From: Tianyu Lan <ltykernel@gmail.com> To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, 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, Tianyu.Lan@microsoft.com, thomas.lendacky@amd.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com Cc: 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, dave.hansen@intel.com Subject: [PATCH V2 0/6] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Date: Tue, 23 Nov 2021 09:30:31 -0500 [thread overview] Message-ID: <20211123143039.331929-1-ltykernel@gmail.com> (raw) 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. 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(). Change since v1: * Add Hyper-V Isolation support check in the cc_platform_has() and return true for guest memory encrypt attr. * Remove hv isolation check in the sev_setup_arch() Tianyu Lan (6): Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM dma-mapping: Add vmap/vunmap_noncontiguous() callback in dma ops x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() 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/kernel/cc_platform.c | 15 +++ arch/x86/mm/mem_encrypt.c | 1 + 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 | 53 ++++++++- 15 files changed, 482 insertions(+), 41 deletions(-) -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Tianyu Lan <ltykernel@gmail.com> To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, 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, Tianyu.Lan@microsoft.com, thomas.lendacky@amd.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com Cc: parri.andrea@gmail.com, linux-hyperv@vger.kernel.org, brijesh.singh@amd.com, linux-scsi@vger.kernel.org, konrad.wilk@oracle.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dave.hansen@intel.com, iommu@lists.linux-foundation.org, vkuznets@redhat.com Subject: [PATCH V2 0/6] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Date: Tue, 23 Nov 2021 09:30:31 -0500 [thread overview] Message-ID: <20211123143039.331929-1-ltykernel@gmail.com> (raw) 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. 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(). Change since v1: * Add Hyper-V Isolation support check in the cc_platform_has() and return true for guest memory encrypt attr. * Remove hv isolation check in the sev_setup_arch() Tianyu Lan (6): Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM dma-mapping: Add vmap/vunmap_noncontiguous() callback in dma ops x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() 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/kernel/cc_platform.c | 15 +++ arch/x86/mm/mem_encrypt.c | 1 + 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 | 53 ++++++++- 15 files changed, 482 insertions(+), 41 deletions(-) -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next reply other threads:[~2021-11-23 14:30 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-23 14:30 Tianyu Lan [this message] 2021-11-23 14:30 ` [PATCH V2 0/6] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Tianyu Lan 2021-11-23 14:30 ` [PATCH V2 1/6] Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan 2021-11-23 17:15 ` Michael Kelley (LINUX) 2021-11-23 17:15 ` Michael Kelley (LINUX) via iommu 2021-11-24 14:07 ` Tianyu Lan 2021-11-24 14:07 ` Tianyu Lan 2021-11-23 14:30 ` [PATCH V2 2/6] dma-mapping: Add vmap/vunmap_noncontiguous() callback in dma ops Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan 2021-11-23 14:30 ` [PATCH V2 3/6] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan 2021-11-23 14:30 ` [PATCH V2 4/6] hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan 2021-11-23 17:44 ` Michael Kelley (LINUX) 2021-11-23 17:44 ` Michael Kelley (LINUX) via iommu 2021-11-23 14:30 ` [PATCH V2 5/6] net: netvsc: Add Isolation VM support for netvsc driver Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan 2021-11-23 17:55 ` Michael Kelley (LINUX) 2021-11-23 17:55 ` Michael Kelley (LINUX) via iommu 2021-11-24 17:03 ` Michael Kelley (LINUX) 2021-11-24 17:03 ` Michael Kelley (LINUX) via iommu 2021-11-25 21:58 ` Haiyang Zhang via iommu 2021-11-25 21:58 ` Haiyang Zhang 2021-11-23 14:30 ` [PATCH V2 6/6] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan 2021-11-23 14:30 ` Tianyu Lan
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