Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "A very quiet cycle with few notable changes. Mostly the usual list of
  one or two patches to drivers changing something that isn't quite rc
  worthy. The subsystem seems to be seeing a larger number of rework and
  cleanup style patches right now, I feel that several vendors are
  prepping their drivers for new silicon.

  Summary:

   - Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4,
     rxe, i40iw

   - Larger series doing cleanup and rework for hns and hfi1.

   - Some general reworking of the CM code to make it a little more
     understandable

   - Unify the different code paths connected to the uverbs FD scheme

   - New UAPI ioctls conversions for get context and get async fd

   - Trace points for CQ and CM portions of the RDMA stack

   - mlx5 driver support for virtio-net formatted rings as RDMA raw
     ethernet QPs

   - verbs support for setting the PCI-E relaxed ordering bit on DMA
     traffic connected to a MR

   - A couple of bug fixes that came too late to make rc7"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (108 commits)
  RDMA/core: Make the entire API tree static
  RDMA/efa: Mask access flags with the correct optional range
  RDMA/cma: Fix unbalanced cm_id reference count during address resolve
  RDMA/umem: Fix ib_umem_find_best_pgsz()
  IB/mlx4: Fix leak in id_map_find_del
  IB/opa_vnic: Spelling correction of 'erorr' to 'error'
  IB/hfi1: Fix logical condition in msix_request_irq
  RDMA/cm: Remove CM message structs
  RDMA/cm: Use IBA functions for complex structure members
  RDMA/cm: Use IBA functions for simple structure members
  RDMA/cm: Use IBA functions for swapping get/set acessors
  RDMA/cm: Use IBA functions for simple get/set acessors
  RDMA/cm: Add SET/GET implementations to hide IBA wire format
  RDMA/cm: Add accessors for CM_REQ transport_type
  IB/mlx5: Return the administrative GUID if exists
  RDMA/core: Ensure that rdma_user_mmap_entry_remove() is a fence
  IB/mlx4: Fix memory leak in add_gid error flow
  IB/mlx5: Expose RoCE accelerator counters
  RDMA/mlx5: Set relaxed ordering when requested
  RDMA/core: Add the core support field to METHOD_GET_CONTEXT
  ...

9 files changed, 415 insertions, 191 deletions

diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index 685b8ed96b4e..d7efc9f6daf0 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -30,7 +30,7 @@ enum devx_obj_flags {
 struct devx_async_data {
 	struct mlx5_ib_dev *mdev;
 	struct list_head list;
-	struct ib_uobject *fd_uobj;
+	struct devx_async_cmd_event_file *ev_file;
 	struct mlx5_async_work cb_work;
 	u16 cmd_out_len;
 	/* must be last field in this structure */
@@ -72,7 +72,6 @@ struct devx_event_subscription {
 	struct rcu_head	rcu;
 	u64 cookie;
 	struct devx_async_event_file *ev_file;
-	struct file *filp; /* Upon hot unplug we need a direct access to */
 	struct eventfd_ctx *eventfd;
 };
 
@@ -1674,21 +1673,20 @@ static void devx_query_callback(int status, struct mlx5_async_work *context)
 {
 	struct devx_async_data *async_data =
 		container_of(context, struct devx_async_data, cb_work);
-	struct ib_uobject *fd_uobj = async_data->fd_uobj;
-	struct devx_async_cmd_event_file *ev_file;
-	struct devx_async_event_queue *ev_queue;
+	struct devx_async_cmd_event_file *ev_file = async_data->ev_file;
+	struct devx_async_event_queue *ev_queue = &ev_file->ev_queue;
 	unsigned long flags;
 
-	ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file,
-			       uobj);
-	ev_queue = &ev_file->ev_queue;
-
+	/*
+	 * Note that if the struct devx_async_cmd_event_file uobj begins to be
+	 * destroyed it will block at mlx5_cmd_cleanup_async_ctx() until this
+	 * routine returns, ensuring that it always remains valid here.
+	 */
 	spin_lock_irqsave(&ev_queue->lock, flags);
 	list_add_tail(&async_data->list, &ev_queue->event_list);
 	spin_unlock_irqrestore(&ev_queue->lock, flags);
 
 	wake_up_interruptible(&ev_queue->poll_wait);
-	fput(fd_uobj->object);
 }
 
 #define MAX_ASYNC_BYTES_IN_USE (1024 * 1024) /* 1MB */
@@ -1757,9 +1755,8 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)(
 
 	async_data->cmd_out_len = cmd_out_len;
 	async_data->mdev = mdev;
-	async_data->fd_uobj = fd_uobj;
+	async_data->ev_file = ev_file;
 
