linux-kernel - Re: [PATCH v6 0/7] Support kdump with LUKS encryption by reusing LUKS volume keys

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Message-ID: <ZyhnDBmhvsG2TZ5V@MiWiFi-R3L-srv>
Date: Mon, 4 Nov 2024 14:17:48 +0800
From: Baoquan He <bhe@...hat.com>
To: Coiby Xu <coxu@...hat.com>
Cc: kexec@...ts.infradead.org, Ondrej Kozina <okozina@...hat.com>,
	akpm@...ux-foundation.org, Milan Broz <gmazyland@...il.com>,
	Thomas Staudt <tstaudt@...ibm.com>,
	Daniel P . Berrangé <berrange@...hat.com>,
	Kairui Song <ryncsn@...il.com>,
	Jan Pazdziora <jpazdziora@...hat.com>,
	Pingfan Liu <kernelfans@...il.com>, Dave Young <dyoung@...hat.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Dave Hansen <dave.hansen@...el.com>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v6 0/7] Support kdump with LUKS encryption by reusing
 LUKS volume keys

Hi Coiby,

On 10/29/24 at 01:52pm, Coiby Xu wrote:
> LUKS is the standard for Linux disk encryption, widely adopted by users,
> and in some cases, such as Confidential VMs, it is a requirement. With 
> kdump enabled, when the first kernel crashes, the system can boot into
> the kdump/crash kernel to dump the memory image (i.e., /proc/vmcore) 
> to a specified target. However, there are two challenges when dumping
> vmcore to a LUKS-encrypted device:

I am doing RHEL code rebasing to upstream kernel, will review this next
week.

Thanks
Baoquan