linux-kernel - Re: [PATCH v5 05/22] liveupdate: kho: when live update add KHO image during kexec load

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Message-ID: <aRHe3syRvOrCYC9u@kernel.org>
Date: Mon, 10 Nov 2025 14:47:26 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Pasha Tatashin <pasha.tatashin@...een.com>
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Subject: Re: [PATCH v5 05/22] liveupdate: kho: when live update add KHO image
 during kexec load

On Fri, Nov 07, 2025 at 04:03:03PM -0500, Pasha Tatashin wrote:
> In case KHO is driven from within kernel via live update, finalize will
> always happen during reboot, so add the KHO image unconditionally.
> 
> Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
> ---
>  kernel/liveupdate/kexec_handover.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/kernel/liveupdate/kexec_handover.c b/kernel/liveupdate/kexec_handover.c
> index 9f0913e101be..b54ca665e005 100644
> --- a/kernel/liveupdate/kexec_handover.c
> +++ b/kernel/liveupdate/kexec_handover.c
> @@ -15,6 +15,7 @@
>  #include <linux/kexec_handover.h>
>  #include <linux/libfdt.h>
>  #include <linux/list.h>
> +#include <linux/liveupdate.h>
>  #include <linux/memblock.h>
>  #include <linux/page-isolation.h>
>  #include <linux/vmalloc.h>
> @@ -1489,7 +1490,7 @@ int kho_fill_kimage(struct kimage *image)
>  	int err = 0;
>  	struct kexec_buf scratch;
>  
> -	if (!kho_out.finalized)
> +	if (!kho_out.finalized && !liveupdate_enabled())
>  		return 0;

This feels backwards, I don't think KHO should call liveupdate methods.
  
>  	image->kho.fdt = virt_to_phys(kho_out.fdt);
> -- 
> 2.51.2.1041.gc1ab5b90ca-goog
> 

-- 
Sincerely yours,
Mike.