From: Chengchang Tang <tangchengchang@huawei.com> maillist inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IC1RZZ CVE: NA Reference: https://web.git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?h=... ---------------------------------------------------------------------- Set maximum DMA segment size to 2G instead of UINT_MAX due to HW limit. Fixes: e0477b34d9d1 ("RDMA: Explicitly pass in the dma_device to ib_register_device") Link: https://patch.msgid.link/r/20250327114724.3454268-3-huangjunxian6@hisilicon.... Signed-off-by: Chengchang Tang <tangchengchang@huawei.com> Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Xinghai Cen <cenxinghai@h-partners.com> --- drivers/infiniband/hw/hns/hns_roce_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 07dea962c7fe..a77dc1d70a1c 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -1024,7 +1024,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev) if (ret) return ret; } - dma_set_max_seg_size(dev, UINT_MAX); + dma_set_max_seg_size(dev, SZ_2G); if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_BOND) && (hr_dev->hw->bond_is_active(hr_dev))) -- 2.33.0