[PATCH] firmware: SDEI: Allow sdei initialization without ACPI_APEI_GHES

[Konrad Dybcio]

On 4/28/25 11:56 AM, Huang Yiwei wrote:
> SDEI usually initialize with the ACPI table, but on platforms where
> ACPI is not used, the SDEI feature can still be used to handle
> specific firmware calls or other customized purposes. Therefore, it
> is not necessary for ARM_SDE_INTERFACE to depend on ACPI_APEI_GHES.
> 
> In commit dc4e8c07e9e2 ("ACPI: APEI: explicit init of HEST and GHES
> in acpi_init()"), to make APEI ready earlier, sdei_init was moved
> into acpi_ghes_init instead of being a standalone initcall, adding
> ACPI_APEI_GHES dependency to ARM_SDE_INTERFACE. This restricts the
> flexibility and usability of SDEI.
> 
> This patch corrects the dependency in Kconfig and allows the
> initialization of SDEI without ACPI_APEI_GHES enabled.
> 
> Fixes: dc4e8c07e9e2 ("ACPI: APEI: explicit init of HEST and GHES in apci_init()")
> Cc: Shuai Xue <xueshuai at linux.alibaba.com>
> Signed-off-by: Huang Yiwei <quic_hyiwei at quicinc.com>
> ---

[...]

> +#ifndef CONFIG_ACPI_APEI_GHES
> +subsys_initcall_sync(sdei_init);

I think it'd be good to leave a comment such as:

/* Initialized by acpi_ghes_init() when ACPI is present */

Konrad