Received-SPF: pass (google.com: domain of linux-kernel+bounces-95028-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161;
Date: Thu, 7 Mar 2024 14:57:27 +0800
From: Tao Liu <ltao@redhat.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
	"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
Subject: Re: [PATCHv8 00/17, CORRECTED] x86/tdx: Add kexec support
Message-ID: <ZellV+unyyx6C+et@localhost.localdomain>
References: <20240227212452.3228893-1-kirill.shutemov@linux.intel.com>
 <4iospuc5oxs7vbgm3driasjeyixvgz6yrmym3kzguzngngo7zm@c6ymrw52fn5v>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4iospuc5oxs7vbgm3driasjeyixvgz6yrmym3kzguzngngo7zm@c6ymrw52fn5v>

Hi Kirill,

On Wed, Mar 06, 2024 at 05:02:45PM +0200, Kirill A. Shutemov wrote:
> On Tue, Feb 27, 2024 at 11:24:35PM +0200, Kirill A. Shutemov 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.
> 
> Thomas, Ingo, Borislav, Dave,
> 
> Any feedback?
> 
> Is there anything else I can do to get the patchset moving?
> 
I tested the patchset with Linux 6.8-rc6, no problem found. With the
patchset, a vmcore can be generated successfully in tdx VM and can be
analyzed by crash utility.

Tested-by: Tao Liu <ltao@redhat.com>

Thanks,
Tao Liu

> -- 
>   Kiryl Shutsemau / Kirill A. Shutemov