linux-kernel - Re: [RFC Patch 0/7] kernel: Introduce multikernel architecture support

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Message-ID: <20250921014721.7323-1-hdanton@sina.com>
Date: Sun, 21 Sep 2025 09:47:20 +0800
From: Hillf Danton <hdanton@...a.com>
To: Cong Wang <xiyou.wangcong@...il.com>
Cc: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [RFC Patch 0/7] kernel: Introduce multikernel architecture support

On Thu, 18 Sep 2025 15:25:59 -0700 Cong Wang wrote:
> This patch series introduces multikernel architecture support, enabling
> multiple independent kernel instances to coexist and communicate on a
> single physical machine. Each kernel instance can run on dedicated CPU
> cores while sharing the underlying hardware resources.
> 
> The multikernel architecture provides several key benefits:
> - Improved fault isolation between different workloads
> - Enhanced security through kernel-level separation
> - Better resource utilization than traditional VM (KVM, Xen etc.)
> - Potential zero-down kernel update with KHO (Kernel Hand Over)
>
Could you illustrate a couple of use cases to help understand your idea?