Increase the DMA max_segment_size parameter from 64 KB to 2 GB.
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_verbs.c | 3 +++
drivers/infiniband/sw/rxe/rxe_verbs.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index fa47bdcc7f54..9dd4bd7aea92 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -1175,6 +1175,9 @@ int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name)
addrconf_addr_eui48((unsigned char *)&dev->node_guid,
rxe->ndev->dev_addr);
dev->dev.dma_ops = &dma_virt_ops;
+ dev->dev.dma_parms = &rxe->dma_parms;
+ rxe->dma_parms = (struct device_dma_parameters)
+ { .max_segment_size = SZ_2G };
dma_coerce_mask_and_coherent(&dev->dev,
dma_get_required_mask(&dev->dev));
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h
index 5c4b2239129c..95834206c80c 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.h
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.h
@@ -384,6 +384,7 @@ struct rxe_port {
struct rxe_dev {
struct ib_device ib_dev;
struct ib_device_attr attr;
+ struct device_dma_parameters dma_parms;
int max_ucontext;
int max_inline_data;
struct mutex usdev_lock;
--
2.24.0.rc0.303.g954a862665-goog
