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Date: Fri, 29 Oct 2021 17:14:41 +0800 From: Wu Zongyong <wuzongyong@...ux.alibaba.com> To: jasowang@...hat.com, virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, mst@...hat.com, wuzongyong@...ux.alibaba.com Cc: wei.yang1@...ux.alibaba.com Subject: [PATCH v7 0/9] vDPA driver for Alibaba ENI This series implements the vDPA driver for Alibaba ENI (Elastic Network Interface) which is built based on virtio-pci 0.9.5 specification. Changes since V6: - set default min vq size to 1 intead of 0 - enable eni vdpa driver only on X86 hosts - fix some typos Changes since V5: - remove unused codes Changes since V4: - check return values of get_vq_num_{max,min} when probing devices - disable the driver on BE host via Kconfig - add missing commit message Changes since V3: - validate VIRTIO_NET_F_MRG_RXBUF when negotiate features - present F_ORDER_PLATFORM in get_features - remove endian check since ENI always use litter endian Changes since V2: - add new attribute VDPA_ATTR_DEV_MIN_VQ_SIZE instead VDPA_ATTR_DEV_F_VERSION_1 to guide users to choose correct virtqueue size as suggested by Jason Wang - present ACCESS_PLATFORM in get_features callback as suggested by Jason Wang - disable this driver on Big Endian host as suggested by Jason Wang - fix a typo Changes since V1: - add new vdpa attribute VDPA_ATTR_DEV_F_VERSION_1 to indicate whether the vdpa device is legacy - implement dedicated driver for Alibaba ENI instead a legacy virtio-pci driver as suggested by Jason Wang - some bugs fixed Wu Zongyong (9): virtio-pci: introduce legacy device module vdpa: fix typo vp_vdpa: add vq irq offloading support vdpa: add new callback get_vq_num_min in vdpa_config_ops vdpa: min vq num of vdpa device cannot be greater than max vq num virtio_vdpa: setup correct vq size with callbacks get_vq_num_{max,min} vdpa: add new attribute VDPA_ATTR_DEV_MIN_VQ_SIZE eni_vdpa: add vDPA driver for Alibaba ENI eni_vdpa: alibaba: fix Kconfig typo drivers/vdpa/Kconfig | 8 + drivers/vdpa/Makefile | 1 + drivers/vdpa/alibaba/Makefile | 3 + drivers/vdpa/alibaba/eni_vdpa.c | 553 +++++++++++++++++++++++++ drivers/vdpa/vdpa.c | 13 + drivers/vdpa/virtio_pci/vp_vdpa.c | 12 + drivers/virtio/Kconfig | 10 + drivers/virtio/Makefile | 1 + drivers/virtio/virtio_pci_common.c | 10 +- drivers/virtio/virtio_pci_common.h | 9 +- drivers/virtio/virtio_pci_legacy.c | 101 ++--- drivers/virtio/virtio_pci_legacy_dev.c | 220 ++++++++++ drivers/virtio/virtio_vdpa.c | 16 +- include/linux/vdpa.h | 6 +- include/linux/virtio_pci_legacy.h | 42 ++ include/uapi/linux/vdpa.h | 1 + 16 files changed, 917 insertions(+), 89 deletions(-) create mode 100644 drivers/vdpa/alibaba/Makefile create mode 100644 drivers/vdpa/alibaba/eni_vdpa.c create mode 100644 drivers/virtio/virtio_pci_legacy_dev.c create mode 100644 include/linux/virtio_pci_legacy.h -- 2.31.1
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