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x86/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
x86. While at it, add input validation to make the code more robust.

Update Xen-related code to use acpi_get_cpu_uid() instead of the legacy
cpu_acpi_id() function, and remove the now-unused cpu_acpi_id() to clean
up redundant code.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://patch.msgid.link/20260401081640.26875-5-fengchengwen@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Chengwen Feng 2026-04-01 16:16:36 +08:00 • committed by Rafael J. Wysocki
commit 3cfe889f89
5 changed files with 25 additions and 4 deletions
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