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From: "Kuppuswamy, Sathyanarayanan"  <sathyanarayanan.kuppuswamy@linux.intel.com>
To: "Mika Penttilä" <mika.penttila@nextfour.com>,
	"Rafael J Wysocki" <rjw@rjwysocki.net>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>,
	"H . Peter Anvin" <hpa@zytor.com>,
	"Peter Zijlstra" <peterz@infradead.org>
Cc: Len Brown <lenb@kernel.org>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	Sean Christopherson <seanjc@google.com>,
	Andi Kleen <ak@linux.intel.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 1/1] x86/acpi, x86/boot: Add multiprocessor wake-up support
Date: Mon, 24 May 2021 06:42:53 -0700	[thread overview]
Message-ID: <0a663bde-c301-d326-2b19-ca52719a5855@linux.intel.com> (raw)
In-Reply-To: <4295dab3-7675-9146-ac6e-244704ecfcca@nextfour.com>



On 5/23/21 11:40 PM, Mika Penttilä wrote:
> 
> So this isn't supporting suspend/resume if AP cannot started again?

Yes. You are correct. It can be used only once per AP. Please find the
spec reference below.

/*
  * According to the ACPI specification r6.4, sec 5.2.12.19, the
  * mailbox-based wakeup mechanism cannot be used more than once
  * for the same CPU, so skip sending wake commands to already
  * awake CPU.
  */

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer

  reply	other threads:[~2021-05-24 13:43 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26  2:39 [PATCH v3 0/3] Add multiprocessor wake-up support Kuppuswamy Sathyanarayanan
2021-04-26  2:39 ` [PATCH v3 1/3] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure Kuppuswamy Sathyanarayanan
2021-04-26  2:39 ` [PATCH v3 2/3] ACPI/table: Print MADT Wake table information Kuppuswamy Sathyanarayanan
2021-04-26  2:39 ` [PATCH v3 3/3] x86/acpi, x86/boot: Add multiprocessor wake-up support Kuppuswamy Sathyanarayanan
2021-05-10 16:32   ` Kuppuswamy, Sathyanarayanan
2021-05-10 16:55     ` Rafael J. Wysocki
2021-05-10 16:55       ` [Devel] " Rafael J. Wysocki
2021-05-10 17:10       ` Kuppuswamy, Sathyanarayanan
2021-05-10 17:22         ` Andi Kleen
2021-05-10 17:24           ` Rafael J. Wysocki
2021-05-10 17:24             ` [Devel] " Rafael J. Wysocki
2021-05-10 21:15             ` Kuppuswamy, Sathyanarayanan
2021-05-11 10:45               ` Rafael J. Wysocki
2021-05-11 10:45                 ` [Devel] " Rafael J. Wysocki
2021-05-13 21:37                 ` [PATCH v4 1/1] " Kuppuswamy Sathyanarayanan
2021-05-21 14:18                   ` Kuppuswamy, Sathyanarayanan
2021-05-21 14:45                   ` Peter Zijlstra
2021-05-21 15:14                     ` Kuppuswamy, Sathyanarayanan
2021-05-24  6:02                       ` [PATCH v5 " Kuppuswamy Sathyanarayanan
2021-05-24  6:40                         ` Mika Penttilä
2021-05-24 13:42                           ` Kuppuswamy, Sathyanarayanan [this message]
2021-05-24 14:51                         ` Rafael J. Wysocki
2021-05-24 15:35                           ` Kuppuswamy, Sathyanarayanan
2021-05-10 17:23         ` [PATCH v3 3/3] " Rafael J. Wysocki
2021-05-10 17:23           ` [Devel] " Rafael J. Wysocki

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