linux-kernel - Re: [PATCHv5 16/16] x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method

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Message-ID: <20240116065053.7a6omvqi3jmncppg@box.shutemov.name>
Date: Tue, 16 Jan 2024 09:50:53 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Nikolay Borisov <nik.borisov@...e.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>,
	Elena Reshetova <elena.reshetova@...el.com>,
	Jun Nakajima <jun.nakajima@...el.com>,
	Rick Edgecombe <rick.p.edgecombe@...el.com>,
	Tom Lendacky <thomas.lendacky@....com>,
	"Kalra, Ashish" <ashish.kalra@....com>,
	Sean Christopherson <seanjc@...gle.com>,
	"Huang, Kai" <kai.huang@...el.com>, Baoquan He <bhe@...hat.com>,
	kexec@...ts.infradead.org, linux-coco@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv5 16/16] x86/acpi: Add support for CPU offlining for ACPI
 MADT wakeup method

On Mon, Jan 15, 2024 at 03:19:43PM +0200, Nikolay Borisov wrote:
> > +	/* Switch to identity mapping */
> > +	movq	%rsi, %rax
> > +	movq	%rax, %cr3
> 
> nit: Can't you move directly to cr3

For some reason, I thought I couldn't. Will fix.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov