diff options
| author | Leon Romanovsky <leonro@nvidia.com> | 2025-04-28 12:22:18 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2025-05-12 06:06:46 -0400 |
| commit | eedd5b1276e76d6b260a7a77a149ef5155aa76f0 (patch) | |
| tree | 965d401266499d0b4dce50067624bd9140a1cac5 /include/rdma | |
| parent | mm/hmm: provide generic DMA managing logic (diff) | |
| download | linux-eedd5b1276e76d6b260a7a77a149ef5155aa76f0.tar.gz linux-eedd5b1276e76d6b260a7a77a149ef5155aa76f0.zip | |
RDMA/umem: Store ODP access mask information in PFN
As a preparation to remove dma_list, store access mask in PFN pointer
and not in dma_addr_t.
Tested-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_umem_odp.h | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h index 0844c1d05ac6..a345c26a745d 100644 --- a/include/rdma/ib_umem_odp.h +++ b/include/rdma/ib_umem_odp.h @@ -8,6 +8,7 @@ #include <rdma/ib_umem.h> #include <rdma/ib_verbs.h> +#include <linux/hmm.h> struct ib_umem_odp { struct ib_umem umem; @@ -67,19 +68,6 @@ static inline size_t ib_umem_odp_num_pages(struct ib_umem_odp *umem_odp) umem_odp->page_shift; } -/* - * The lower 2 bits of the DMA address signal the R/W permissions for - * the entry. To upgrade the permissions, provide the appropriate - * bitmask to the map_dma_pages function. - * - * Be aware that upgrading a mapped address might result in change of - * the DMA address for the page. - */ -#define ODP_READ_ALLOWED_BIT (1<<0ULL) -#define ODP_WRITE_ALLOWED_BIT (1<<1ULL) - -#define ODP_DMA_ADDR_MASK (~(ODP_READ_ALLOWED_BIT | ODP_WRITE_ALLOWED_BIT)) - #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING struct ib_umem_odp * |