6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Aharon Landau <aharonl@xxxxxxxxxx> [ Upstream commit 18b1746bddf5e7f6b2618966596d9517172a5cd7 ] Implicit ODP mkey doesn't have unique properties. It shares the same properties as the order 18 cache entry. There is no need to devote a special entry for that. Link: https://lore.kernel.org/r/20230125222807.6921-3-michaelgur@xxxxxxxxxx Signed-off-by: Aharon Landau <aharonl@xxxxxxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Stable-dep-of: d97505baea64 ("RDMA/mlx5: Fix the recovery flow of the UMR QP") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/infiniband/hw/mlx5/odp.c | 20 +++++--------------- include/linux/mlx5/driver.h | 1 - 2 files changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index a5c9baec8be85..5f0a17382de73 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -406,6 +406,7 @@ static void mlx5_ib_page_fault_resume(struct mlx5_ib_dev *dev, static struct mlx5_ib_mr *implicit_get_child_mr(struct mlx5_ib_mr *imr, unsigned long idx) { + int order = order_base_2(MLX5_IMR_MTT_ENTRIES); struct mlx5_ib_dev *dev = mr_to_mdev(imr); struct ib_umem_odp *odp; struct mlx5_ib_mr *mr; @@ -418,7 +419,8 @@ static struct mlx5_ib_mr *implicit_get_child_mr(struct mlx5_ib_mr *imr, if (IS_ERR(odp)) return ERR_CAST(odp); - mr = mlx5_mr_cache_alloc(dev, &dev->cache.ent[MLX5_IMR_MTT_CACHE_ENTRY], + BUILD_BUG_ON(order > MKEY_CACHE_LAST_STD_ENTRY); + mr = mlx5_mr_cache_alloc(dev, &dev->cache.ent[order], imr->access_flags); if (IS_ERR(mr)) { ib_umem_odp_release(odp); @@ -1595,20 +1597,8 @@ void mlx5_odp_init_mkey_cache_entry(struct mlx5_cache_ent *ent) { if (!(ent->dev->odp_caps.general_caps & IB_ODP_SUPPORT_IMPLICIT)) return; - - switch (ent->order - 2) { - case MLX5_IMR_MTT_CACHE_ENTRY: - ent->ndescs = MLX5_IMR_MTT_ENTRIES; - ent->access_mode = MLX5_MKC_ACCESS_MODE_MTT; - ent->limit = 0; - break; - - case MLX5_IMR_KSM_CACHE_ENTRY: - ent->ndescs = mlx5_imr_ksm_entries; - ent->access_mode = MLX5_MKC_ACCESS_MODE_KSM; - ent->limit = 0; - break; - } + ent->ndescs = mlx5_imr_ksm_entries; + ent->access_mode = MLX5_MKC_ACCESS_MODE_KSM; } static const struct ib_device_ops mlx5_ib_dev_odp_ops = { diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 3c3e0f26c2446..6cea62ca76d6b 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -744,7 +744,6 @@ enum { enum { MKEY_CACHE_LAST_STD_ENTRY = 20, - MLX5_IMR_MTT_CACHE_ENTRY, MLX5_IMR_KSM_CACHE_ENTRY, MAX_MKEY_CACHE_ENTRIES }; -- 2.39.5
