linux-kernel - Re: [PATCH] liveupdate: kho: Enable KHO by default

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Message-ID: <aRIwSEF8Y0I6q8Cy@kernel.org>
Date: Mon, 10 Nov 2025 20:34:48 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Pasha Tatashin <pasha.tatashin@...een.com>
Cc: akpm@...ux-foundation.org, graf@...zon.com, pratyush@...nel.org,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	linux-mm@...ck.org
Subject: Re: [PATCH] liveupdate: kho: Enable KHO by default

On Mon, Nov 10, 2025 at 01:07:15PM -0500, Pasha Tatashin wrote:
>
> Subject: [PATCH] liveupdate: kho: Enable KHO by default

No need to put a directory (liveupdate) prefix here. "kho: " is enough.

With that fixed

Reviewed-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

> Upcoming LUO requires KHO for its operations, the requirement to place
> both KHO=on and liveupdate=on becomes redundant. Set KHO to be enabled
> by default.
> 
> Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
> ---
>  kernel/liveupdate/kexec_handover.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/liveupdate/kexec_handover.c b/kernel/liveupdate/kexec_handover.c
> index b54ca665e005..568cd9fe9aca 100644
> --- a/kernel/liveupdate/kexec_handover.c
> +++ b/kernel/liveupdate/kexec_handover.c
> @@ -51,7 +51,7 @@ union kho_page_info {
>  
>  static_assert(sizeof(union kho_page_info) == sizeof(((struct page *)0)->private));
>  
> -static bool kho_enable __ro_after_init;
> +static bool kho_enable __ro_after_init = true;
>  
>  bool kho_is_enabled(void)
>  {
> 
> base-commit: ab40c92c74c6b0c611c89516794502b3a3173966
> -- 
> 2.51.2.1041.gc1ab5b90ca-goog
> 

-- 
Sincerely yours,
Mike.