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: [PATCHv7 05/16] x86/kexec: Keep CR4.MCE set during kexec for TDX guest
Date: Thu, 22 Feb 2024 23:04:56 +0100 [thread overview]
Message-ID: <87le7cduk7.ffs@tglx> (raw)
In-Reply-To: <20240212104448.2589568-6-kirill.shutemov@linux.intel.com>
On Mon, Feb 12 2024 at 12:44, Kirill A. Shutemov wrote:
> TDX guests are not allowed to clear CR4.MCE. Attempt to clear it leads
> to #VE.
>
> Use alternatives to keep the flag during kexec for TDX guests.
>
> The change doesn't affect non-TDX-guest environments.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
_______________________________________________
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: [PATCHv7 05/16] x86/kexec: Keep CR4.MCE set during kexec for TDX guest
Date: Thu, 22 Feb 2024 23:04:56 +0100 [thread overview]
Message-ID: <87le7cduk7.ffs@tglx> (raw)
In-Reply-To: <20240212104448.2589568-6-kirill.shutemov@linux.intel.com>
On Mon, Feb 12 2024 at 12:44, Kirill A. Shutemov wrote:
> TDX guests are not allowed to clear CR4.MCE. Attempt to clear it leads
> to #VE.
>
> Use alternatives to keep the flag during kexec for TDX guests.
>
> The change doesn't affect non-TDX-guest environments.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
next prev parent reply other threads:[~2024-02-22 22:05 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-12 10:44 [PATCHv7 00/16] x86/tdx: Add kexec support Kirill A. Shutemov
2024-02-12 10:44 ` [PATCHv7 01/16] x86/acpi: Extract ACPI MADT wakeup code into a separate file Kirill A. Shutemov
2024-02-19 4:45 ` Baoquan He
2024-02-19 4:45 ` Baoquan He
2024-02-19 10:08 ` Kirill A. Shutemov
2024-02-19 10:08 ` Kirill A. Shutemov
2024-02-19 11:36 ` Baoquan He
2024-02-19 11:36 ` Baoquan He
2024-02-23 10:32 ` Thomas Gleixner
2024-02-23 10:32 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 02/16] x86/apic: Mark acpi_mp_wake_* variables as __ro_after_init Kirill A. Shutemov
2024-02-19 4:46 ` Baoquan He
2024-02-19 4:46 ` Baoquan He
2024-02-23 10:31 ` Thomas Gleixner
2024-02-23 10:31 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 03/16] cpu/hotplug: Add support for declaring CPU offlining not supported Kirill A. Shutemov
2024-02-12 10:44 ` [PATCHv7 04/16] cpu/hotplug, x86/acpi: Disable CPU offlining for ACPI MADT wakeup Kirill A. Shutemov
2024-02-12 10:44 ` [PATCHv7 05/16] x86/kexec: Keep CR4.MCE set during kexec for TDX guest Kirill A. Shutemov
2024-02-22 22:04 ` Thomas Gleixner [this message]
2024-02-22 22:04 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 06/16] x86/mm: Make x86_platform.guest.enc_status_change_*() return errno Kirill A. Shutemov
2024-02-23 18:26 ` Dave Hansen
2024-02-23 18:26 ` Dave Hansen
2024-02-12 10:44 ` [PATCHv7 07/16] x86/mm: Return correct level from lookup_address() if pte is none Kirill A. Shutemov
2024-02-19 5:12 ` Baoquan He
2024-02-19 5:12 ` Baoquan He
2024-02-19 13:52 ` Kirill A. Shutemov
2024-02-19 13:52 ` Kirill A. Shutemov
2024-02-20 10:25 ` Baoquan He
2024-02-20 10:25 ` Baoquan He
2024-02-20 12:36 ` Kirill A. Shutemov
2024-02-20 12:36 ` Kirill A. Shutemov
