[RFC PATCH 2/8 v2] IB/mlx5: add a new parameter to mlx5_ib_update_mtt() for ODP with HMM.

[JÃrÃme Glisse]

When using HMM for ODP it will be useful to pass the current mirror
page table iterator for mlx5_ib_update_mtt() function benefit. Add
void parameter for this.

Signed-off-by: JÃrÃme Glisse <jglisse@xxxxxxxxxx>
---
 drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 +-
 drivers/infiniband/hw/mlx5/mr.c      | 4 ++--
 drivers/infiniband/hw/mlx5/odp.c     | 8 +++++---
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index d4dbd8e..79d1e7c 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -571,7 +571,7 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 				  u64 virt_addr, int access_flags,
 				  struct ib_udata *udata);
 int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index,
-		       int npages, int zap);
+		       int npages, int zap, void *data);
 int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
 int mlx5_ib_destroy_mr(struct ib_mr *ibmr);
 struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index ef63e5f..3ad371d 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -845,7 +845,7 @@ free_mr:
 
 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index, int npages,
-		       int zap)
+		       int zap, void *data)
 {
 	struct mlx5_ib_dev *dev = mr->dev;
 	struct device *ddev = dev->ib_dev.dma_device;
@@ -912,7 +912,7 @@ int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index, int npages,
 		if (!zap) {
 			__mlx5_ib_populate_pas(dev, umem, PAGE_SHIFT,
 					       start_page_index, npages, pas,
-					       MLX5_IB_MTT_PRESENT, NULL);
+					       MLX5_IB_MTT_PRESENT, data);
 			/* Clear padding after the pages brought from the
 			 * umem. */
 			memset(pas + npages, 0, size - npages * sizeof(u64));
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index aa8391e..df86d05 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -91,14 +91,15 @@ void mlx5_ib_invalidate_range(struct ib_umem *umem, unsigned long start,
 
 			if (in_block && umr_offset == 0) {
 				mlx5_ib_update_mtt(mr, blk_start_idx,
-						   idx - blk_start_idx, 1);
+						   idx - blk_start_idx, 1,
+						   NULL);
 				in_block = 0;
 			}
 		}
 	}
 	if (in_block)
 		mlx5_ib_update_mtt(mr, blk_start_idx, idx - blk_start_idx + 1,
-				   1);
+				   1, NULL);
 
 	/*
 	 * We are now sure that the device will not access the
@@ -249,7 +250,8 @@ static int pagefault_single_data_segment(struct mlx5_ib_qp *qp,
 			 * this MR, since ib_umem_odp_map_dma_pages already
 			 * checks this.
 			 */
-			ret = mlx5_ib_update_mtt(mr, start_idx, npages, 0);
+			ret = mlx5_ib_update_mtt(mr, start_idx,
+						 npages, 0, NULL);
 		} else {
 			ret = -EAGAIN;
 		}
-- 
1.9.3

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