[GIT PULL] vhost: fixes, vdpa

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Now that many more architectures build vhost, a couple of these (um, and
arm with deprecated oabi) have reported build failures with randconfig,
however fixes for that need a bit more discussion/testing and will be
merged separately.

Not a regression - these previously simply didn't have vhost at all.
Also, there's some DMA API code in the vdpa simulator is hacky - if no
solution surfaces soon we can always disable it before release:
it's not a big deal either way as it's just test code.

The following changes since commit 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e:

  Linux 5.6-rc7 (2020-03-22 18:31:56 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

for you to fetch changes up to c9b9f5f8c0f3cdb893cb86c168cdaa3aa5ed7278:

  vdpa: move to drivers/vdpa (2020-04-02 10:41:40 -0400)

----------------------------------------------------------------
virtio: fixes, vdpa

Some bug fixes.
Balloon reverted to use the OOM handler again.
The new vdpa subsystem with two first drivers.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

----------------------------------------------------------------
David Hildenbrand (1):
      virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM

Jason Wang (7):
      vhost: refine vhost and vringh kconfig
      vhost: allow per device message handler
      vhost: factor out IOTLB
      vringh: IOTLB support
      vDPA: introduce vDPA bus
      virtio: introduce a vDPA based transport
      vdpasim: vDPA device simulator

Michael S. Tsirkin (2):
      tools/virtio: option to build an out of tree module
      vdpa: move to drivers/vdpa

Tiwei Bie (1):
      vhost: introduce vDPA-based backend

Yuri Benditovich (3):
      virtio-net: Introduce extended RSC feature
      virtio-net: Introduce RSS receive steering feature
      virtio-net: Introduce hash report feature

Zhu Lingshan (1):
      virtio: Intel IFC VF driver for VDPA

 MAINTAINERS                      |   3 +
 arch/arm/kvm/Kconfig             |   2 -
 arch/arm64/kvm/Kconfig           |   2 -
 arch/mips/kvm/Kconfig            |   2 -
 arch/powerpc/kvm/Kconfig         |   2 -
 arch/s390/kvm/Kconfig            |   4 -
 arch/x86/kvm/Kconfig             |   4 -
 drivers/Kconfig                  |   4 +
 drivers/Makefile                 |   1 +
 drivers/misc/mic/Kconfig         |   4 -
 drivers/net/caif/Kconfig         |   4 -
 drivers/vdpa/Kconfig             |  37 ++
 drivers/vdpa/Makefile            |   4 +
 drivers/vdpa/ifcvf/Makefile      |   3 +
 drivers/vdpa/ifcvf/ifcvf_base.c  | 389 +++++++++++++++++
 drivers/vdpa/ifcvf/ifcvf_base.h  | 118 ++++++
 drivers/vdpa/ifcvf/ifcvf_main.c  | 435 +++++++++++++++++++
 drivers/vdpa/vdpa.c              | 180 ++++++++
 drivers/vdpa/vdpa_sim/Makefile   |   2 +
 drivers/vdpa/vdpa_sim/vdpa_sim.c | 629 ++++++++++++++++++++++++++++
 drivers/vhost/Kconfig            |  45 +-
 drivers/vhost/Kconfig.vringh     |   6 -
 drivers/vhost/Makefile           |   6 +
 drivers/vhost/iotlb.c            | 177 ++++++++
 drivers/vhost/net.c              |   5 +-
 drivers/vhost/scsi.c             |   2 +-
 drivers/vhost/vdpa.c             | 883 +++++++++++++++++++++++++++++++++++++++
 drivers/vhost/vhost.c            | 233 ++++-------
 drivers/vhost/vhost.h            |  45 +-
 drivers/vhost/vringh.c           | 421 ++++++++++++++++++-
 drivers/vhost/vsock.c            |   2 +-
 drivers/virtio/Kconfig           |  13 +
 drivers/virtio/Makefile          |   1 +
 drivers/virtio/virtio_balloon.c  | 107 ++---
 drivers/virtio/virtio_vdpa.c     | 396 ++++++++++++++++++
 include/linux/vdpa.h             | 253 +++++++++++
 include/linux/vhost_iotlb.h      |  47 +++
 include/linux/vringh.h           |  36 ++
 include/uapi/linux/vhost.h       |  24 ++
 include/uapi/linux/vhost_types.h |   8 +
 include/uapi/linux/virtio_net.h  | 102 ++++-
 tools/virtio/Makefile            |  27 +-
 42 files changed, 4354 insertions(+), 314 deletions(-)
 create mode 100644 drivers/vdpa/Kconfig
 create mode 100644 drivers/vdpa/Makefile
 create mode 100644 drivers/vdpa/ifcvf/Makefile
 create mode 100644 drivers/vdpa/ifcvf/ifcvf_base.c
 create mode 100644 drivers/vdpa/ifcvf/ifcvf_base.h
 create mode 100644 drivers/vdpa/ifcvf/ifcvf_main.c
 create mode 100644 drivers/vdpa/vdpa.c
 create mode 100644 drivers/vdpa/vdpa_sim/Makefile
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim.c
 delete mode 100644 drivers/vhost/Kconfig.vringh
 create mode 100644 drivers/vhost/iotlb.c
 create mode 100644 drivers/vhost/vdpa.c
 create mode 100644 drivers/virtio/virtio_vdpa.c
 create mode 100644 include/linux/vdpa.h
 create mode 100644 include/linux/vhost_iotlb.h

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