On Tue, 2023-09-12 at 16:01 +0300, Dragos Tatulea wrote: > This patch series adds support for vq descriptor table mappings which > are used to improve vdpa live migration downtime. The improvement comes > from using smaller mappings which take less time to create and destroy > in hw. > Gentle ping. Note that I will have to send a v2. The changes in mlx5_ifc.h will need to be merged first separately into the mlx5-next branch [0] and then pulled from there when the series is applied. [0] https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git/log/?h=mlx5-next Thanks, Dragos > The first part adds the vdpa core changes from Si-Wei [0]. > > The second part adds support in mlx5_vdpa: > - Refactor the mr code to be able to cleanly add descriptor mappings. > - Add hardware descriptor mr support. > - Properly update iotlb for cvq during ASID switch. > > [0] > https://lore.kernel.org/virtualization/1694248959-13369-1-git-send-email-si-wei.liu@xxxxxxxxxx > > Dragos Tatulea (13): > vdpa/mlx5: Create helper function for dma mappings > vdpa/mlx5: Decouple cvq iotlb handling from hw mapping code > vdpa/mlx5: Take cvq iotlb lock during refresh > vdpa/mlx5: Collapse "dvq" mr add/delete functions > vdpa/mlx5: Rename mr destroy functions > vdpa/mlx5: Allow creation/deletion of any given mr struct > vdpa/mlx5: Move mr mutex out of mr struct > vdpa/mlx5: Improve mr update flow > vdpa/mlx5: Introduce mr for vq descriptor > vdpa/mlx5: Enable hw support for vq descriptor mapping > vdpa/mlx5: Make iotlb helper functions more generic > vdpa/mlx5: Update cvq iotlb mapping on ASID change > Cover letter: vdpa/mlx5: Add support for vq descriptor mappings > > Si-Wei Liu (3): > vdpa: introduce dedicated descriptor group for virtqueue > vhost-vdpa: introduce descriptor group backend feature > vhost-vdpa: uAPI to get dedicated descriptor group id > > drivers/vdpa/mlx5/core/mlx5_vdpa.h | 31 +++-- > drivers/vdpa/mlx5/core/mr.c | 191 ++++++++++++++++------------- > drivers/vdpa/mlx5/core/resources.c | 6 +- > drivers/vdpa/mlx5/net/mlx5_vnet.c | 100 ++++++++++----- > drivers/vhost/vdpa.c | 27 ++++ > include/linux/mlx5/mlx5_ifc.h | 8 +- > include/linux/mlx5/mlx5_ifc_vdpa.h | 7 +- > include/linux/vdpa.h | 11 ++ > include/uapi/linux/vhost.h | 8 ++ > include/uapi/linux/vhost_types.h | 5 + > 10 files changed, 264 insertions(+), 130 deletions(-) > _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
