linux-kernel - Re: [PATCH RFC v3 04/21] ACPI: processor: Register all CPUs from acpi_processor_get

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Date:   Thu, 14 Dec 2023 17:38:02 +0000
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
CC:     <linux-pm@...r.kernel.org>, <loongarch@...ts.linux.dev>,
        <linux-acpi@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-riscv@...ts.infradead.org>, <kvmarm@...ts.linux.dev>,
        <x86@...nel.org>, <acpica-devel@...ts.linuxfoundation.org>,
        <linux-csky@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-ia64@...r.kernel.org>, <linux-parisc@...r.kernel.org>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        <jianyong.wu@....com>, <justin.he@....com>,
        James Morse <james.morse@....com>
Subject: Re: [PATCH RFC v3 04/21] ACPI: processor: Register all CPUs from
 acpi_processor_get_info()

On Wed, 13 Dec 2023 12:49:31 +0000
Russell King (Oracle) <rmk+kernel@...linux.org.uk> wrote:

> From: James Morse <james.morse@....com>
> 
> To allow ACPI to skip the call to arch_register_cpu() when the _STA
> value indicates the CPU can't be brought online right now, move the
> arch_register_cpu() call into acpi_processor_get_info().
> 
> Systems can still be booted with 'acpi=off', or not include an
> ACPI description at all. For these, the CPUs continue to be
> registered by cpu_dev_register_generic().
> 
> This moves the CPU register logic back to a subsys_initcall(),
> while the memory nodes will have been registered earlier.
> 
> Signed-off-by: James Morse <james.morse@....com>
> Reviewed-by: Gavin Shan <gshan@...hat.com>
> Tested-by: Miguel Luis <miguel.luis@...cle.com>
> Tested-by: Vishnu Pajjuri <vishnu@...amperecomputing.com>
> Tested-by: Jianyong Wu <jianyong.wu@....com>
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
LGTM as well.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>