vdpa/mlx5: Add support for doorbell bypassing

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Implement mlx5_get_vq_notification() to return the doorbell address.
Since the notification area is mapped to userspace, make sure that the
BAR size is at least PAGE_SIZE large.

Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210603081153.5750-1-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

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Eli Cohen 2021-06-03 11:11:53 +03:00 • committed by Michael S. Tsirkin

parent a7766ef18b

commit b57c46cb3c

3 changed files with 16 additions and 0 deletions

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1

drivers/vdpa/mlx5/core/mlx5_vdpa.h

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1

drivers/vdpa/mlx5/core/resources.c

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14

drivers/vdpa/mlx5/net/mlx5_vnet.c

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