From: Ira Weiny <ira.weiny@intel.com>
To: Zaid Alali <zaidal@os.amperecomputing.com>, <rafael@kernel.org>,
<lenb@kernel.org>, <james.morse@arm.com>, <tony.luck@intel.com>,
<bp@alien8.de>, <kees@kernel.org>, <gustavoars@kernel.org>,
<Jonathan.Cameron@huawei.com>, <sudeep.holla@arm.com>,
<jonathanh@nvidia.com>, <u.kleine-koenig@baylibre.com>,
<dan.carpenter@linaro.org>, <viro@zeniv.linux.org.uk>,
<ira.weiny@intel.com>, <alison.schofield@intel.com>,
<dan.j.williams@intel.com>, <gregkh@linuxfoundation.org>,
<peterz@infradead.org>, <dave.jiang@intel.com>,
<Benjamin.Cheatham@amd.com>, <linux-acpi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-hardening@vger.kernel.org>
Subject: Re: [PATCH v9 4/7] ACPI: APEI: EINJ: Discover EINJv2 parameters
Date: Fri, 13 Jun 2025 11:57:17 -0500 [thread overview]
Message-ID: <684c586dc0268_224888294ae@iweiny-mobl.notmuch> (raw)
In-Reply-To: <20250612231327.84360-5-zaidal@os.amperecomputing.com>
Zaid Alali wrote:
> The EINJv2 set_error_type_with_address structure has a flex array
> to hold the component IDs and syndrome values used when injecting
> multiple errors at once.
>
> Discover the size of this array by taking the address from the
> ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS entry in the EINJ table
> and reading the BIOS copy of the structure.
>
> Derive the maximum number of components from the length field
> in the einjv2_extension_struct at the end of the BIOS copy.
>
> Map the whole of the structure into kernel memory (and unmap
> on module unload).
>
> [Tony: Code unchanged from Zaid's original. New commit message]
>
> Reviewed-by: Tony Luck <tony.luck@intel.com>
> Signed-off-by: Zaid Alali <zaidal@os.amperecomputing.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
[snip]
next prev parent reply other threads:[~2025-06-13 16:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-12 23:13 [PATCH v9 0/7 RESEND] Enable EINJv2 Support Zaid Alali
2025-06-12 23:13 ` [PATCH v9 1/7] ACPI: APEI: EINJ: Fix kernel test sparse warnings Zaid Alali
2025-06-12 23:13 ` [PATCH v9 2/7] ACPI: APEI: EINJ: Enable the discovery of EINJv2 capabilities Zaid Alali
2025-06-13 16:45 ` Ira Weiny
2025-06-12 23:13 ` [PATCH v9 3/7] ACPI: APEI: EINJ: Add einjv2 extension struct Zaid Alali
2025-06-12 23:13 ` [PATCH v9 4/7] ACPI: APEI: EINJ: Discover EINJv2 parameters Zaid Alali
2025-06-13 16:57 ` Ira Weiny [this message]
2025-06-12 23:13 ` [PATCH v9 5/7] ACPI: APEI: EINJ: Create debugfs files to enter device id and syndrome Zaid Alali
2025-06-13 17:21 ` Ira Weiny
2025-06-18 15:21 ` Dan Carpenter
2025-06-18 15:30 ` Luck, Tony
2025-06-18 15:51 ` Dan Carpenter
2025-06-12 23:13 ` [PATCH v9 6/7] ACPI: APEI: EINJ: Enable EINJv2 error injections Zaid Alali
2025-06-13 17:37 ` Ira Weiny
2025-06-16 18:32 ` Zaid Alali
2025-06-12 23:13 ` [PATCH v9 7/7] ACPI: APEI: EINJ: Update the documentation for EINJv2 support Zaid Alali
2025-06-13 17:40 ` Ira Weiny
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