Message ID | 20210707153456.3976348-1-ltykernel@gmail.com |
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Headers | show
Return-Path: <linux-scsi-owner@kernel.org> 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=-10.7 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 00BFDC07E9E for <linux-scsi@archiver.kernel.org>; Wed, 7 Jul 2021 15:35:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE801619C6 for <linux-scsi@archiver.kernel.org>; Wed, 7 Jul 2021 15:35:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232296AbhGGPhr (ORCPT <rfc822;linux-scsi@archiver.kernel.org>); Wed, 7 Jul 2021 11:37:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231516AbhGGPhp (ORCPT <rfc822; linux-scsi@vger.kernel.org>); Wed, 7 Jul 2021 11:37:45 -0400 Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 65455C061574; Wed, 7 Jul 2021 08:35:04 -0700 (PDT) Received: by mail-pf1-x436.google.com with SMTP id w22so2508366pff.5; Wed, 07 Jul 2021 08:35:04 -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=jkolUPwi5vmrrny8Lv1Ra8OVYttbBuLIiyALxAjfV3U=; b=uMrytKrdPPAXlONXoKnZbDo6E2aSYBoFVoQVDqkbtkCONIx0wfe5zboS/QgKGbqPlK HS7DtVjHbxLaSrJiY3p/LKmA3t54P4RWelPEkaOkO8stQ7CAdvAy7zQxCEhobAKO24Uc yzBRueqU/xom01Q9hKCy71J3KiVnkJ5uKwhY48+BfUMU4AbwU4AHP4T0qES8oolzCvTS TR/u5P+44atse+4WTf8EAqCmkpOdPJMPQcSu8WGo5Hw7d5AOnMUTkIvh5Nho1JiSvb7Y Ull2Bm5sux8+oXfXdMFGsGaeiQSo5wus3T4DkOI5mIPdsA0acl20F6nCBoK1W6wpKLxn 8ZDA== 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=jkolUPwi5vmrrny8Lv1Ra8OVYttbBuLIiyALxAjfV3U=; b=CUMj9W3aL8lU2QnQkjLQZXa/8d3NKOx8Vh9Bg3H1+ZhelrN2msyf0holaYSdJkWL3c XKPg9559X/e07MfY1rHPQPXYvyVE3w2IIAWMnzbOOzxm71TOBwgxyXsgYAY4/zkYEDCs FhwRjNpfi4RUvlNWx0BdmrR6B6x7w/JQM5Y3LuFwgksJfFqYhSgV/cL7vr+0751X3MR0 7ocE1glg1s6b7C8Aky+2eGDwd0XYo2S6o0gzvxdtTEP+f5FULn65mcL//lyYoXfwbcP3 e/HtssXnGG1deHOl9vDrBn6judlm+G/Vw36eS9ogxHqBQNHi8V87+AavZHMFEBLZNw7x 7qGQ== X-Gm-Message-State: AOAM533yZlmQ26bFPPMC0okqHj6LLmMxubzZ79nC0LNqofszEsNagUlS xWc8t8m/o3sRGbjsgoofSl0= X-Google-Smtp-Source: ABdhPJyD+VDToE/d2GDA5bL79Z5IjrRMQN05lni8aQ82HOiaAKMvr6K+0cHHIUktpTxzsCLuEpzwiw== X-Received: by 2002:a62:5547:0:b029:2ec:8f20:4e2 with SMTP id j68-20020a6255470000b02902ec8f2004e2mr26077347pfb.71.1625672103921; Wed, 07 Jul 2021 08:35:03 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:0:6b7f:cf3e:bbf2:d229]) by smtp.gmail.com with ESMTPSA id y11sm21096877pfo.160.2021.07.07.08.35.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Jul 2021 08:35:03 -0700 (PDT) From: Tianyu Lan <ltykernel@gmail.com> 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, Tianyu.Lan@microsoft.com, rppt@kernel.org, kirill.shutemov@linux.intel.com, akpm@linux-foundation.org, thomas.lendacky@amd.com, ardb@kernel.org, nramas@linux.microsoft.com, robh@kernel.org, keescook@chromium.org, martin.b.radev@gmail.com, pgonda@google.com, hannes@cmpxchg.org, krish.sadhukhan@oracle.com, saravanand@fb.com, xen-devel@lists.xenproject.org, rientjes@google.com, 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, brijesh.singh@amd.com, anparri@microsoft.com Subject: [RFC PATCH V4 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Date: Wed, 7 Jul 2021 11:34:41 -0400 Message-Id: <20210707153456.3976348-1-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-scsi.vger.kernel.org> X-Mailing-List: linux-scsi@vger.kernel.org |
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x86/Hyper-V: Add Hyper-V Isolation VM support
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From: Tianyu Lan <Tianyu.Lan@microsoft.com> 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 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 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 (12): 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 x86/Swiotlb/HV: 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 x86/HV: Not set memory decrypted/encrypted during kexec alloc/free page in IVM arch/x86/hyperv/Makefile | 2 +- arch/x86/hyperv/hv_init.c | 25 +-- arch/x86/hyperv/ivm.c | 299 +++++++++++++++++++++++++++++ arch/x86/include/asm/hyperv-tlfs.h | 18 ++ arch/x86/include/asm/mshyperv.h | 84 +++++++- arch/x86/include/asm/set_memory.h | 2 + arch/x86/include/asm/sev-es.h | 4 + arch/x86/kernel/cpu/mshyperv.c | 5 + arch/x86/kernel/machine_kexec_64.c | 5 +- arch/x86/kernel/sev-es-shared.c | 21 +- arch/x86/mm/pat/set_memory.c | 34 +++- arch/x86/xen/pci-swiotlb-xen.c | 3 +- drivers/hv/Kconfig | 1 + drivers/hv/channel.c | 48 ++++- 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 | 62 ++++++ 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 | 53 ++++- include/linux/hyperv.h | 16 ++ include/linux/swiotlb.h | 4 + kernel/dma/swiotlb.c | 11 +- 29 files changed, 1097 insertions(+), 111 deletions(-) create mode 100644 arch/x86/hyperv/ivm.c