diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 4 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index 6425c0e5d18a..019a8dda9ec8 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -50,6 +50,16 @@ config INFINIBAND_ON_DEMAND_PAGING memory regions without pinning their pages, fetching the pages on demand instead. +config INFINIBAND_ON_DEMAND_PAGING_HMM + bool "InfiniBand on-demand paging support using HMM." + depends on HMM + depends on INFINIBAND_ON_DEMAND_PAGING + default n + ---help--- + Use HMM (heterogeneous memory management) kernel API for + on demand paging. No userspace difference, this is just + an alternative implementation of the feature. + config INFINIBAND_ADDR_TRANS bool depends on INFINIBAND diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index fe63a302e13c..7e915827d376 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -556,6 +556,10 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, #if IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) #if IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING_HMM) + 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; |