From patchwork Wed Apr 14 14:49:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 12203067 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 2EA80C43462 for ; Wed, 14 Apr 2021 14:50:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECE2F6120E for ; Wed, 14 Apr 2021 14:50:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349840AbhDNOus (ORCPT ); Wed, 14 Apr 2021 10:50:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237784AbhDNOuq (ORCPT ); Wed, 14 Apr 2021 10:50:46 -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 A7A0AC061756; Wed, 14 Apr 2021 07:50:24 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id w8so7905312plg.9; Wed, 14 Apr 2021 07:50:24 -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=LNgcA9L88xzjpALKOwngs/ZZOUv2+a7fU6REsc6ybGE=; b=Kat+1cK16+lA3fCdvi1QgvBekDwhFQI9zTdR95B/p5DxNaEeytnPDLuc8bIDW4qaNZ 7MpGRgPVZJzbiZWX/2tPApbjldX4DT/yH2etG5/hd1N3IIZI8QH+wVoqgqhWp0lF9zhF CYGHyy10+pifT7vPIU8a1YJKBRRKjCFoFUlwqa0ZYU1zKN1P0MSOE2YG3UYx6CrVAeTs S/3QmZA+TgI/n5i8fooUaW/2BE5mCZdJELj+D7VrR0e2/FBSyNvZpxE7D+wE8EzB8Mu4 JRbfzHGuUKsnRr6MReu4PWeuJtTyvI2ywUjv+b0j2IkcSFIsSs16cK++DMmmd0ZF0Exz D8pA== 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=LNgcA9L88xzjpALKOwngs/ZZOUv2+a7fU6REsc6ybGE=; b=m1ZqPV7969LyKGXgpi49ZNgCF8g1xBuRJi/Cfe0k96iuE5W/jdkAu7h2WYqLShg4gW tA00BNRfJLBAq1ZCDmSkqQXfHZP0tIkAfG/feiZWAayXQUxSV1UUg59NNrhY6FDpUa7f XUuzTnJbMH5/Z8B8a7rSvH7aMohWWpK547/sahONcrv5wc2ZtAWOKWPVaadqcADUSsuC CeUcwIzDTNmnaCNJjPBlWo/3owVaoRPRKPaTVD5ywVfapKET4ZAC+Clw7TYtCyoOgI/9 YStRONSlide5WATncJWlw55HTO1S3wWxOBQU8SgWe9v3X//cqZSblttuAhHCoqAuNaSN TNzQ== X-Gm-Message-State: AOAM533EXra0ETr7af62DPrrAczB17AGdpUPIi4xaLJNn49L7MHlYYBU kAhmogn4HEWpJfmWzZNivF8= X-Google-Smtp-Source: ABdhPJwAcY4DhPfoRZeotqpbll3PUeqlXCvJZF6LQPCij0BG2ENhkips5kIT10gOWWvPvHcpnEMIUA== X-Received: by 2002:a17:902:f687:b029:e8:da63:6195 with SMTP id l7-20020a170902f687b02900e8da636195mr38390847plg.75.1618411824189; Wed, 14 Apr 2021 07:50:24 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:35:ebad:12c1:f579:e332]) by smtp.gmail.com with ESMTPSA id w67sm17732522pgb.87.2021.04.14.07.50.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Apr 2021 07:50:23 -0700 (PDT) From: Tianyu Lan To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: Tianyu Lan , iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.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: [Resend RFC PATCH V2 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Date: Wed, 14 Apr 2021 10:49:33 -0400 Message-Id: <20210414144945.3460554-1-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 "Resend all patches because someone in CC list didn't receive all patchset. Sorry for nosy." 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. Tianyu Lan (12): x86/HV: Initialize GHCB page in Isolation VM x86/HV: Initialize shared memory boundary in 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 UIO/Hyper-V: Not load UIO HV driver in the isolation VM. swiotlb: Add bounce buffer remap address setting function HV/IOMMU: Add Hyper-V dma ops support 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 | 289 +++++++++++++++++++++++++++++ arch/x86/include/asm/hyperv-tlfs.h | 22 +++ arch/x86/include/asm/mshyperv.h | 90 +++++++-- arch/x86/kernel/cpu/mshyperv.c | 5 + arch/x86/kernel/pci-swiotlb.c | 3 +- drivers/hv/channel.c | 44 ++++- drivers/hv/connection.c | 68 ++++++- drivers/hv/hv.c | 73 ++++++-- drivers/hv/hyperv_vmbus.h | 3 + drivers/hv/ring_buffer.c | 83 ++++++--- drivers/hv/vmbus_drv.c | 3 + drivers/iommu/hyperv-iommu.c | 127 +++++++++++++ drivers/net/hyperv/hyperv_net.h | 11 ++ drivers/net/hyperv/netvsc.c | 137 +++++++++++++- drivers/net/hyperv/rndis_filter.c | 3 + drivers/scsi/storvsc_drv.c | 67 ++++++- drivers/uio/uio_hv_generic.c | 5 + include/asm-generic/hyperv-tlfs.h | 1 + include/asm-generic/mshyperv.h | 18 +- include/linux/hyperv.h | 12 +- include/linux/swiotlb.h | 5 + kernel/dma/swiotlb.c | 13 +- mm/ioremap.c | 1 + mm/vmalloc.c | 1 + 26 files changed, 1068 insertions(+), 88 deletions(-) create mode 100644 arch/x86/hyperv/ivm.c