Re: [Patch v7 5/5] RDMA/mana_ib: Send event to qp

From: Jason Gunthorpe
Date: Mon Oct 23 2023 - 14:23:39 EST


On Mon, Oct 16, 2023 at 03:12:02PM -0700, sharmaajay@xxxxxxxxxxxxxxxxx wrote:

> diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
> index ef3275ac92a0..19fae28985c3 100644
> --- a/drivers/infiniband/hw/mana/qp.c
> +++ b/drivers/infiniband/hw/mana/qp.c
> @@ -210,6 +210,8 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
> wq->id = wq_spec.queue_index;
> cq->id = cq_spec.queue_index;
>
> + xa_store(&mib_dev->rq_to_qp_lookup_table, wq->id, qp, GFP_KERNEL);
> +

A store with no erase?

A load with no locking?

This can't be right

Jason