From patchwork Sun May 30 15:06:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 12288303 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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 D80A5C47096 for ; Sun, 30 May 2021 15:06:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC1F361241 for ; Sun, 30 May 2021 15:06:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229800AbhE3PIR (ORCPT ); Sun, 30 May 2021 11:08:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229580AbhE3PIQ (ORCPT ); Sun, 30 May 2021 11:08:16 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBB82C061574; Sun, 30 May 2021 08:06:37 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id z4so3926525plg.8; Sun, 30 May 2021 08:06:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FswRSQfjjaKx7u9LgIeEdiIRei+KQQ1o84JB2HXUqUs=; b=LVIdMBZyqnI96Q0Z0mysjEWnSTb1JW5nO8mVMTciG0aK/WD06/PLYNCl5nc+yK0XlS 2WtJh9tLLiNzy5J3OgcTqz2Jd8R+Qo2XZ8PhM1LGbgk34btlpzEZSypPA3XtbSEfna7F 0Xy/ByKjJYToboKNSYv39OSVL+1wl/6lNTlTcOxXyL9Czp3My1t9DZhs63AP25Sxxf87 UAeJF9Q9PWAi/L9NXDXqX7YL7RDddpROE5Dwkr0XfidvpyFaGBUOGxVoC/o97y6s3Bgv uNtBz9O1DqUp24qMiBjYRplPEPbpwBaGprGuV8wqmdUN8j9x5KqKXakb0r59LpirJ6/C y0Cw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FswRSQfjjaKx7u9LgIeEdiIRei+KQQ1o84JB2HXUqUs=; b=G5mXwicbrmByRJIz1oTp8TjQNtS4BUgPXNehUVE5WRUAZgLPfcAGsL5M1j8iBbTcYJ Uy966kRaHtaqzgSllM1FF6jCWjUB7Jvan448yrZe/Fw1L01Z80sGcd9nagkui0WnNFN/ ArJz14Ik0S6W+yeLtvclRs9ZW5pW1hGV77eSzKCEoTeUYVahwM+UmpbicDqbPYAT3khn m9EKhdOIiJo5/zvHpRIorT+7slkWTN9hQvdH1lM6So41fgKiOXASasNgRNKbb3Jq1txf NKOSrkOLqeaphMt2RebpFWmexg7uz4x/Ogx9DgamVElSbcEh+9bSk5TASYRnFYgyluEo NIbQ== X-Gm-Message-State: AOAM530eYRWld/NLsQxmG94CA2Xs/iCtV4C7at6G0m37j+QkoeZxgqx/ 0shp8DjYMCXEIoRvUI/8DsA= X-Google-Smtp-Source: ABdhPJzWgX0reZL8RY1aCiYCdkLb1bxDmfsOiZs5Da5qdPNbLz2+PAq3adwYvehGmjtmOXLHMuRRYw== X-Received: by 2002:a17:90a:fe84:: with SMTP id co4mr14479308pjb.0.1622387197133; Sun, 30 May 2021 08:06:37 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:9:dc2d:80ab:c3f3:1524]) by smtp.gmail.com with ESMTPSA id b15sm8679688pfi.100.2021.05.30.08.06.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 May 2021 08:06:36 -0700 (PDT) From: Tianyu Lan To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, rppt@kernel.org, hannes@cmpxchg.org, cai@lca.pw, krish.sadhukhan@oracle.com, saravanand@fb.com, Tianyu.Lan@microsoft.com, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, joro@8bytes.org, will@kernel.org, xen-devel@lists.xenproject.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com Subject: [RFC PATCH V3 00/11] x86/Hyper-V: Add Hyper-V Isolation VM support Date: Sun, 30 May 2021 11:06:17 -0400 Message-Id: <20210530150628.2063957-1-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Tianyu Lan Hyper-V provides two kinds of Isolation VMs. VBS(Virtualization-based security) and AMD SEV-SNP unenlightened Isolation VMs. This patchset is to add support for these Isolation VM support in Linux. The memory of these vms are encrypted and host can't access guest memory directly. Hyper-V provides new host visibility hvcall and the guest needs to call new hvcall to mark memory visible to host before sharing memory with host. For security, all network/storage stack memory should not be shared with host and so there is bounce buffer requests. Vmbus channel ring buffer already plays bounce buffer role because all data from/to host needs to copy from/to between the ring buffer and IO stack memory. So mark vmbus channel ring buffer visible. There are two exceptions - packets sent by vmbus_sendpacket_ pagebuffer() and vmbus_sendpacket_mpb_desc(). These packets contains IO stack memory address and host will access these memory. So add allocation bounce buffer support in vmbus for these packets. For SNP isolation VM, guest needs to access the shared memory via extra address space which is specified by Hyper-V CPUID HYPERV_CPUID_ ISOLATION_CONFIG. The access physical address of the shared memory should be bounce buffer memory GPA plus with shared_gpa_boundary reported by CPUID. Change since v2: - Remove not UIO driver in Isolation VM patch - Use vmap_pfn() to replace ioremap_page_range function in order to avoid exposing symbol ioremap_page_range() and ioremap_page_range() - Call hv set mem host visibility hvcall in set_memory_encrypted/decrypted() - Enable swiotlb force mode instead of adding Hyper-V dma map/unmap hook - Fix code style Tianyu Lan (11): x86/HV: Initialize GHCB page in Isolation VM x86/HV: Initialize shared memory boundary in the Isolation VM. x86/Hyper-V: Add new hvcall guest address host visibility support HV: Add Write/Read MSR registers via ghcb HV: Add ghcb hvcall support for SNP VM HV/Vmbus: Add SNP support for VMbus channel initiate message HV/Vmbus: Initialize VMbus ring buffer for Isolation VM swiotlb: Add bounce buffer remap address setting function HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM HV/Netvsc: Add Isolation VM support for netvsc driver HV/Storvsc: Add Isolation VM support for storvsc driver arch/x86/hyperv/Makefile | 2 +- arch/x86/hyperv/hv_init.c | 70 +++++-- arch/x86/hyperv/ivm.c | 300 +++++++++++++++++++++++++++++ arch/x86/include/asm/hyperv-tlfs.h | 24 +++ arch/x86/include/asm/mshyperv.h | 85 +++++++- arch/x86/kernel/cpu/mshyperv.c | 5 + arch/x86/mm/pat/set_memory.c | 10 +- arch/x86/xen/pci-swiotlb-xen.c | 3 +- drivers/hv/Kconfig | 1 + drivers/hv/channel.c | 48 ++++- drivers/hv/connection.c | 68 ++++++- drivers/hv/hv.c | 122 ++++++++---- drivers/hv/hyperv_vmbus.h | 3 + drivers/hv/ring_buffer.c | 84 ++++++-- drivers/hv/vmbus_drv.c | 3 + drivers/iommu/hyperv-iommu.c | 81 ++++++++ drivers/net/hyperv/hyperv_net.h | 6 + drivers/net/hyperv/netvsc.c | 125 +++++++++++- drivers/net/hyperv/rndis_filter.c | 3 + drivers/scsi/storvsc_drv.c | 63 +++++- include/asm-generic/hyperv-tlfs.h | 1 + include/asm-generic/mshyperv.h | 18 +- include/linux/hyperv.h | 16 ++ include/linux/swiotlb.h | 5 + kernel/dma/swiotlb.c | 14 +- 25 files changed, 1062 insertions(+), 98 deletions(-) create mode 100644 arch/x86/hyperv/ivm.c