Re: [PATCH 14/21] x86/topology: Switch over to GENERIC_CPU_DEVICES
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- To: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
- Subject: Re: [PATCH 14/21] x86/topology: Switch over to GENERIC_CPU_DEVICES
- From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
- Date: Thu, 30 Nov 2023 16:56:40 +0000
- Cc: <linux-pm@xxxxxxxxxxxxxxx>, <loongarch@xxxxxxxxxxxxxxx>, <linux-acpi@xxxxxxxxxxxxxxx>, <linux-arch@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, <linux-riscv@xxxxxxxxxxxxxxxxxxx>, <kvmarm@xxxxxxxxxxxxxxx>, <x86@xxxxxxxxxx>, <linux-csky@xxxxxxxxxxxxxxx>, <linux-doc@xxxxxxxxxxxxxxx>, <linux-ia64@xxxxxxxxxxxxxxx>, <linux-parisc@xxxxxxxxxxxxxxx>, Salil Mehta <salil.mehta@xxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, <jianyong.wu@xxxxxxx>, <justin.he@xxxxxxx>, James Morse <james.morse@xxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>
- In-reply-to: <E1r5R3l-00Cszm-UA@rmk-PC.armlinux.org.uk>
- Organization: Huawei Technologies Research and Development (UK) Ltd.
- References: <ZVyz/Ve5pPu8AWoA@shell.armlinux.org.uk> <E1r5R3l-00Cszm-UA@rmk-PC.armlinux.org.uk>
On Tue, 21 Nov 2023 13:45:01 +0000
Russell King <rmk+kernel@xxxxxxxxxxxxxxx> wrote:
> From: James Morse <james.morse@xxxxxxx>
>
> Now that GENERIC_CPU_DEVICES calls arch_register_cpu(), which can be
> overridden by the arch code, switch over to this to allow common code
> to choose when the register_cpu() call is made.
>
> x86's struct cpus come from struct x86_cpu, which has no other members
> or users. Remove this and use the version defined by common code.
>
> This is an intermediate step to the logic being moved to drivers/acpi,
> where GENERIC_CPU_DEVICES will do the work when booting with acpi=off.
>
> This patch also has the effect of moving the registration of CPUs from
> subsys to driver core initialisation, prior to any initcalls running.
>
> Signed-off-by: James Morse <james.morse@xxxxxxx>
> Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>
> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
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