From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29DDAC433E9 for ; Thu, 3 Sep 2020 13:58:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE8E820C09 for ; Thu, 3 Sep 2020 13:58:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729007AbgICN6H (ORCPT ); Thu, 3 Sep 2020 09:58:07 -0400 Received: from mga04.intel.com ([192.55.52.120]:34919 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728210AbgICMo7 (ORCPT ); Thu, 3 Sep 2020 08:44:59 -0400 IronPort-SDR: OVaScigQrdfEfn5EiHWtDyNKq//AcC+l3RIEonSKFh2zCcq2fk1k168/So4yvkBZB6ELbegFui B4+Hg7BuWEow== X-IronPort-AV: E=McAfee;i="6000,8403,9732"; a="154965886" X-IronPort-AV: E=Sophos;i="5.76,386,1592895600"; d="scan'208";a="154965886" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Sep 2020 05:42:13 -0700 IronPort-SDR: mmNtBk3skIs2Ek2y0a4q1HlKImu/UADjwjKkL81WCxzOaqFs2z5GYRX73ee+omBmNRabeG8SdX wRm12j528CEA== X-IronPort-AV: E=Sophos;i="5.76,386,1592895600"; d="scan'208";a="478039405" Received: from shsi6026.sh.intel.com (HELO localhost) ([10.239.147.135]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Sep 2020 05:42:10 -0700 From: shuo.a.liu@intel.com To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Greg Kroah-Hartman , "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Sean Christopherson , Yu Wang , Reinette Chatre , Shuo Liu Subject: [PATCH v2 00/17] HSM driver for ACRN hypervisor Date: Thu, 3 Sep 2020 20:41:44 +0800 Message-Id: <20200903124201.17275-1-shuo.a.liu@intel.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shuo Liu ACRN is a Type 1 reference hypervisor stack, running directly on the bare-metal hardware, and is suitable for a variety of IoT and embedded device solutions. ACRN implements a hybrid VMM architecture, using a privileged Service VM. The Service VM manages the system resources (CPU, memory, etc.) and I/O devices of User VMs. Multiple User VMs are supported, with each of them running Linux, Android OS or Windows. Both Service VM and User VMs are guest VM. Below figure shows the architecture. Service VM User VM +----------------------------+ | +------------------+ | +--------------+ | | | | | |ACRN userspace| | | | | | +--------------+ | | | | |-----------------ioctl------| | | | ... |kernel space +----------+ | | | | | | HSM | | | | Drivers | | +----------+ | | | | +--------------------|-------+ | +------------------+ +---------------------hypercall----------------------------------------+ | ACRN Hypervisor | +----------------------------------------------------------------------+ | Hardware | +----------------------------------------------------------------------+ There is only one Service VM which could run Linux as OS. In a typical case, the Service VM will be auto started when ACRN Hypervisor is booted. Then the ACRN userspace (an application running in Service VM) could be used to start/stop User VMs by communicating with ACRN Hypervisor Service Module (HSM). ACRN Hypervisor Service Module (HSM) is a middle layer that allows the ACRN userspace and Service VM OS kernel to communicate with ACRN Hypervisor and manage different User VMs. This middle layer provides the following functionalities, - Issues hypercalls to the hypervisor to manage User VMs: * VM/vCPU management * Memory management * Device passthrough * Interrupts injection - I/O requests handling from User VMs. - Exports ioctl through HSM char device. - Exports function calls for other kernel modules ACRN is focused on embedded system. So it doesn't support some features. E.g., - ACRN doesn't support VM migration. - ACRN doesn't support vCPU migration. This patch set adds the HSM to the Linux kernel. The basic ARCN support was merged to upstream already. https://lore.kernel.org/lkml/1559108037-18813-3-git-send-email-yakui.zhao@intel.com/ ChangeLog: v2: - Removed API version related code. (Dave) - Replaced pr_*() by dev_*(). (Greg) - Used -ENOTTY as the error code of unsupported ioctl. (Greg) Shuo Liu (16): docs: acrn: Introduce ACRN x86/acrn: Introduce acrn_{setup, remove}_intr_handler() x86/acrn: Introduce hypercall interfaces virt: acrn: Introduce ACRN HSM basic driver virt: acrn: Introduce VM management interfaces virt: acrn: Introduce an ioctl to set vCPU registers state virt: acrn: Introduce EPT mapping management virt: acrn: Introduce I/O request management virt: acrn: Introduce PCI configuration space PIO accesses combiner virt: acrn: Introduce interfaces for PCI device passthrough virt: acrn: Introduce interrupt injection interfaces virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor virt: acrn: Introduce I/O ranges operation interfaces virt: acrn: Introduce ioeventfd virt: acrn: Introduce irqfd virt: acrn: Introduce an interface for Service VM to control vCPU Yin Fengwei (1): x86/acrn: Introduce an API to check if a VM is privileged .../userspace-api/ioctl/ioctl-number.rst | 1 + Documentation/virt/acrn/index.rst | 11 + Documentation/virt/acrn/introduction.rst | 40 ++ Documentation/virt/acrn/io-request.rst | 97 +++ Documentation/virt/index.rst | 1 + MAINTAINERS | 9 + arch/x86/include/asm/acrn.h | 74 ++ arch/x86/kernel/cpu/acrn.c | 38 +- drivers/virt/Kconfig | 2 + drivers/virt/Makefile | 1 + drivers/virt/acrn/Kconfig | 15 + drivers/virt/acrn/Makefile | 3 + drivers/virt/acrn/acrn_drv.h | 228 +++++++ drivers/virt/acrn/hsm.c | 427 ++++++++++++ drivers/virt/acrn/hypercall.h | 254 +++++++ drivers/virt/acrn/ioeventfd.c | 276 ++++++++ drivers/virt/acrn/ioreq.c | 645 ++++++++++++++++++ drivers/virt/acrn/irqfd.c | 236 +++++++ drivers/virt/acrn/mm.c | 303 ++++++++ drivers/virt/acrn/vm.c | 121 ++++ include/uapi/linux/acrn.h | 486 +++++++++++++ 21 files changed, 3267 insertions(+), 1 deletion(-) create mode 100644 Documentation/virt/acrn/index.rst create mode 100644 Documentation/virt/acrn/introduction.rst create mode 100644 Documentation/virt/acrn/io-request.rst create mode 100644 arch/x86/include/asm/acrn.h create mode 100644 drivers/virt/acrn/Kconfig create mode 100644 drivers/virt/acrn/Makefile create mode 100644 drivers/virt/acrn/acrn_drv.h create mode 100644 drivers/virt/acrn/hsm.c create mode 100644 drivers/virt/acrn/hypercall.h create mode 100644 drivers/virt/acrn/ioeventfd.c create mode 100644 drivers/virt/acrn/ioreq.c create mode 100644 drivers/virt/acrn/irqfd.c create mode 100644 drivers/virt/acrn/mm.c create mode 100644 drivers/virt/acrn/vm.c create mode 100644 include/uapi/linux/acrn.h base-commit: 18445bf405cb331117bc98427b1ba6f12418ad17 -- 2.28.0