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[0/4] vdpa/mlx5: support direct notification

Message ID 1585059877-2369-1-git-send-email-asafp@mellanox.com (mailing list archive)
Headers

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Asaf Penso March 24, 2020, 2:24 p.m. UTC 
  In order to save CPU usage in host and even make it 0 when guest work with poll mode,
add support for direct doorbell ringing.

Now, when the feature is supported in QEMU, the guest doorbell address is mapped directly to the HW doorbell space and the host SW relay is not used. 

Matan Azrad (4):
  vdpa/mlx5: move virtual doorbell alloc to probe
  vdpa/mlx5: support direct HW notifications
  vdpa/mlx5: validate notifier configuration
  vdpa/mlx5: add log prints

 drivers/vdpa/mlx5/mlx5_vdpa.c       | 90 +++++++++++++++++++++++++++++++------
 drivers/vdpa/mlx5/mlx5_vdpa.h       |  1 +
 drivers/vdpa/mlx5/mlx5_vdpa_steer.c |  2 +
 drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 39 ++++++++--------
 4 files changed, 100 insertions(+), 32 deletions(-)