From: Thomas Gleixner <tglx@linutronix.de>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.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,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCHv2 02/13] kernel/cpu: Add support for declaring CPU offlining not supported
Date: Sat, 28 Oct 2023 16:12:10 +0200 [thread overview]
Message-ID: <87a5s225vp.ffs@tglx> (raw)
In-Reply-To: <20231020151242.1814-3-kirill.shutemov@linux.intel.com>
On Fri, Oct 20 2023 at 18:12, Kirill A. Shutemov wrote:
Subject: cpu/hotplug: ...
> ACPI MADT doesn't allow to offline CPU after it got woke up.
ACPI MADT is a table ...
This is about the MADT mailbox wakeup method, right?
> Currently offlining hotplug prevented based on the confidential
is prevented
> computing attribute which is set for Intel TDX. But TDX is not
> the only possible user of the wake up method.
>
> Introduce cpu_hotplug_not_supported() that can be called to indicate
> that CPU offlining should be disabled.
Otherwise the changes look good!
_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.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,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCHv2 02/13] kernel/cpu: Add support for declaring CPU offlining not supported
Date: Sat, 28 Oct 2023 16:12:10 +0200 [thread overview]
Message-ID: <87a5s225vp.ffs@tglx> (raw)
In-Reply-To: <20231020151242.1814-3-kirill.shutemov@linux.intel.com>
On Fri, Oct 20 2023 at 18:12, Kirill A. Shutemov wrote:
Subject: cpu/hotplug: ...
> ACPI MADT doesn't allow to offline CPU after it got woke up.
ACPI MADT is a table ...
This is about the MADT mailbox wakeup method, right?
> Currently offlining hotplug prevented based on the confidential
is prevented
> computing attribute which is set for Intel TDX. But TDX is not
> the only possible user of the wake up method.
>
> Introduce cpu_hotplug_not_supported() that can be called to indicate
> that CPU offlining should be disabled.
Otherwise the changes look good!
next prev parent reply other threads:[~2023-10-28 14:12 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 15:12 [PATCHv2 00/13] x86/tdx: Add kexec support Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 01/13] x86/acpi: Extract ACPI MADT wakeup code into a separate file Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 17:12 ` Kuppuswamy Sathyanarayanan
2023-10-20 17:12 ` Kuppuswamy Sathyanarayanan
2023-10-20 15:12 ` [PATCHv2 02/13] kernel/cpu: Add support for declaring CPU offlining not supported Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-23 9:30 ` Huang, Kai
2023-10-23 9:30 ` Huang, Kai
2023-10-23 15:31 ` kirill.shutemov
2023-10-23 15:31 ` kirill.shutemov
2023-10-23 22:07 ` Huang, Kai
2023-10-23 22:07 ` Huang, Kai
2023-10-28 14:07 ` Thomas Gleixner
2023-10-28 14:07 ` Thomas Gleixner
2023-10-28 14:12 ` Thomas Gleixner [this message]
2023-10-28 14:12 ` Thomas Gleixner
2023-10-29 14:23 ` Kirill A. Shutemov
2023-10-29 14:23 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 03/13] cpu/hotplug, x86/acpi: Disable CPU offlining for ACPI MADT wakeup Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 04/13] x86/kvm: Do not try to disable kvmclock if it was not enabled Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:32 ` Sean Christopherson
2023-10-20 15:32 ` Sean Christopherson
2023-10-20 15:41 ` Vitaly Kuznetsov
2023-10-20 15:41 ` Vitaly Kuznetsov
2023-10-20 17:07 ` Sean Christopherson
2023-10-20 17:07 ` Sean Christopherson
2023-10-23 8:45 ` Vitaly Kuznetsov
2023-10-23 8:45 ` Vitaly Kuznetsov
2023-10-23 14:40 ` Sean Christopherson
2023-10-23 14:40 ` Sean Christopherson
2023-10-20 15:12 ` [PATCHv2 05/13] x86/kexec: Keep CR4.MCE set during kexec for TDX guest Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 06/13] x86/mm: Make x86_platform.guest.enc_status_change_*() return errno Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 07/13] x86/mm: Return correct level from lookup_address() if pte is none Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 08/13] x86/tdx: Account shared memory Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 09/13] x86/tdx: Convert shared memory back to private on kexec Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 10/13] x86/mm: Make e820_end_ram_pfn() cover E820_TYPE_ACPI ranges Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 11/13] x86/acpi: Do not attempt to bring up secondary CPUs in kexec case Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-24 10:14 ` Huang, Kai
2023-10-24 10:14 ` Huang, Kai
2023-10-24 13:59 ` Kuppuswamy Sathyanarayanan
2023-10-24 13:59 ` Kuppuswamy Sathyanarayanan
2023-10-27 13:01 ` Kirill A. Shutemov
2023-10-20 15:12 ` [PATCHv2 12/13] x86/acpi: Rename fields in acpi_madt_multiproc_wakeup structure Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-24 10:18 ` Huang, Kai
2023-10-24 10:18 ` Huang, Kai
2023-10-24 12:46 ` Kuppuswamy Sathyanarayanan
2023-10-24 12:46 ` Kuppuswamy Sathyanarayanan
2023-10-20 15:12 ` [PATCHv2 13/13] x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method Kirill A. Shutemov
2023-10-20 15:12 ` Kirill A. Shutemov
2023-10-24 10:11 ` Huang, Kai
2023-10-24 10:11 ` Huang, Kai
2023-10-25 3:50 ` Huang, Kai
2023-10-25 3:50 ` Huang, Kai
2023-10-27 11:58 ` kirill.shutemov
2023-10-27 11:58 ` kirill.shutemov
2023-10-29 17:31 ` Thomas Gleixner
2023-10-29 17:31 ` Thomas Gleixner
2023-11-01 13:26 ` Kirill A. Shutemov
2023-11-01 13:26 ` Kirill A. Shutemov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87a5s225vp.ffs@tglx \
--to=tglx@linutronix.de \
--cc=adrian.hunter@intel.com \
--cc=ashish.kalra@amd.com \
--cc=bhe@redhat.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=elena.reshetova@intel.com \
--cc=jun.nakajima@intel.com \
--cc=kai.huang@intel.com \
--cc=kexec@lists.infradead.org \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-coco@lists.linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=rafael@kernel.org \
--cc=rick.p.edgecombe@intel.com \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=seanjc@google.com \
--cc=thomas.lendacky@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.