From patchwork Tue Nov 16 15:39:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 12622703 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99468C433FE for ; Tue, 16 Nov 2021 15:39:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84F9F60EE0 for ; Tue, 16 Nov 2021 15:39:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238375AbhKPPm1 (ORCPT ); Tue, 16 Nov 2021 10:42:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234959AbhKPPm1 (ORCPT ); Tue, 16 Nov 2021 10:42:27 -0500 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9524C061570; Tue, 16 Nov 2021 07:39:29 -0800 (PST) Received: by mail-pg1-x534.google.com with SMTP id 200so17965232pga.1; Tue, 16 Nov 2021 07:39:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ytk8p6TdYJp6Y0bV41yrFTfo+pk8rHAune+7pZw0P98=; b=BXz0KFtLleSQa3skiYw7QDE1dXPqvkgmZsVeu4fLM5Yo+p5BS9ZqK8GmlqMk8KB2Jd MbFA1Sdyl8HeuFhTjRLnnl3I6jVDF41fuFlW3H6A+W4gc2Uds+KPsc9KT7JcuhVGbq/t XAcYRH7ZrHrS/7eajwuW1ku+LBiQ4Qc+oXHnk0LQfeobjP2mtKBjazQ5Ojyz1ZP9PGUs KqRxaCIQx43OP4enShtmT5F7s37Tk9u+0bvcviYRxBqU7AdqBL5xPuBzLRr/J69QC52x 9+z78bSAAsg3A9UtUTA6eQyj+jhqQGR/7QgyARigUS1/lv1vKxm9S0dnSLpOzn5YgjJU DsLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ytk8p6TdYJp6Y0bV41yrFTfo+pk8rHAune+7pZw0P98=; b=ZLcVKwGnspGtceEcGpeDPJORKyliPJ8hDKkWE6QOk83DiNWKS2u3lcWwHsROLptgum WnjYWp50EUZPlL1NUrIGoR/9quP6r5IFzkAqFskWkiOn6fye1K94OGlqHI1j3tuyu5HG uxRI48W06U4qj2JC5yPoA0WfSHG7SCLr0rDJqqzZZch9jLK4JpLpG6dy0nAcs3y6rucL /ueYqGd8NtysaA/qrnDnbTADPSqxKE91YLXK4AkvCNPpdkkLYFIQcbC8QmHOmvyYDrc3 6taKyo+hcvfqPrqNF0c11q9RFpD3zA9OhU5n225wC/hswbcB1J+i+ABiZShD3BP+2C1q CA/g== X-Gm-Message-State: AOAM5317EGmJMaLbcPRnyWezQ1Im0Kfcsps9EULUV0YJQ61aH8r30vUw mCupLe2IqLsgnd4y7qiJDjI= X-Google-Smtp-Source: ABdhPJwz59YenP80sWYPo5tTasO7qod/XFwabISMwdQ71s0CE7pvGan1FvjN3qeawYe/WCw9pDZXgA== X-Received: by 2002:a62:5215:0:b0:49f:a996:b724 with SMTP id g21-20020a625215000000b0049fa996b724mr40917927pfb.3.1637077166648; Tue, 16 Nov 2021 07:39:26 -0800 (PST) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:3:57e4:b776:c854:76dd]) by smtp.gmail.com with ESMTPSA id x64sm1981948pfd.151.2021.11.16.07.39.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Nov 2021 07:39:25 -0800 (PST) From: Tianyu Lan To: dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, jgross@suse.com, sstabellini@kernel.org, boris.ostrovsky@oracle.com, kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com Cc: Tianyu Lan , iommu@lists.linux-foundation.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, konrad.wilk@oracle.com, parri.andrea@gmail.com, thomas.lendacky@amd.com, dave.hansen@intel.com Subject: [PATCH 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Date: Tue, 16 Nov 2021 10:39:18 -0500 Message-Id: <20211116153923.196763-1-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@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. 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. This patchset is to enable swiotlb bounce buffer for netvsc/storvsc in Isolation VM. Add Hyper-V dma ops and provide dma_alloc/free_ noncontiguous and vmap/vunmap_noncontiguous callback. Allocate rx/tx ring via dma_alloc_noncontiguous() and map them into extra address space via dma_vmap_noncontiguous(). Tianyu Lan (5): x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM dma-mapping: Add vmap/vunmap_noncontiguous() callback in dma ops hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM net: netvsc: Add Isolation VM support for netvsc driver scsi: storvsc: Add Isolation VM support for storvsc driver arch/x86/mm/mem_encrypt.c | 4 +- arch/x86/xen/pci-swiotlb-xen.c | 3 +- drivers/hv/Kconfig | 1 + drivers/hv/vmbus_drv.c | 6 + drivers/iommu/hyperv-iommu.c | 164 +++++++++++++++++++++++++ drivers/net/hyperv/hyperv_net.h | 5 + drivers/net/hyperv/netvsc.c | 192 +++++++++++++++++++++++++++--- drivers/net/hyperv/rndis_filter.c | 2 + drivers/scsi/storvsc_drv.c | 37 +++--- include/linux/dma-map-ops.h | 3 + include/linux/hyperv.h | 17 +++ include/linux/swiotlb.h | 6 + kernel/dma/mapping.c | 18 ++- kernel/dma/swiotlb.c | 75 ++++++++++-- 14 files changed, 488 insertions(+), 45 deletions(-)