From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from r3-19.sinamail.sina.com.cn (r3-19.sinamail.sina.com.cn [202.108.3.19]) (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 8A4BB175A5 for ; Sun, 21 Sep 2025 01:47:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758419266; cv=none; b=uH/4dbjm/GjGZTBs9abMnHQbQzz7nSBFppw+ptXy9WsyyhkzmiFWAfHdfVusAA+EFTlCdCnpkFcDSWxPGRKm+VB6N7GS1qr0UKli3AkWoXU9pd5os7xLmZCqkCSFLa/sr2jQHfT/XqN74NAaoTb6ZpZikbyB6mBjiGf8aSB+fsA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758419266; c=relaxed/simple; bh=W1/1lUc/m2HAb6YMrHoo1rlUnLNxczMXhj5+JGxWQVI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZW8ll/ZQlMpfuHJlrKk7P7T6CWuibEoc9EnovwqMCThsx5LCy2r+qmc9bDYpFRfgJ3JlXfx96jVbTf6gvct6MKkwB85lzg5dadXeFB+AAr+3qoBOKqohvg1WxBGTil83CROlGz3gF2ZXv6v0AThhT4r+JyLjFqJSOeXJa3Ap++Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=hlskYpSf; arc=none smtp.client-ip=202.108.3.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="hlskYpSf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1758419261; bh=jeZHzicfmw3ew6bAKKgtPcL7f278bIXpwpqKyaudnJY=; h=From:Subject:Date:Message-ID; b=hlskYpSfxVYnpwyKp2ETYvOUxOppWu8LzS8OIKalcL9EqxcDMq0jz2OGBlaMyEmN5 7y6y4MlJHM+Hw+rs5NDB7v30fDeG6IGOyoUp+5+B/JCMxgLoI9m+Fz5odDW9lbl6n0 ciL0uUCh9RPzj6q+KOpLusJjFraBTr25KCIYaZ1k= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.58.236]) by sina.com (10.54.253.32) with ESMTP id 68CF593300004ADD; Sun, 21 Sep 2025 09:47:32 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 8160464456877 X-SMAIL-UIID: 3064C4316E1D4931B3261C34DB6AA6A4-20250921-094732-1 From: Hillf Danton To: Cong Wang Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC Patch 0/7] kernel: Introduce multikernel architecture support Date: Sun, 21 Sep 2025 09:47:20 +0800 Message-ID: <20250921014721.7323-1-hdanton@sina.com> In-Reply-To: <20250918222607.186488-1-xiyou.wangcong@gmail.com> References: <20250918222607.186488-1-xiyou.wangcong@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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?