Hi, Tiezhu,
On Wed, Apr 17, 2024 at 6:00 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
>
> When CONFIG_SMP is disabled, mapping won't be created for all cpus.
> CPUs more than num_possible_cpus will be ignored. This is preparation
> for later patch.
This patch makes no sense, don't "fix" anything unless it is broken.
Huacai
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
> ---
> arch/loongarch/kernel/acpi.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
> index 5cf59c617126..ccfa90faf0ea 100644
> --- a/arch/loongarch/kernel/acpi.c
> +++ b/arch/loongarch/kernel/acpi.c
> @@ -98,8 +98,15 @@ acpi_parse_processor(union acpi_subtable_headers *header, const unsigned long en
> return -EINVAL;
>
> acpi_table_print_madt_entry(&header->common);
> +
> + /*
> + * When CONFIG_SMP is disabled, mapping won't be created for all cpus.
> + * CPUs more than num_possible_cpus will be ignored.
> + */
> + if (processor->core_id >= 0 && processor->core_id < num_possible_cpus())
> + acpi_core_pic[processor->core_id] = *processor;
> +
> #ifdef CONFIG_SMP
> - acpi_core_pic[processor->core_id] = *processor;
> set_processor_mask(processor->core_id, processor->flags);
> #endif
>
> --
> 2.42.0
>
>