v4: - added support for iproute2 vdpa management tool in vdpa_sim_blk - removed get/set_config patches - 'vdpa: add return value to get_config/set_config callbacks' - 'vhost/vdpa: remove vhost_vdpa_config_validate()' - added get_config_size() patches - 'vdpa: add get_config_size callback in vdpa_config_ops' - 'vhost/vdpa: use get_config_size callback in vhost_vdpa_config_validate()' v3: https://lore.kernel.org/lkml/20210204172230.85853-1-sgarzare@xxxxxxxxxx/ v2: https://lore.kernel.org/lkml/20210128144127.113245-1-sgarzare@xxxxxxxxxx/ v1: https://lore.kernel.org/lkml/93f207c0-61e6-3696-f218-e7d7ea9a7c93@xxxxxxxxxx/ This series is the second part of the v1 linked above. The first part with refactoring of vdpa_sim has already been merged. The patches are based on Max Gurtovoy's work and extend the block simulator to have a ramdisk behaviour. As mentioned in the v1 there was 2 issues and I fixed them in this series: 1. The identical mapping in the IOMMU used until now in vdpa_sim created issues when mapping different virtual pages with the same physical address. Fixed by patch "vdpa_sim: use iova module to allocate IOVA addresses" 2. There was a race accessing the IOMMU between the vdpasim_blk_work() and the device driver that map/unmap DMA regions. Fixed by patch "vringh: add 'iotlb_lock' to synchronize iotlb accesses" I used the Xie's patch coming from VDUSE series to allow vhost-vdpa to use block devices, and I added get_config_size() callback to allow any device in vhost-vdpa. The series also includes small fixes for vringh, vdpa, and vdpa_sim that I discovered while implementing and testing the block simulator. Thanks for your feedback, Stefano Max Gurtovoy (1): vdpa: add vdpa simulator for block device Stefano Garzarella (12): vdpa_sim: use iova module to allocate IOVA addresses vringh: add 'iotlb_lock' to synchronize iotlb accesses vringh: reset kiov 'consumed' field in __vringh_iov() vringh: explain more about cleaning riov and wiov vringh: implement vringh_kiov_advance() vringh: add vringh_kiov_length() helper vdpa_sim: cleanup kiovs in vdpasim_free() vdpa: add get_config_size callback in vdpa_config_ops vhost/vdpa: use get_config_size callback in vhost_vdpa_config_validate() vdpa_sim_blk: implement ramdisk behaviour vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID vdpa_sim_blk: add support for vdpa management tool Xie Yongji (1): vhost/vdpa: Remove the restriction that only supports virtio-net devices drivers/vdpa/vdpa_sim/vdpa_sim.h | 2 + include/linux/vdpa.h | 4 + include/linux/vringh.h | 19 +- drivers/vdpa/ifcvf/ifcvf_main.c | 6 + drivers/vdpa/mlx5/net/mlx5_vnet.c | 6 + drivers/vdpa/vdpa_sim/vdpa_sim.c | 127 ++++++---- drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 338 +++++++++++++++++++++++++++ drivers/vdpa/virtio_pci/vp_vdpa.c | 8 + drivers/vhost/vdpa.c | 15 +- drivers/vhost/vringh.c | 69 ++++-- drivers/vdpa/Kconfig | 8 + drivers/vdpa/vdpa_sim/Makefile | 1 + 12 files changed, 529 insertions(+), 74 deletions(-) create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_blk.c -- 2.30.2
