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

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Message-ID: <CAJuCfpGFJg2gvct0Uutm3=FbdG6RKzfki8KFTYaLtXJjE_VCeg@mail.gmail.com>
Date: Wed, 4 Feb 2026 14:32:51 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: Sasha Levin <sashal@...nel.org>
Cc: pasha.tatashin@...een.com, rppt@...nel.org, pratyush@...nel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kexec: allow KEXEC_HANDOVER to build with COMPILE_TEST

On Wed, Feb 4, 2026 at 10:28 AM Sasha Levin <sashal@...nel.org> wrote:
>
> Currently allmodconfig sets CONFIG_DEFERRED_STRUCT_PAGE_INIT which prevents KHO
> from building.
>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

Ok, now allmodconfig enables CONFIG_KEXEC_HANDOVER and I can see the
breakage Greg was talking about in
https://lore.kernel.org/all/2026020419-extortion-swinging-6394@gregkh/

Tested-by: Suren Baghdasaryan <surenb@...gle.com>

> ---
>  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
> +       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
>