From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C7BBCE552 for ; Mon, 4 Nov 2024 06:17:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730701082; cv=none; b=rD7AJzD1iOWVSdWVZMw0PoCT2UtXWl2AkZcK/WDj7sBgR4kn3eT158KCDX6BV90RrgHsn9KDG5Uj48A566tjAaxrlFSwwMFCrLDSYQk1nkExDR46nFkirYhc8mAqRvQGa44FtmTiOGw/wmk3CpE6yOv3ToOCZ/JYSqBbHWjfErE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730701082; c=relaxed/simple; bh=+p10IWtB1sSrA9yYFxJ5xn0FXS5OrAz3GX32mwmGlV0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bzhOAqa+aBy/oqrKqpE227vXT6Ad8OgxFY7E8a3yvEgvzJTI8THL5JfoEcz8ARnsn+cDUHeb4QFfTNNZpxTrTGcB1/0PV+qX4o3Cf6AUC2zgsH92/aWAkbh1rTs5/Bo+ZCwrxV0AUwlrsWmMgl0HgzwttTyVdE0ojkj2X4+Vyuo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=YKlR3aGc; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="YKlR3aGc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730701078; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Do/2TiELOGIeqU3m4GK74cp6r6SIjB0QSr9SYGDc+Tc=; b=YKlR3aGc7hkVjYt/RGgYP4jqvaKMpwV4mp5SCaMo9/63RO07q9w0aoVi6RU0nNIo8LRBWn A3n22N6cJLrT60ogTFdZIvnbZD9lTX0bUJetXgvE11cMIq5RbNbYyvDWfYwaM27UcYf5PE oh0L9YBjVZgjCm2IQfX/F8Wenk/XXWc= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-533-2cIPdUKtPMy9hOiHaNGHWw-1; Mon, 04 Nov 2024 01:17:57 -0500 X-MC-Unique: 2cIPdUKtPMy9hOiHaNGHWw-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 7F5A11955EE9; Mon, 4 Nov 2024 06:17:55 +0000 (UTC) Received: from localhost (unknown [10.72.112.78]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id BF30719560AD; Mon, 4 Nov 2024 06:17:52 +0000 (UTC) Date: Mon, 4 Nov 2024 14:17:48 +0800 From: Baoquan He To: Coiby Xu Cc: kexec@lists.infradead.org, Ondrej Kozina , akpm@linux-foundation.org, Milan Broz , Thomas Staudt , Daniel P =?iso-8859-1?Q?=2E_Berrang=E9?= , Kairui Song , Jan Pazdziora , Pingfan Liu , Dave Young , linux-kernel@vger.kernel.org, x86@kernel.org, Dave Hansen , Vitaly Kuznetsov , Greg KH Subject: Re: [PATCH v6 0/7] Support kdump with LUKS encryption by reusing LUKS volume keys Message-ID: References: <20241029055223.210039-1-coxu@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241029055223.210039-1-coxu@redhat.com> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 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