From: "Kuppuswamy, Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: 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>,
Len Brown <lenb@kernel.org>,
Robert Moore <robert.moore@intel.com>,
Erik Kaneda <erik.kaneda@intel.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
"open list:ACPI COMPONENT ARCHITECTURE (ACPICA)"
<devel@acpica.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v3 3/3] x86/acpi, x86/boot: Add multiprocessor wake-up support
Date: Mon, 10 May 2021 10:10:24 -0700 [thread overview]
Message-ID: <4fa40e7a-bcb2-db0f-8dc5-28728b14377d@linux.intel.com> (raw)
In-Reply-To: <CAJZ5v0gsqyXSr+Kw603333PZ=gnsBizNhyLAcu588OChEHT=AQ@mail.gmail.com>
On 5/10/21 9:55 AM, Rafael J. Wysocki wrote:
> I'm not sure how my comment regarding the fact that for a given CPU
> this function is only usable once has been addressed.
>
> While it may not be a practical concern in the use case that you are
> after (TDX), this is a generic mechanism and it needs to cover other
> possible usage scenarios.
For the same CPU, if we try to use mailbox again, firmware will not
respond to it. So the command will timeout and return error.
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
next prev parent reply other threads:[~2021-05-10 17:10 UTC|newest]
Thread overview: 12+ 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 17:10 ` Kuppuswamy, Sathyanarayanan [this message]
2021-05-10 17:22 ` Andi Kleen
2021-05-10 17:24 ` Rafael J. Wysocki
2021-05-10 21:15 ` Kuppuswamy, Sathyanarayanan
2021-05-11 10:45 ` Rafael J. Wysocki
2021-05-10 17:23 ` Rafael J. Wysocki
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