Hi,
Patch series to allow access to virtio using vfio interface.
Tested for vfio-noiommu mode for x86_64/arm64{thunderX} platform.
patch series builds successfully for armv7/v8/x86_64/i686.
Note: Rebased on David(s) recent patch series titled "rework virtio for ioport".
Step to enable vfio-noiommu mode:
- modprobe vfio-pci
echo 1 > /sys/module/vfio/parameters/enable_unsafe_*
- then bind
./tools/dpdk_nic_bind.py -b vfio-pci 0000:00:03.0
- Testpmd application to try out for:
./app/testpmd -c 0x3 -n 4 -- -i --portmask=0x0 --nb-cores=1
--port-topology=chained
On host side ping to tapX interface and observe pkt_cnt on guest side.
v6-->v7:
- added support for vfio map/umap/rd/wr method for linuxapp.
- Tested for x86 / arm64{thunderX} vfio mode both.
v5-->v6:
- Removed KDRV_NOIOMMU mode
- patchseries aligned in topic-wise ordered way
- Introduced virtio_io.h; has in/out api, and header file sys/io.h
- Renamed virtio_vfio_rw.h to virtio_vfio_io.h, renamed ioport_in/out{b,w,l} to
vfio_in/out{b,w,l}
v4 --> v5:
- Introducing RTE_KDRV_VFIO_NOIOMMU driver mode
- Incorporated v4 review comments, Pl. refer each patchset for review change.
For older version(v4.. v1) patch history, refer [2].
Thanks.
[1] https://github.com/sshukla82/dpdk.git branch virtio-vfio-v6-review
[2] http://comments.gmane.org/gmane.comp.networking.dpdk.devel/31402
Santosh Shukla (4):
eal/linux: never check iopl for arm
virtio: Introduce config RTE_VIRTIO_INC_VECTOR
eal/linux: vfio: ignore mapping for ioport region
eal/linux: vfio: add pci ioport support
config/common_linuxapp | 1 +
config/defconfig_arm-armv7a-linuxapp-gcc | 4 +-
config/defconfig_arm64-armv8a-linuxapp-gcc | 4 +-
config/defconfig_i686-native-linuxapp-gcc | 1 +
config/defconfig_i686-native-linuxapp-icc | 1 +
drivers/net/virtio/Makefile | 2 +-
drivers/net/virtio/virtio_rxtx.c | 16 ++++++-
drivers/net/virtio/virtio_rxtx.h | 2 +
lib/librte_eal/linuxapp/eal/eal.c | 2 +
lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 68 ++++++++++++++++++++++------
10 files changed, 83 insertions(+), 18 deletions(-)
--
1.7.9.5
