linux-kernel - Re: [PATCHv11 00/19] x86/tdx: Add kexec support

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Date: Tue, 28 May 2024 12:01:32 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"Rafael J. Wysocki" <rafael@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, 
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>, 
	Elena Reshetova <elena.reshetova@...el.com>, Jun Nakajima <jun.nakajima@...el.com>, 
	Rick Edgecombe <rick.p.edgecombe@...el.com>, Tom Lendacky <thomas.lendacky@....com>, 
	"Kalra, Ashish" <ashish.kalra@....com>, Sean Christopherson <seanjc@...gle.com>, 
	"Huang, Kai" <kai.huang@...el.com>, Ard Biesheuvel <ardb@...nel.org>, Baoquan He <bhe@...hat.com>, 
	"H. Peter Anvin" <hpa@...or.com>, "K. Y. Srinivasan" <kys@...rosoft.com>, 
	Haiyang Zhang <haiyangz@...rosoft.com>, kexec@...ts.infradead.org, 
	linux-hyperv@...r.kernel.org, linux-acpi@...r.kernel.org, 
	linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv11 00/19] x86/tdx: Add kexec support

On Tue, May 28, 2024 at 11:55 AM Kirill A. Shutemov
<kirill.shutemov@...ux.intel.com> wrote:
>
> The patchset adds bits and pieces to get kexec (and crashkernel) work on
> TDX guest.
>
> The last patch implements CPU offlining according to the approved ACPI
> spec change poposal[1]. It unlocks kexec with all CPUs visible in the target
> kernel. It requires BIOS-side enabling. If it missing we fallback to booting
> 2nd kernel with single CPU.
>
> Please review. I would be glad for any feedback.
>
> [1] https://lore.kernel.org/all/13356251.uLZWGnKmhe@kreacher

For the ACPI-related changes in the series

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>