linux-kernel - Re: [PATCH] arm64/kdump: pass dm-crypt keys to kdump kernel

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Message-ID: <20251227-funky-swallow-from-pluto-910b9d@quoll>
Date: Sat, 27 Dec 2025 14:14:16 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Coiby Xu <coxu@...hat.com>
Cc: kexec@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
	Arnaud Lefebvre <arnaud.lefebvre@...ver-cloud.com>, Baoquan he <bhe@...hat.com>, Dave Young <dyoung@...hat.com>, 
	Kairui Song <ryncsn@...il.com>, Pingfan Liu <kernelfans@...il.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Catalin Marinas <catalin.marinas@....com>, 
	Will Deacon <will@...nel.org>, Rob Herring <robh@...nel.org>, 
	Saravana Kannan <saravanak@...gle.com>, open list <linux-kernel@...r.kernel.org>, 
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" <devicetree@...r.kernel.org>
Subject: Re: [PATCH] arm64/kdump: pass dm-crypt keys to kdump kernel

On Fri, Dec 26, 2025 at 10:11:15PM +0800, Coiby Xu wrote:
> Based on the CONFIG_CRASH_DM_CRYPT feature, this patch adds

Don't use "this patch". See submitting patches.

> LUKS-encrypted device dump target support to ARM64 by addressing two
> challenges [1],


...

> +static void __init early_init_dt_check_for_dmcryptkeys(unsigned long node)
> +{
> +	const __be32 *prop;
> +
> +	if (!IS_ENABLED(CONFIG_CRASH_DM_CRYPT))
> +		return;
> +
> +	pr_debug("Looking for dmcryptkeys property... ");
> +
> +	prop = of_get_flat_dt_prop(node, "linux,dmcryptkeys", NULL);

Where did you document the ABI?


Best regards,
Krzysztof