All pieces are in place for ODP (on demand paging) to work using HMM.
Signed-off-by: Jérôme Glisse <[email protected]>
---
drivers/infiniband/core/uverbs_cmd.c | 4 ----
drivers/infiniband/hw/mlx5/main.c | 5 ++++-
2 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c
b/drivers/infiniband/core/uverbs_cmd.c
index 165c9cd..c5c9bf0 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -3444,9 +3444,6 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
goto end;
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
-#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM
-#error "CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM not supported at this stage !"
-#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM */
resp.odp_caps.general_caps = attr.odp_caps.general_caps;
resp.odp_caps.per_transport_caps.rc_odp_caps =
attr.odp_caps.per_transport_caps.rc_odp_caps;
@@ -3455,7 +3452,6 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
resp.odp_caps.per_transport_caps.ud_odp_caps =
attr.odp_caps.per_transport_caps.ud_odp_caps;
resp.odp_caps.reserved = 0;
-#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM */
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
memset(&resp.odp_caps, 0, sizeof(resp.odp_caps));
#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
diff --git a/drivers/infiniband/hw/mlx5/main.c
b/drivers/infiniband/hw/mlx5/main.c
index b731d06..1ba31d4 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -295,7 +295,10 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM
-#error "CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM not supported at this stage !"
+ if (MLX5_CAP_GEN(mdev, pg) && ibdev->hmm_ready) {
+ props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
+ props->odp_caps = dev->odp_caps;
+ }
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM */
if (MLX5_CAP_GEN(mdev, pg))
props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
--
1.9.3
--
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