v3: - added new patches - 'vringh: explain more about cleaning riov and wiov' - 'vdpa: add return value to get_config/set_config callbacks' - 'vhost/vdpa: remove vhost_vdpa_config_validate()' - split Xie's patch 'vhost/vdpa: Remove the restriction that only supports virtio-net devices' - updated Mellanox copyright to NVIDIA [Max] - explained in the 'vdpa: add vdpa simulator for block device' commit message that inputs are validated in subsequent patches [Stefan] 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. As Jason suggested I split it into two patches and I added a return value to get_config()/set_config() callbacks. 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 (11): 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 return value to get_config/set_config callbacks vhost/vdpa: remove vhost_vdpa_config_validate() vdpa_sim_blk: implement ramdisk behaviour vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID 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 | 18 +- include/linux/vringh.h | 19 +- drivers/vdpa/ifcvf/ifcvf_main.c | 24 ++- drivers/vdpa/mlx5/net/mlx5_vnet.c | 17 +- drivers/vdpa/vdpa_sim/vdpa_sim.c | 134 ++++++++----- drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 288 +++++++++++++++++++++++++++ drivers/vhost/vdpa.c | 47 ++--- drivers/vhost/vringh.c | 69 +++++-- drivers/vdpa/Kconfig | 8 + drivers/vdpa/vdpa_sim/Makefile | 1 + 11 files changed, 504 insertions(+), 123 deletions(-) create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_blk.c -- 2.29.2
