arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval

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As a step towards unifying the interface for retrieving ACPI CPU UID
across architectures, introduce a new function acpi_get_cpu_uid() for
arm64. While at it, add input validation to make the code more robust.

Reimplement get_cpu_for_acpi_id() based on acpi_get_cpu_uid() for
consistency, and move its implementation next to the new function for
code coherence.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://patch.msgid.link/20260401081640.26875-2-fengchengwen@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Chengwen Feng 2026-04-01 16:16:33 +08:00 • committed by Rafael J. Wysocki

parent 591cd656a1

commit 7cd5f5659a

2 changed files with 32 additions and 12 deletions

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14

arch/arm64/include/asm/acpi.h

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30

arch/arm64/kernel/acpi.c

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