Hi Anatoly, Any feedback on the series? This is important for vDPA support, to be compliant with containeriez application using external memory.
Thanks, Maxime On 12/13/19 3:13 PM, Maxime Coquelin wrote: > Somme applications/frameworks using DPDK allocate their own memory > for its buffers. This is the case of Seastar, and also VPP. > > It is currently not possible to use Virtio-user PMD with these > applications because Virtio-user requires file descriptor for this > memory to be shared with the vhost-user backend (vDPA in our case [0]). > > This series introduces a new API in EAL to register external memory > that is contiguous in both the VA and the IOVA space. > > It also enables VDEVs to implement the DMA map/unmap callback, and > implement it in Virtio-user PMD. > > Please note that extmem unit tests are missing. I'm working on it > and it will be in v2. Just share this v1 for early reviews. > > Maxime Coquelin (4): > eal: add new API to register contiguous external memory > eal: allow getting memory segment FD with external memory > bus/vdev: add DMA mapping supprt > net/virtio: add DMA mapping callback to virtio-user > > drivers/bus/vdev/rte_bus_vdev.h | 24 +++++ > drivers/bus/vdev/vdev.c | 50 +++++++++++ > .../net/virtio/virtio_user/virtio_user_dev.c | 10 +-- > .../net/virtio/virtio_user/virtio_user_dev.h | 3 + > drivers/net/virtio/virtio_user_ethdev.c | 58 +++++++++++++ > lib/librte_eal/common/eal_common_memory.c | 87 ++++++++++++++++--- > lib/librte_eal/common/include/rte_memory.h | 46 ++++++++++ > lib/librte_eal/common/malloc_heap.c | 17 +++- > lib/librte_eal/common/malloc_heap.h | 2 +- > lib/librte_eal/common/rte_malloc.c | 2 +- > lib/librte_eal/rte_eal_version.map | 3 + > 11 files changed, 278 insertions(+), 24 deletions(-) >
