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IB/mlx5: Add support for big MRs 

Make use of extended UMR translation offset.

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Artemy Kovalyov 2017-01-02 11:37:43 +02:00 committed by David S. Miller
parent 3161625589
commit c438fde1c2
3 changed files with 11 additions and 3 deletions
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1
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -634,6 +634,7 @@ struct mlx5_ib_dev {
int fill_delay;
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
struct ib_odp_caps odp_caps;
u64 odp_max_size;
/*
* Sleepable RCU that prevents destruction of MRs while they are still
* being used by a page fault handler.

8
drivers/infiniband/hw/mlx5/mr.c
View File

@ -1121,8 +1121,9 @@ static struct mlx5_ib_mr *reg_create(struct ib_mr *ibmr, struct ib_pd *pd,
goto err_1;
}
pas = (__be64 *)MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt);
mlx5_ib_populate_pas(dev, umem, page_shift, pas,
pg_cap ? MLX5_IB_MTT_PRESENT : 0);
if (!(access_flags & IB_ACCESS_ON_DEMAND))
mlx5_ib_populate_pas(dev, umem, page_shift, pas,
pg_cap ? MLX5_IB_MTT_PRESENT : 0);
/* The pg_access bit allows setting the access flags
* in the page list submitted with the command. */
@ -1210,7 +1211,8 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
mlx5_ib_dbg(dev, "cache empty for order %d", order);
mr = NULL;
}
} else if (access_flags & IB_ACCESS_ON_DEMAND) {
} else if (access_flags & IB_ACCESS_ON_DEMAND &&
!MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset)) {
err = -EINVAL;
pr_err("Got MR registration for ODP MR > 512MB, not supported for Connect-IB");
goto error;

5
drivers/infiniband/hw/mlx5/odp.c
View File

@ -121,6 +121,11 @@ void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
caps->general_caps = IB_ODP_SUPPORT;
if (MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset))
dev->odp_max_size = U64_MAX;
else
dev->odp_max_size = BIT_ULL(MLX5_MAX_UMR_SHIFT + PAGE_SHIFT);
if (MLX5_CAP_ODP(dev->mdev, ud_odp_caps.send))
caps->per_transport_caps.ud_odp_caps |= IB_ODP_SUPPORT_SEND;