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From: Tianyu Lan <ltykernel@gmail.com>
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 <Tianyu.Lan@microsoft.com>,
	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> (raw)

From: Tianyu Lan <Tianyu.Lan@microsoft.com>

"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

-- 
2.25.1


             reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 14:49 Tianyu Lan [this message]
2021-04-14 14:49 ` [Resend RFC PATCH V2 01/12] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary " Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 03/12] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan
2021-04-14 15:40   ` Christoph Hellwig
2021-04-15  8:13     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 04/12] HV: Add Write/Read MSR registers via ghcb Tianyu Lan
2021-04-14 15:41   ` Christoph Hellwig
2021-04-15  8:19     ` Tianyu Lan
2021-04-15 18:11   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 05/12] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 06/12] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-04-15 18:52   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 07/12] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-04-15 20:24   ` Konrad Rzeszutek Wilk
2021-04-19  6:36     ` Christoph Hellwig
2021-04-14 14:49 ` [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM Tianyu Lan
2021-04-14 15:42   ` Christoph Hellwig
2021-04-14 15:45   ` Greg KH
2021-04-14 16:17     ` Stephen Hemminger
2021-04-15 12:54       ` Tianyu Lan
2021-04-15 13:09     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 09/12] swiotlb: Add bounce buffer remap address setting function Tianyu Lan
2021-04-15 20:28   ` Konrad Rzeszutek Wilk
2021-04-14 14:49 ` [Resend RFC PATCH V2 10/12] HV/IOMMU: Add Hyper-V dma ops support Tianyu Lan
2021-04-14 15:47   ` Christoph Hellwig
2021-05-12 16:01     ` Tianyu Lan
2021-05-12 17:29       ` Robin Murphy
2021-05-13  3:19       ` Lu Baolu
2021-04-14 14:49 ` [Resend RFC PATCH V2 11/12] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-04-14 15:50   ` Christoph Hellwig
2021-04-15  8:39     ` Tianyu Lan
2021-04-14 14:49 ` [Resend RFC PATCH V2 12/12] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-04-14 15:51   ` Christoph Hellwig

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