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RDMA/irdma: Remove use of kmap()

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kmap() is being deprecated and will break uses of device dax after PKS
protection is introduced.[1]

The kmap() used in the irdma CM driver is thread local.  Therefore
kmap_local_page() is sufficient to use and may provide performance
benefits as well.  kmap_local_page() will work with device dax and pgmap
protected pages.

Use kmap_local_page() instead of kmap().

[1] https://lore.kernel.org/lkml/20201009195033.3208459-59-ira.weiny@intel.com/

Link: https://lore.kernel.org/r/20210622165622.2638628-1-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Ira Weiny 2021-06-22 09:56:22 -07:00 committed by Jason Gunthorpe
parent 6becfe913b
commit 7364e74d48
1 changed files with 4 additions and 4 deletions
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8
drivers/infiniband/hw/irdma/cm.c
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@ -3675,14 +3675,14 @@ int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
ibmr->device = iwpd->ibpd.device;
iwqp->lsmm_mr = ibmr;
if (iwqp->page)
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
cm_node->lsmm_size = accept.size + conn_param->private_data_len;
irdma_sc_send_lsmm(&iwqp->sc_qp, iwqp->ietf_mem.va, cm_node->lsmm_size,
ibmr->lkey);
if (iwqp->page)
kunmap(iwqp->page);
kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
iwqp->cm_id = cm_id;
cm_node->cm_id = cm_id;
@ -4093,10 +4093,10 @@ static void irdma_cm_event_connected(struct irdma_cm_event *event)
irdma_cm_init_tsa_conn(iwqp, cm_node);
read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
if (iwqp->page)
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
irdma_sc_send_rtt(&iwqp->sc_qp, read0);
if (iwqp->page)
kunmap(iwqp->page);
kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
attr.qp_state = IB_QPS_RTS;
cm_node->qhash_set = false;