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=-21.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 8B7B2C64E69 for ; Sat, 21 Nov 2020 00:31:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4EEBA23A65 for ; Sat, 21 Nov 2020 00:31:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="q9oq3fIr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728947AbgKUAaz (ORCPT ); Fri, 20 Nov 2020 19:30:55 -0500 Received: from linux.microsoft.com ([13.77.154.182]:51164 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728175AbgKUAau (ORCPT ); Fri, 20 Nov 2020 19:30:50 -0500 Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 4065820B717A; Fri, 20 Nov 2020 16:30:49 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 4065820B717A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1605918649; bh=qL7T6ATcePrRBnydsz5PapiFX6SEvvtzilsCG4i/l5Q=; h=From:To:Cc:Subject:Date:From; b=q9oq3fIrueZe29lIOTh6gn0AH3XUDhwL2d+5pH1ImHf73gDyOJVyGOjUhHhY1FUbg WhHvjlyV8e4mhkbvKODnxdcl/S64e875joDzwxOmrpa3Ql3tqoHpuKlOQmEqD6i2MF CqT2mqlBgRhJJ3AIPZ22mXp7WOEzK7Eou6Xkl0SY= From: Nuno Das Neves To: linux-hyperv@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, mikelley@microsoft.com, viremana@linux.microsoft.com, sunilmut@microsoft.com, nunodasneves@linux.microsoft.com, wei.liu@kernel.org, ligrassi@microsoft.com, kys@microsoft.com Subject: [RFC PATCH 00/18] Microsoft Hypervisor root partition ioctl interface Date: Fri, 20 Nov 2020 16:30:19 -0800 Message-Id: <1605918637-12192-1-git-send-email-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series provides a userspace interface for creating and running guest virtual machines while running on the Microsoft Hypervisor [0]. Since managing guest machines can only be done when Linux is the root partition, this series depends on the RFC already posted by Wei Liu: https://lore.kernel.org/linux-hyperv/20201105165814.29233-1-wei.liu@kernel.org/T/#t The first two patches provide some helpers for converting hypervisor status codes to linux error codes, and easily printing hypervisor status codes to dmesg for debugging. Hyper-V related headers asm-generic/hyperv-tlfs.h and x86/asm/hyperv-tlfs.h are split into uapi and non-uapi. The uapi versions contain structures used in both the ioctl interface and the kernel. The mshv API is introduced in virt/mshv/mshv_main.c. As each interface is introduced, documentation is added in Documentation/virt/mshv/api.rst. The API is file-desciptor based, like KVM. The entry point is /dev/mshv. /dev/mshv ioctls: MSHV_REQUEST_VERSION MSHV_CREATE_PARTITION Partition (vm) ioctls: MSHV_MAP_GUEST_MEMORY, MSHV_UNMAP_GUEST_MEMORY MSHV_INSTALL_INTERCEPT MSHV_ASSERT_INTERRUPT MSHV_GET_PARTITION_PROPERTY, MSHV_SET_PARTITION_PROPERTY MSHV_CREATE_VP Vp (vcpu) ioctls: MSHV_GET_VP_REGISTERS, MSHV_SET_VP_REGISTERS MSHV_RUN_VP MSHV_GET_VP_STATE, MSHV_SET_VP_STATE mmap() (register page) [0] Hyper-V is more well-known, but it really refers to the whole stack including the hypervisor and other components that run in Windows kernel and userspace. Nuno Das Neves (18): x86/hyperv: convert hyperv statuses to linux error codes asm-generic/hyperv: convert hyperv statuses to strings virt/mshv: minimal mshv module (/dev/mshv/) virt/mshv: request version ioctl virt/mshv: create partition ioctl virt/mshv: create, initialize, finalize, delete partition hypercalls virt/mshv: withdraw memory hypercall virt/mshv: map and unmap guest memory virt/mshv: create vcpu ioctl virt/mshv: get and set vcpu registers ioctls virt/mshv: set up synic pages for intercept messages virt/mshv: run vp ioctl and isr virt/mshv: install intercept ioctl virt/mshv: assert interrupt ioctl virt/mshv: get and set vp state ioctls virt/mshv: mmap vp register page virt/mshv: get and set partition property ioctls virt/mshv: Add enlightenment bits to create partition ioctl .../userspace-api/ioctl/ioctl-number.rst | 2 + Documentation/virt/mshv/api.rst | 173 ++ arch/x86/Kconfig | 2 + arch/x86/hyperv/Kconfig | 22 + arch/x86/hyperv/Makefile | 4 + arch/x86/hyperv/hv_init.c | 2 +- arch/x86/hyperv/hv_proc.c | 40 +- arch/x86/include/asm/hyperv-tlfs.h | 44 +- arch/x86/include/asm/mshyperv.h | 1 + arch/x86/include/uapi/asm/hyperv-tlfs.h | 1312 +++++++++++ arch/x86/kernel/cpu/mshyperv.c | 16 + include/asm-generic/hyperv-tlfs.h | 324 ++- include/asm-generic/mshyperv.h | 3 + include/linux/mshv.h | 61 + include/uapi/asm-generic/hyperv-tlfs.h | 160 ++ include/uapi/linux/mshv.h | 109 + virt/mshv/mshv_main.c | 2054 +++++++++++++++++ 17 files changed, 4178 insertions(+), 151 deletions(-) create mode 100644 Documentation/virt/mshv/api.rst create mode 100644 arch/x86/hyperv/Kconfig create mode 100644 arch/x86/include/uapi/asm/hyperv-tlfs.h create mode 100644 include/linux/mshv.h create mode 100644 include/uapi/asm-generic/hyperv-tlfs.h create mode 100644 include/uapi/linux/mshv.h create mode 100644 virt/mshv/mshv_main.c -- 2.25.1