Commit 6b0a3238289f ("verbs: Support dma-buf based memory region") caused a build failure when building for 32b systems with gcc:
$ mkdir build && cd build && CFLAGS="-m32" cmake -GNinja .. \ -DIOCTL_MODE=both -DNO_PYVERBS=1 -DENABLE_WERROR=1 && ninja ... ../libibverbs/cmd_mr.c: In function 'ibv_cmd_reg_dmabuf_mr': ../libibverbs/cmd_mr.c:152:21: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] vmr->ibv_mr.addr = (void *)offset; ... ../libibverbs/verbs.c: In function 'ibv_reg_dmabuf_mr': ../libibverbs/verbs.c:387:13: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] mr->addr = (void *)offset; ...
Reported-by: Ali Alnubani alialnu@nvidia.com Signed-off-by: Jianxin Xiong jianxin.xiong@intel.com --- libibverbs/cmd_mr.c | 2 +- libibverbs/verbs.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libibverbs/cmd_mr.c b/libibverbs/cmd_mr.c index af0fad7..736fce0 100644 --- a/libibverbs/cmd_mr.c +++ b/libibverbs/cmd_mr.c @@ -149,7 +149,7 @@ int ibv_cmd_reg_dmabuf_mr(struct ibv_pd *pd, uint64_t offset, size_t length, vmr->ibv_mr.lkey = lkey; vmr->ibv_mr.rkey = rkey; vmr->ibv_mr.pd = pd; - vmr->ibv_mr.addr = (void *)offset; + vmr->ibv_mr.addr = (void *)(uintptr_t)offset; vmr->ibv_mr.length = length; vmr->mr_type = IBV_MR_TYPE_DMABUF_MR; return 0; diff --git a/libibverbs/verbs.c b/libibverbs/verbs.c index b93046a..f666695 100644 --- a/libibverbs/verbs.c +++ b/libibverbs/verbs.c @@ -384,7 +384,7 @@ struct ibv_mr *ibv_reg_dmabuf_mr(struct ibv_pd *pd, uint64_t offset,
mr->context = pd->context; mr->pd = pd; - mr->addr = (void *)offset; + mr->addr = (void *)(uintptr_t)offset; mr->length = length; return mr; }