Subject: Re: [GIT PULL] vhost: fixes, vdpa

From: "Michael S. Tsirkin" <[email-masked]>
Date: Tue, 7 Apr 2020 05:50:31 -0400

On Mon, Apr 06, 2020 at 05:11:28PM -0400, Michael S. Tsirkin wrote:
> 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 <[email-masked]>

OK this was conflicting with akpm tree, turns out Stephen
was reverting the OOM handler change since akpm tree has its own
variant.

So I pushed the revert in my tree to make it easier for you.
I'll send PULL v2 just to make things clear.

> ----------------------------------------------------------------
> 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