Re: [PATCH rdma-next 26/50] RDMA/erdma: Separate user and kernel CQ creation paths

[Leon Romanovsky <leon@kernel.org>]

On Tue, Feb 24, 2026 at 10:20:39AM +0800, Cheng Xu wrote:
> 
> 
> On 2/13/26 6:58 PM, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@nvidia.com>
> > 
> > Split CQ creation into distinct kernel and user flows. The hns driver,
> > inherited from mlx4, uses a problematic pattern that shares and caches
> > umem in hns_roce_db_map_user(). This design blocks the driver from
> > supporting generic umem sources (VMA, dmabuf, memfd, and others).
> > 
> > In addition, let's delete counter that counts CQ creation errors. There
> > are multiple ways to debug kernel in modern kernel without need to rely
> > on that debugfs counter.
> > 
> > Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> > ---
> >  drivers/infiniband/hw/hns/hns_roce_cq.c      | 103 ++++++++++++++++++++-------
> >  drivers/infiniband/hw/hns/hns_roce_debugfs.c |   1 -
> >  drivers/infiniband/hw/hns/hns_roce_device.h  |   3 +-
> >  drivers/infiniband/hw/hns/hns_roce_main.c    |   1 +
> >  4 files changed, 82 insertions(+), 26 deletions(-)
> > 
> 
> Hi Leon,
> 
> The driver name in this patch's title should be "RDMA/hns".

Right, thanks