1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 8845f4b9621b..05036dbb9804 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -991,7 +991,14 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
         if (field_avail(typeof(resp), cqe_version, udata->outlen))
                 resp.response_length += sizeof(resp.cqe_version);
 
-        if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
+        /*
+         * We don't want to expose information from the PCI bar that is located
+         * after 4096 bytes, so if the arch only supports larger pages, let's
+         * pretend we don't support reading the HCA's core clock. This is also
+         * forced by mmap function.
+         */
+        if (PAGE_SIZE <= 4096 &&
+            field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) {
                 resp.comp_mask |=
                         MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
                 resp.hca_core_clock_offset =