diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/main.c')
-rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index d9474b9..bd565af 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -92,6 +92,12 @@ static LIST_HEAD(mlx5_ib_dev_list); */ static DEFINE_MUTEX(mlx5_ib_multiport_mutex); +/* We can't use an array for xlt_emergency_page because dma_map_single + * doesn't work on kernel modules memory + */ +static unsigned long xlt_emergency_page; +static struct mutex xlt_emergency_page_mutex; + struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi) { struct mlx5_ib_dev *dev; @@ -1698,17 +1704,10 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range; #endif - context->upd_xlt_page = __get_free_page(GFP_KERNEL); - if (!context->upd_xlt_page) { - err = -ENOMEM; - goto out_uars; - } - mutex_init(&context->upd_xlt_page_mutex); - if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) { err = mlx5_ib_alloc_transport_domain(dev, &context->tdn); if (err) - goto out_page; + goto out_uars; } INIT_LIST_HEAD(&context->vma_private_list); @@ -1785,9 +1784,6 @@ out_td: if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) mlx5_ib_dealloc_transport_domain(dev, context->tdn); -out_page: - free_page(context->upd_xlt_page); - out_uars: deallocate_uars(dev, context); @@ -1813,7 +1809,6 @@ static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) mlx5_ib_dealloc_transport_domain(dev, context->tdn); - free_page(context->upd_xlt_page); deallocate_uars(dev, context); kfree(bfregi->sys_pages); kfree(bfregi->count); @@ -5292,13 +5287,32 @@ static struct mlx5_interface mlx5_ib_interface = { .protocol = MLX5_INTERFACE_PROTOCOL_IB, }; +unsigned long mlx5_ib_get_xlt_emergency_page(void) +{ + mutex_lock(&xlt_emergency_page_mutex); + return xlt_emergency_page; +} + +void mlx5_ib_put_xlt_emergency_page(void) +{ + mutex_unlock(&xlt_emergency_page_mutex); +} + static int __init mlx5_ib_init(void) { int err; + xlt_emergency_page = __get_free_page(GFP_KERNEL); + if (!xlt_emergency_page) + return -ENOMEM; + + mutex_init(&xlt_emergency_page_mutex); + mlx5_ib_event_wq = alloc_ordered_workqueue("mlx5_ib_event_wq", 0); - if (!mlx5_ib_event_wq) + if (!mlx5_ib_event_wq) { + free_page(xlt_emergency_page); return -ENOMEM; + } mlx5_ib_odp_init(); @@ -5311,6 +5325,8 @@ static void __exit mlx5_ib_cleanup(void) { mlx5_unregister_interface(&mlx5_ib_interface); destroy_workqueue(mlx5_ib_event_wq); + mutex_destroy(&xlt_emergency_page_mutex); + free_page(xlt_emergency_page); } module_init(mlx5_ib_init); |