2024-02-21 2:37 ` Baoquan He
2024-02-21 2:37 ` Baoquan He
2024-02-21 14:15 ` Kirill A. Shutemov
2024-02-21 14:15 ` Kirill A. Shutemov
2024-02-22 11:01 ` Baoquan He
2024-02-22 11:01 ` Baoquan He
2024-02-22 14:04 ` Kirill A. Shutemov
2024-02-22 14:04 ` Kirill A. Shutemov
2024-02-22 15:37 ` Baoquan He
2024-02-22 15:37 ` Baoquan He
2024-02-23 18:45 ` Dave Hansen
2024-02-23 18:45 ` Dave Hansen
2024-02-23 18:58 ` Dave Hansen
2024-02-23 18:58 ` Dave Hansen
2024-02-12 10:44 ` [PATCHv7 08/16] x86/tdx: Account shared memory Kirill A. Shutemov
2024-02-23 19:08 ` Dave Hansen
2024-02-23 19:08 ` Dave Hansen
2024-02-25 15:54 ` Kirill A. Shutemov
2024-02-25 15:54 ` Kirill A. Shutemov
2024-02-25 17:34 ` Dave Hansen
2024-02-25 17:34 ` Dave Hansen
2024-02-12 10:44 ` [PATCHv7 09/16] x86/mm: Adding callbacks to prepare encrypted memory for kexec Kirill A. Shutemov
2024-02-12 10:44 ` [PATCHv7 10/16] x86/tdx: Convert shared memory back to private on kexec Kirill A. Shutemov
2024-02-23 19:39 ` Dave Hansen
2024-02-23 19:39 ` Dave Hansen
2024-02-25 14:58 ` Kirill A. Shutemov
2024-02-25 14:58 ` Kirill A. Shutemov
2024-02-26 13:10 ` Kirill A. Shutemov
2024-02-26 13:10 ` Kirill A. Shutemov
2024-02-26 13:58 ` Dave Hansen
2024-02-26 13:58 ` Dave Hansen
2024-02-12 10:44 ` [PATCHv7 11/16] x86/mm: Make e820_end_ram_pfn() cover E820_TYPE_ACPI ranges Kirill A. Shutemov
2024-02-23 19:41 ` Dave Hansen
2024-02-23 19:41 ` Dave Hansen
2024-02-12 10:44 ` [PATCHv7 12/16] x86/acpi: Rename fields in acpi_madt_multiproc_wakeup structure Kirill A. Shutemov
2024-02-23 10:27 ` Thomas Gleixner
2024-02-23 10:27 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 13/16] x86/acpi: Do not attempt to bring up secondary CPUs in kexec case Kirill A. Shutemov
2024-02-23 10:28 ` Thomas Gleixner
2024-02-23 10:28 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 14/16] x86/smp: Add smp_ops.stop_this_cpu() callback Kirill A. Shutemov
2024-02-23 10:26 ` Thomas Gleixner
2024-02-23 10:26 ` Thomas Gleixner
2024-02-12 10:44 ` [PATCHv7 15/16] x86/mm: Introduce kernel_ident_mapping_free() Kirill A. Shutemov
2024-02-12 10:44 ` [PATCHv7 16/16] x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method Kirill A. Shutemov
2024-02-23 10:31 ` Thomas Gleixner
2024-02-23 10:31 ` Thomas Gleixner
2024-02-20 1:18 ` [PATCH 0/2] x86/snp: Add kexec support Ashish Kalra
2024-02-20 1:18 ` Ashish Kalra
2024-02-20 1:18 ` [PATCH 1/2] x86/mm: Do not zap PMD entry mapping unaccepted memory table during kdump Ashish Kalra
2024-02-20 1:18 ` Ashish Kalra
2024-02-20 12:42 ` Kirill A. Shutemov
2024-02-20 12:42 ` Kirill A. Shutemov
2024-02-20 19:09 ` Kalra, Ashish
2024-02-20 19:09 ` Kalra, Ashish
2024-02-20 1:18 ` [PATCH 2/2] x86/snp: Convert shared memory back to private on kexec Ashish Kalra
2024-02-20 1:18 ` Ashish Kalra
2024-02-21 20:35 ` Tom Lendacky
2024-02-21 20:35 ` Tom Lendacky
2024-02-22 10:50 ` Kirill A. Shutemov
2024-02-22 10:50 ` Kirill A. Shutemov
2024-02-22 13:58 ` Tom Lendacky
2024-02-22 13:58 ` Tom Lendacky
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=87le7cduk7.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.