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Date: Sat, 27 Jan 2024 21:35:41 +0200
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: 
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, 
	Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org, 
	"Rafael J. Wysocki" <rafael@kernel.org>, Peter Zijlstra <peterz@infradead.org>, 
	Adrian Hunter <adrian.hunter@intel.com>, Elena Reshetova <elena.reshetova@intel.com>, 
	Jun Nakajima <jun.nakajima@intel.com>, Rick Edgecombe <rick.p.edgecombe@intel.com>, 
	Tom Lendacky <thomas.lendacky@amd.com>, "Kalra, Ashish" <ashish.kalra@amd.com>, 
	Sean Christopherson <seanjc@google.com>, "Huang, Kai" <kai.huang@intel.com>, Baoquan He <bhe@redhat.com>, 
	kexec@lists.infradead.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv6 16/16] x86/acpi: Add support for CPU offlining for ACPI
 MADT wakeup method
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 <4aa2c961-a0dc-45dc-b996-57c8468660df@linux.intel.com>
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On Fri, Jan 26, 2024 at 12:03:14PM -0800, Kuppuswamy Sathyanarayanan wrote:
> > +	/* Don't wait longer than a second. */
> > +	timeout = USEC_PER_SEC;
> > +	while (READ_ONCE(acpi_mp_wake_mailbox->command) && --timeout)
> > +		udelay(1);
> > +
> > +	if (!timeout)
> Nit: IMO, since you are dumping failure error message (not timeout
> message), you can use non zero acpi_mp_wake_mailbox->command
> check. But it is up to you.

I think my version is pretty idiomatic. The same pattern used in other
places. For instance, test_nmi_ipi().
-- 
  Kiryl Shutsemau / Kirill A. Shutemov