linux-kernel - Re: [PATCH 4/6] kho: Introduce KHO FDT ABI header

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Message-ID: <CA+CK2bCB+n5hK9SpMewWURU75a8sY3BJz=MEu_Zy1KwU4Kr5Tg@mail.gmail.com>
Date: Thu, 22 Jan 2026 13:29:27 -0500
From: Pasha Tatashin <pasha.tatashin@...een.com>
To: Mike Rapoport <rppt@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Alexander Graf <graf@...zon.com>, 
	Jason Miu <jasonmiu@...gle.com>, Jonathan Corbet <corbet@....net>, 
	Pratyush Yadav <pratyush@...nel.org>, kexec@...ts.infradead.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 4/6] kho: Introduce KHO FDT ABI header

On Mon, Jan 5, 2026 at 11:58 AM Mike Rapoport <rppt@...nel.org> wrote:
>
> From: Jason Miu <jasonmiu@...gle.com>
>
> Introduce the `include/linux/kho/abi/kexec_handover.h` header file,
> which defines the stable ABI for the KHO mechanism. This header specifies
> how preserved data is passed between kernels using an FDT.
>
> The ABI contract includes the FDT structure, node properties, and the
> "kho-v1" compatible string. By centralizing these definitions, this
> header serves as the foundational agreement for inter-kernel
> communication of preserved states, ensuring forward compatibility and
> preventing misinterpretation of data across kexec transitions.
>
> Since the ABI definitions are now centralized in the header files, the
> YAML files that previously described the FDT interfaces are
> redundant. These redundant files have therefore been removed.
>
> Signed-off-by: Jason Miu <jasonmiu@...gle.com>
> Co-developed-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
> Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

Reviewed-by: Pasha Tatashin <pasha.tatashin@...een.com>