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ib_umem_num_pages() should only be used by things working with the SGL in CPU pages directly. Drivers building DMA lists should use the new ib_num_dma_blocks() which returns the number of blocks rdma_umem_for_each_block() will return. To make this general for DMA drivers requires a different implementation. Computing DMA block count based on umem->address only works if the requested page size is < PAGE_SIZE and/or the IOVA == umem->address. Instead the number of DMA pages should be computed in the IOVA address space, not umem->address. Thus the IOVA has to be stored inside the umem so it can be used for these calculations. For now set it to umem->address by default and fix it up if ib_umem_find_best_pgsz() was called. This allows drivers to be converted to ib_umem_num_dma_blocks() safely. Link: https://lore.kernel.org/r/6-v2-270386b7e60b+28f4-umem_1_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| pvrdma.h | ||
| pvrdma_cmd.c | ||
| pvrdma_cq.c | ||
| pvrdma_dev_api.h | ||
| pvrdma_doorbell.c | ||
| pvrdma_main.c | ||
| pvrdma_misc.c | ||
| pvrdma_mr.c | ||
| pvrdma_qp.c | ||
| pvrdma_ring.h | ||
| pvrdma_srq.c | ||
| pvrdma_verbs.c | ||
| pvrdma_verbs.h | ||