diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/main.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index b7151f8f8fa5..1f91d9e543e2 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -39,9 +39,6 @@ #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/bitmap.h> -#if defined(CONFIG_X86) -#include <asm/memtype.h> -#endif #include <linux/sched.h> #include <linux/sched/mm.h> #include <linux/sched/task.h> @@ -2145,14 +2142,6 @@ static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, switch (cmd) { case MLX5_IB_MMAP_WC_PAGE: case MLX5_IB_MMAP_ALLOC_WC: -/* Some architectures don't support WC memory */ -#if defined(CONFIG_X86) - if (!pat_enabled()) - return -EPERM; -#elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU))) - return -EPERM; -#endif - /* fall through */ case MLX5_IB_MMAP_REGULAR_PAGE: /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ prot = pgprot_writecombine(vma->vm_page_prot); @@ -2298,9 +2287,12 @@ static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vm command = get_command(vma->vm_pgoff); switch (command) { case MLX5_IB_MMAP_WC_PAGE: + case MLX5_IB_MMAP_ALLOC_WC: + if (!dev->wc_support) + return -EPERM; + fallthrough; case MLX5_IB_MMAP_NC_PAGE: case MLX5_IB_MMAP_REGULAR_PAGE: - case MLX5_IB_MMAP_ALLOC_WC: return uar_mmap(dev, command, vma, context); case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: |