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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20191213141322.32730-1-maxime.coquelin@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: Ov2crcgcPe-1AkkYSfkayQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH 0/4] Add external contiguous memory support to Virtio-user X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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(-) >