linux-kernel - Re: [PATCH v6 02/10] x86/acpi: Move acpi_wakeup

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Message-ID: <20251027205816.GB14161@ranerica-svr.sc.intel.com>
Date: Mon, 27 Oct 2025 13:58:16 -0700
From: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
To: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Rob Herring <robh@...nel.org>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	Michael Kelley <mhklinux@...look.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Saurabh Sengar <ssengar@...ux.microsoft.com>,
	Chris Oo <cho@...rosoft.com>, "Kirill A. Shutemov" <kas@...nel.org>,
	linux-hyperv@...r.kernel.org, devicetree@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ricardo Neri <ricardo.neri@...el.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Yunhong Jiang <yunhong.jiang@...ux.intel.com>
Subject: Re: [PATCH v6 02/10] x86/acpi: Move acpi_wakeup_cpu() and helpers to
 smpwakeup.c

On Mon, Oct 27, 2025 at 03:18:35PM +0100, Borislav Petkov wrote:
> On Thu, Oct 16, 2025 at 07:57:24PM -0700, Ricardo Neri wrote:
> >  arch/x86/kernel/acpi/madt_wakeup.c | 76 ----------------------------------
> >  arch/x86/kernel/smpwakeup.c        | 83 ++++++++++++++++++++++++++++++++++++++
> 
> How does ACPI-related code belong in the arch/x86/kernel/ hierarchy?
> 
> Not to mention that arch/x86/kernel/ is a dumping ground for everything *and*
> the kitchen sink so we should not put more crap in there...

Right. All the functions in the file start with the acpi_ prefix. It could
be kept under arch/x86/kernel/acpi/. The Kconfig symbol X86_MAILBOX_WAKEUP
would have to live in arch/x86/Kconfig as there is no Kconfig file under
arch/x86/kernel/acpi. ACPI_MADT_WAKEUP is arch/x86/Kconfig.

Does that sound acceptable?

Thank you for your feedback, Boris,

Best,
Ricardo