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=-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 8F65BC4338F for ; Mon, 9 Aug 2021 17:56:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73CC960EBB for ; Mon, 9 Aug 2021 17:56:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234911AbhHIR4s (ORCPT ); Mon, 9 Aug 2021 13:56:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232464AbhHIR4p (ORCPT ); Mon, 9 Aug 2021 13:56:45 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62FACC0613D3; Mon, 9 Aug 2021 10:56:24 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id c16so17313000plh.7; Mon, 09 Aug 2021 10:56:24 -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=iMjG88RfqbH3GsgcXA5mv3GuI6oCcG41dDNUrFFXLAQ=; b=EViVv89zPeRqrGYf9LSDfx7ltGQyAh4Avv1iqGXrZVN8IJuT63NhOIxiCyk8Rx6sFQ MnHutJOGM4qObGTB3+2cDbzN4XBxMdUdYKKb4gdQgVYXZpLOwn/LJTBX3yu2AGv1TQf3 gHD7PNproN/353NWNPLbKsHhp8I5TfXCuEG8GTgqdzoTROjdYr7R+QVuJWXGMX3O1nKM RVW2Isxs0xuZHcR/6YqF12JGhSFNL7twyZAqbDPV4zDkbkQQ1mDpob6v3yKEJ83Wgmje DnZ5wIak32lAhxG4fYr8PeZhzjGZR40FVtp2z4KdVrsEgpAFr/Ky4zrJzy/tHZhuJrQU 8oJw== 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=iMjG88RfqbH3GsgcXA5mv3GuI6oCcG41dDNUrFFXLAQ=; b=RraRLUPoY3j9EodXKzepl2u09kx/n0wVJEPmIw+ow7OaRrXbGIVFn7uBCY594ud6JO 8cfWxASx02+p1ZSJwjRAFrm+6uk4KM0XF8KHXX6JGljw/qei0iwMUb4QA9IUkWnUhiu/ fLfhcHYMtEOSOpajBtkrIoVQk3vPVAlesmzjpgad1ZwoRzn0bbh9Gv79O2ifjcYjbk3a pYd1IrwAsaYnQ5v4GNWTvxZ0P30V41zafy4TbrG68eO2tOwM9E9BBwnlsFm/6FhbFYGc oWU6Kihv6ewPN35Muc7Q74WDB6Ph2CQfG1Dm0yxfpJoXSLcWxjGU5HCMKIj66SuD7Z+b 5gZw== X-Gm-Message-State: AOAM532i++4QEo4hG87ag7ne4yqxi09EiOTGX6JKxovPxmAGTDNInWfy b2VGQjIIqV5IItIp0Q1w0kI= X-Google-Smtp-Source: ABdhPJxHfYqFvwoB8xKnP4oxRsbZ9Lzyar+mwb4Rea7hgUEL0NvwGLrtk99GSAXFKwmlrj/fCUWr6A== X-Received: by 2002:a17:90a:e018:: with SMTP id u24mr4349253pjy.126.1628531783941; Mon, 09 Aug 2021 10:56:23 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:2:106e:6ed1:5da1:2ac4]) by smtp.gmail.com with ESMTPSA id x14sm20589708pfa.127.2021.08.09.10.56.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Aug 2021 10:56:23 -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, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, ardb@kernel.org, Tianyu.Lan@microsoft.com, pgonda@google.com, martin.b.radev@gmail.com, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, rppt@kernel.org, sfr@canb.auug.org.au, saravanand@fb.com, krish.sadhukhan@oracle.com, aneesh.kumar@linux.ibm.com, xen-devel@lists.xenproject.org, rientjes@google.com, hannes@cmpxchg.org, tj@kernel.org, michael.h.kelley@microsoft.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, parri.andrea@gmail.com, dave.hansen@intel.com Subject: [PATCH V3 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Date: Mon, 9 Aug 2021 13:56:04 -0400 Message-Id: <20210809175620.720923-1-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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: - Drop x86_set_memory_enc static call and use platform check in the __set_memory_enc_dec() to run platform callback of set memory encrypted or decrypted. Change since V1: - Introduce x86_set_memory_enc static call and so platforms can override __set_memory_enc_dec() with their implementation - Introduce sev_es_ghcb_hv_call_simple() and share code between SEV and Hyper-V code. - Not remap monitor pages in the non-SNP isolation VM - Make swiotlb_init_io_tlb_mem() return error code and return error when dma_map_decrypted() fails. Change since RFC V4: - Introduce dma map decrypted function to remap bounce buffer and provide dma map decrypted ops for platform to hook callback. - Split swiotlb and dma map decrypted change into two patches - Replace vstart with vaddr in swiotlb changes. Change since RFC v3: - Add interface set_memory_decrypted_map() to decrypt memory and map bounce buffer in extra address space - Remove swiotlb remap function and store the remap address returned by set_memory_decrypted_map() in swiotlb mem data structure. - Introduce hv_set_mem_enc() to make code more readable in the __set_memory_enc_dec(). Change since RFC 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 (13): x86/HV: Initialize GHCB page in Isolation VM x86/HV: Initialize shared memory boundary in the Isolation VM. x86/HV: Add new hvcall guest address host visibility support HV: Mark vmbus ring buffer visible to host in Isolation VM HV: Add Write/Read MSR registers via ghcb page 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 DMA: Add dma_map_decrypted/dma_unmap_encrypted() function x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM 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 | 75 ++++++-- arch/x86/hyperv/ivm.c | 295 +++++++++++++++++++++++++++++ arch/x86/include/asm/hyperv-tlfs.h | 20 ++ arch/x86/include/asm/mshyperv.h | 87 ++++++++- arch/x86/include/asm/sev.h | 3 + arch/x86/kernel/cpu/mshyperv.c | 5 + arch/x86/kernel/sev-shared.c | 63 +++--- arch/x86/mm/pat/set_memory.c | 19 +- arch/x86/xen/pci-swiotlb-xen.c | 3 +- drivers/hv/Kconfig | 1 + drivers/hv/channel.c | 54 +++++- drivers/hv/connection.c | 71 ++++++- drivers/hv/hv.c | 129 +++++++++---- drivers/hv/hyperv_vmbus.h | 3 + drivers/hv/ring_buffer.c | 84 ++++++-- drivers/hv/vmbus_drv.c | 3 + drivers/iommu/hyperv-iommu.c | 65 +++++++ drivers/net/hyperv/hyperv_net.h | 6 + drivers/net/hyperv/netvsc.c | 144 +++++++++++++- drivers/net/hyperv/rndis_filter.c | 2 + drivers/scsi/storvsc_drv.c | 68 ++++++- include/asm-generic/hyperv-tlfs.h | 1 + include/asm-generic/mshyperv.h | 54 +++++- include/linux/dma-map-ops.h | 9 + include/linux/hyperv.h | 17 ++ include/linux/swiotlb.h | 4 + kernel/dma/mapping.c | 22 +++ kernel/dma/swiotlb.c | 32 +++- 29 files changed, 1212 insertions(+), 129 deletions(-) create mode 100644 arch/x86/hyperv/ivm.c -- 2.25.1