Re: [dpdk-dev] [PATCH 00/16] [RFC] [VFIO] Add VFIO support to DPDK

[Stephen Hemminger <stephen@networkplumber.org>]

On Thu, 1 May 2014 11:05:38 +0000
"Burakov, Anatoly" <anatoly.burakov@intel.com> wrote:

> This patchset adds support for using VFIO instead of IGB_UIO to
> map the device BARs.
> 
> VFIO is a kernel 3.6+ driver allowing secure DMA from userspace
> by means of using IOMMU instead of working directly with physical
> memory like igb_uio does.
> 
> Short summary:
> * Adding support for VFIO in EAL PCI code
> * Adding new command-line parameter for VFIO interrupt type
> * Adding support for VFIO in setup.sh
> * Renaming igb_uio_bind to dpdk_nic_bind and adding support for
>   VFIO there
> * Removing PCI ID list from igb_uio, effectively making it another
>   generic PCI driver similar to pci_stub, vfio-pci et al
> * Adding autotest for VFIO interrupt types
> * Making igb_uio and VFIO compilation optional
> 
> I'm submitting this as an RFC because this patch is based off
> current dpdk.org branch with David Marchand's RTE_EAL_UNBIND_PORTS
> patchset. IOW, this will *not* apply to the dpdk.org tree *unless* you
> also apply David's patches beforehand.
> 
> Signed-off by: Anatoly Burakov <anatoly.burakov@intel.com>
> 
> Anatoly Burakov (16):
>   Separate igb_uio mapping into a separate file
>   Distinguish between legitimate failures and non-fatal errors
>   Rename RTE_PCI_DRV_NEED_IGB_UIO to RTE_PCI_DRV_NEED_MAPPING
>   Make igb_uio compilation optional
>   Moved interrupt type out of igb_uio
>   Add support for VFIO in Linuxapp targets
>   Add support for VFIO interrupts, add VFIO header
>   Add support for mapping devices through VFIO.
>   Enable VFIO device binding
>   Added support for selecting VFIO interrupt type from EAL command-line
>   Make --no-huge use mmap instead of malloc.
>   Adding unit tests for VFIO EAL command-line parameter
>   Removed PCI ID table from igb_uio
>   Renamed igb_uio_bind to dpdk_nic_bind
>   Added support for VFIO drivers in dpdk_nic_bind.py
>   Adding support for VFIO to setup.sh
> 
>  app/test/test_eal_flags.c                          |  24 +
>  app/test/test_pci.c                                |   4 +-
>  config/defconfig_i686-default-linuxapp-gcc         |   2 +
>  config/defconfig_i686-default-linuxapp-icc         |   2 +
>  config/defconfig_x86_64-default-linuxapp-gcc       |   2 +
>  config/defconfig_x86_64-default-linuxapp-icc       |   2 +
>  lib/librte_eal/bsdapp/eal/eal_pci.c                |   2 +-
>  lib/librte_eal/common/Makefile                     |   1 +
>  lib/librte_eal/common/eal_common_pci.c             |  17 +-
>  lib/librte_eal/common/include/rte_pci.h            |   7 +-
>  .../common/include/rte_pci_dev_feature_defs.h      |  46 ++
>  .../common/include/rte_pci_dev_features.h          |  42 ++
>  lib/librte_eal/linuxapp/Makefile                   |   2 +
>  lib/librte_eal/linuxapp/eal/Makefile               |   6 +-
>  lib/librte_eal/linuxapp/eal/eal.c                  |  35 +
>  lib/librte_eal/linuxapp/eal/eal_interrupts.c       | 203 +++++-
>  lib/librte_eal/linuxapp/eal/eal_memory.c           |   8 +-
>  lib/librte_eal/linuxapp/eal/eal_pci.c              | 480 ++------------
>  lib/librte_eal/linuxapp/eal/eal_pci_uio.c          | 416 ++++++++++++
>  lib/librte_eal/linuxapp/eal/eal_pci_vfio.c         | 709 +++++++++++++++++++++
>  lib/librte_eal/linuxapp/eal/eal_pci_vfio_socket.c  | 367 +++++++++++
>  .../linuxapp/eal/include/eal_internal_cfg.h        |   3 +
>  lib/librte_eal/linuxapp/eal/include/eal_pci_init.h | 120 ++++
>  lib/librte_eal/linuxapp/eal/include/eal_vfio.h     |  55 ++
>  .../linuxapp/eal/include/exec-env/rte_interrupts.h |   7 +-
>  lib/librte_eal/linuxapp/igb_uio/igb_uio.c          |  70 +-
>  lib/librte_pmd_e1000/em_ethdev.c                   |   2 +-
>  lib/librte_pmd_e1000/igb_ethdev.c                  |   4 +-
>  lib/librte_pmd_ixgbe/ixgbe_ethdev.c                |   4 +-
>  lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c            |   2 +-
>  tools/dpdk_nic_bind.py                             | 500 +++++++++++++++
>  tools/igb_uio_bind.py                              | 485 --------------
>  tools/setup.sh                                     | 168 ++++-
>  33 files changed, 2797 insertions(+), 1000 deletions(-)
>  create mode 100644 lib/librte_eal/common/include/rte_pci_dev_feature_defs.h
>  create mode 100644 lib/librte_eal/common/include/rte_pci_dev_features.h
>  create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_uio.c
>  create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
>  create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio_socket.c
>  create mode 100644 lib/librte_eal/linuxapp/eal/include/eal_pci_init.h
>  create mode 100644 lib/librte_eal/linuxapp/eal/include/eal_vfio.h
>  create mode 100755 tools/dpdk_nic_bind.py
>  delete mode 100755 tools/igb_uio_bind.py
> 


Will this work in guest? or only on bare metal?