing a raw data array
> containing a CPER record.
>
> Add a helper script with subcommands to prepare such data.
>
> Currently, only ARM Processor error CPER record is supported, by
> using:
> 	$ ghes_inject.py arm
>
> which produces those warnings on Linux:
>
> [  705.032426] [Firmware Warn]: GHES: Unhandled processor error type 0x02: cache error
> [  774.866308] {4}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1
> [  774.866583] {4}[Hardware Error]: event severity: recoverable
> [  774.866738] {4}[Hardware Error]:  Error 0, type: recoverable
> [  774.866889] {4}[Hardware Error]:   section_type: ARM processor error
> [  774.867048] {4}[Hardware Error]:   MIDR: 0x00000000000f0510
> [  774.867189] {4}[Hardware Error]:   running state: 0x0
> [  774.867321] {4}[Hardware Error]:   Power State Coordination Interface state: 0
> [  774.867511] {4}[Hardware Error]:   Error info structure 0:
> [  774.867679] {4}[Hardware Error]:   num errors: 2
> [  774.867801] {4}[Hardware Error]:    error_type: 0x02: cache error
> [  774.867962] {4}[Hardware Error]:    error_info: 0x000000000091000f
> [  774.868124] {4}[Hardware Error]:     transaction type: Data Access
> [  774.868280] {4}[Hardware Error]:     cache error, operation type: Data write
> [  774.868465] {4}[Hardware Error]:     cache level: 2
> [  774.868592] {4}[Hardware Error]:     processor context not corrupted
> [  774.868774] [Firmware Warn]: GHES: Unhandled processor error type 0x02: cache error
>
> Such script allows customizing the error data, allowing to change
> all fields at the record. Please use:
>
> 	$ ghes_inject.py arm -h
>
> For more details about its usage.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

[...]

> diff --git a/scripts/arm_processor_error.py b/scripts/arm_processor_error.py
> new file mode 100644
> index 000000000000..b0e8450e667e
> --- /dev/null
> +++ b/scripts/arm_processor_error.py
> @@ -0,0 +1,476 @@
> +#!/usr/bin/env python3
> +#
> +# pylint: disable=C0301,C0114,R0903,R0912,R0913,R0914,R0915,W0511
> +# SPDX-License-Identifier: GPL-2.0

Sorry if this has been answered already...  why not GPL-2.0-or-later?

More of the same below.

[...]