linux-kernel - Re: [PATCH 7/9] kexec_core: Add and update comments regarding the KEXEC

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Message-ID: <CALu+AoS-yTDSOyGcMJ8cG=UujB_N4-neQztxGGv7os6yPqcZrQ@mail.gmail.com>
Date: Fri, 3 Jan 2025 17:24:00 +0800
From: Dave Young <dyoung@...hat.com>
To: David Woodhouse <dwmw2@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, Eric Biederman <ebiederm@...ssion.com>, 
	David Woodhouse <dwmw@...zon.co.uk>, Sourabh Jain <sourabhjain@...ux.ibm.com>, 
	Hari Bathini <hbathini@...ux.ibm.com>, Michael Ellerman <mpe@...erman.id.au>, 
	Thomas Zimmermann <tzimmermann@...e.de>, Andrew Morton <akpm@...ux-foundation.org>, 
	Baoquan He <bhe@...hat.com>, Yuntao Wang <ytcoode@...il.com>, David Kaplan <david.kaplan@....com>, 
	Tao Liu <ltao@...hat.com>, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, 
	Kai Huang <kai.huang@...el.com>, Ard Biesheuvel <ardb@...nel.org>, 
	Josh Poimboeuf <jpoimboe@...nel.org>, Breno Leitao <leitao@...ian.org>, 
	Wei Yang <richard.weiyang@...il.com>, Rong Xu <xur@...gle.com>, 
	Thomas Weißschuh <thomas.weissschuh@...utronix.de>, 
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org, 
	Simon Horman <horms@...nel.org>, Peter Zijlstra <peterz@...radead.org>, bsz@...zon.de, 
	nathan@...nel.org
Subject: Re: [PATCH 7/9] kexec_core: Add and update comments regarding the
 KEXEC_JUMP flow

> diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
> index c0caa14880c3..7cf8437e0f38 100644
> --- a/kernel/kexec_core.c
> +++ b/kernel/kexec_core.c
> @@ -1001,6 +1001,12 @@ int kernel_kexec(void)
>
>  #ifdef CONFIG_KEXEC_JUMP
>         if (kexec_image->preserve_context) {
> +               /*
> +                * This flow is analogous to hibernation flows that occur before
> +                * creating an image and before jumping from the restore kernel
> +                * to the image one, so it uses the same device device callbacks

nitpick: s/device device/device

> +                * as those two flows.
> +                */
>                 pm_prepare_console();
>                 error = freeze_processes();
>                 if (error) {