linux-kernel - Re: [PATCH] kexec: allow KEXEC_HANDOVER to build with COMPILE

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Message-ID: <aYSGQOrYRa9obgST@kernel.org>
Date: Thu, 5 Feb 2026 14:00:00 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Sasha Levin <sashal@...nel.org>
Cc: pasha.tatashin@...een.com, pratyush@...nel.org,
	linux-kernel@...r.kernel.org, surenb@...gle.com
Subject: Re: [PATCH] kexec: allow KEXEC_HANDOVER to build with COMPILE_TEST

On Wed, Feb 04, 2026 at 01:28:16PM -0500, Sasha Levin wrote:
> Currently allmodconfig sets CONFIG_DEFERRED_STRUCT_PAGE_INIT which prevents KHO
> from building.
> 
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  kernel/liveupdate/Kconfig | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/liveupdate/Kconfig b/kernel/liveupdate/Kconfig
> index d2aeaf13c3acb..355b43492b8a4 100644
> --- a/kernel/liveupdate/Kconfig
> +++ b/kernel/liveupdate/Kconfig
> @@ -1,14 +1,14 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  
>  menu "Live Update and Kexec HandOver"
> -	depends on !DEFERRED_STRUCT_PAGE_INIT
> +	depends on !DEFERRED_STRUCT_PAGE_INIT || COMPILE_TEST
>  
>  config KEXEC_HANDOVER
>  	bool "kexec handover"
> -	depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE
> -	depends on !DEFERRED_STRUCT_PAGE_INIT
> +	depends on (ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE) || COMPILE_TEST

I don't think we want to build this for all architectures.
Let's keep depends on ARCH_ as it was.

> +	depends on !DEFERRED_STRUCT_PAGE_INIT || COMPILE_TEST
>  	select MEMBLOCK_KHO_SCRATCH
> -	select KEXEC_FILE
> +	select KEXEC_FILE if ARCH_SUPPORTS_KEXEC_FILE
>  	select LIBFDT
>  	select CMA
>  	help
> -- 
> 2.51.0
> 

-- 
Sincerely yours,
Mike.