Re: [PATCH v9 17/19] arm64: Kconfig: Enable hotplug CPU on arm64 if ACPI_PROCESSOR is enabled.

[Gavin Shan]

On 5/1/24 00:24, Jonathan Cameron wrote:
> In order to move arch_register_cpu() to be called via the same path
> for initially present CPUs described by ACPI and hotplugged CPUs
> ACPI_HOTPLUG_CPU needs to be enabled.
>
> The protection against invalid IDs in acpi_map_cpu() is needed as
> at least one production BIOS is in the wild which reports entries
> in DSDT (with no _STA method, so assumed enabled and present)
> that don't match MADT.
>
> Tested-by: Miguel Luis <miguel.luis@xxxxxxxxxx>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
>
> ---
> V9: No change.
>
> ---
>   arch/arm64/Kconfig       |  1 +
>   arch/arm64/kernel/acpi.c | 22 ++++++++++++++++++++++
>   2 files changed, 23 insertions(+)

Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>