diff options
| author |   Jason Gunthorpe <jgg@nvidia.com> | 2020-09-04 19:41:46 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-09-09 15:33:17 -0300 |
| commit | 89603f7e7e5a6b719f1a163a05bd8a9231b58318 (patch) | |
| tree | 5b3a35c74fa3f9e60013e9871b7f0ce8346116a7 /drivers/infiniband/hw/vmw_pvrdma | |
| parent | RDMA/umem: Add rdma_umem_for_each_dma_block() (diff) | |
| download | linux-dev-89603f7e7e5a6b719f1a163a05bd8a9231b58318.tar.xz linux-dev-89603f7e7e5a6b719f1a163a05bd8a9231b58318.zip | |
RDMA/umem: Replace for_each_sg_dma_page with rdma_umem_for_each_dma_block
Generally drivers should be using this core helper to split up the umem
into DMA pages.
These drivers are all probably wrong in some way to pass PAGE_SIZE in as
the HW page size. Either the driver doesn't support other page sizes and
it should use 4096, or the driver does support other page sizes and should
use ib_umem_find_best_pgsz() to select the best HW pages size of the HW
supported set.
The only case it could be correct is if the HW has a global setting for
PAGE_SIZE set at driver initialization time.
Link: https://lore.kernel.org/r/5-v2-270386b7e60b+28f4-umem_1_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/vmw_pvrdma')
| -rw-r--r-- | drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c index 7944c58ded0e..ba43ad07898c 100644 --- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c +++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c @@ -182,17 +182,16 @@ int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx, int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir, struct ib_umem *umem, u64 offset) { + struct ib_block_iter biter; u64 i = offset; int ret = 0; - struct sg_dma_page_iter sg_iter; if (offset >= pdir->npages) return -EINVAL; - for_each_sg_dma_page(umem->sg_head.sgl, &sg_iter, umem->nmap, 0) { - dma_addr_t addr = sg_page_iter_dma_address(&sg_iter); - - ret = pvrdma_page_dir_insert_dma(pdir, i, addr); + rdma_umem_for_each_dma_block (umem, &biter, PAGE_SIZE) { + ret = pvrdma_page_dir_insert_dma( + pdir, i, rdma_block_iter_dma_address(&biter)); if (ret) goto exit; |