-	get_file(fd_uobj->object);
 	MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
 	err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in,
 		    uverbs_attr_get_len(attrs,
@@ -1769,12 +1766,10 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)(
 		    devx_query_callback, &async_data->cb_work);
 
 	if (err)
-		goto cb_err;
+		goto free_async;
 
 	return 0;
 
-cb_err:
-	fput(fd_uobj->object);
 free_async:
 	kvfree(async_data);
 sub_bytes:
@@ -2032,6 +2027,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)(
 			goto err;
 
 		list_add_tail(&event_sub->event_list, &sub_list);
+		uverbs_uobject_get(&ev_file->uobj);
 		if (use_eventfd) {
 			event_sub->eventfd =
 				eventfd_ctx_fdget(redirect_fd);
@@ -2045,7 +2041,6 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)(
 
 		event_sub->cookie = cookie;
 		event_sub->ev_file = ev_file;
-		event_sub->filp = fd_uobj->object;
 		/* May be needed upon cleanup the devx object/subscription */
 		event_sub->xa_key_level1 = key_level1;
 		event_sub->xa_key_level2 = obj_id;
@@ -2099,7 +2094,7 @@ err:
 
 		if (event_sub->eventfd)
 			eventfd_ctx_put(event_sub->eventfd);
-
+		uverbs_uobject_put(&event_sub->ev_file->uobj);
 		kfree(event_sub);
 	}
 
@@ -2329,6 +2324,9 @@ static int deliver_event(struct devx_event_subscription *event_sub,
 			return 0;
 		}
 
+		/* is_destroyed is ignored here because we don't have any memory
+		 * allocation to clean up for the omit_data case
+		 */
 		list_add_tail(&event_sub->event_list, &ev_file->event_list);
 		spin_unlock_irqrestore(&ev_file->lock, flags);
 		wake_up_interruptible(&ev_file->poll_wait);
@@ -2348,7 +2346,10 @@ static int deliver_event(struct devx_event_subscription *event_sub,
 	memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe));
 
 	spin_lock_irqsave(&ev_file->lock, flags);
-	list_add_tail(&event_data->list, &ev_file->event_list);
+	if (!ev_file->is_destroyed)
+		list_add_tail(&event_data->list, &ev_file->event_list);
+	else
+		kfree(event_data);
 	spin_unlock_irqrestore(&ev_file->lock, flags);
 	wake_up_interruptible(&ev_file->poll_wait);
 
@@ -2361,17 +2362,10 @@ static void dispatch_event_fd(struct list_head *fd_list,
 	struct devx_event_subscription *item;
 
 	list_for_each_entry_rcu(item, fd_list, xa_list) {
-		if (!get_file_rcu(item->filp))
-			continue;
-
-		if (item->eventfd) {
+		if (item->eventfd)
 			eventfd_signal(item->eventfd, 1);
-			fput(item->filp);
-			continue;
-		}
-
-		deliver_event(item, data);
-		fput(item->filp);
+		else
+			deliver_event(item, data);
 	}
 }
 
@@ -2509,23 +2503,6 @@ static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf,
 	return ret;
 }
 
-static int devx_async_cmd_event_close(struct inode *inode, struct file *filp)
-{
-	struct ib_uobject *uobj = filp->private_data;
-	struct devx_async_cmd_event_file *comp_ev_file = container_of(
-		uobj, struct devx_async_cmd_event_file, uobj);
-	struct devx_async_data *entry, *tmp;
-
-	spin_lock_irq(&comp_ev_file->ev_queue.lock);
-	list_for_each_entry_safe(entry, tmp,
-				 &comp_ev_file->ev_queue.event_list, list)
-		kvfree(entry);
-	spin_unlock_irq(&comp_ev_file->ev_queue.lock);
-
-	uverbs_close_fd(filp);
-	return 0;
-}
-
 static __poll_t devx_async_cmd_event_poll(struct file *filp,
 					      struct poll_table_struct *wait)
 {
@@ -2549,7 +2526,7 @@ static const struct file_operations devx_async_cmd_event_fops = {
 	.owner	 = THIS_MODULE,
 	.read	 = devx_async_cmd_event_read,
 	.poll    = devx_async_cmd_event_poll,
-	.release = devx_async_cmd_event_close,
+	.release = uverbs_uobject_fd_release,
 	.llseek	 = no_llseek,
 };
 
@@ -2653,81 +2630,85 @@ static __poll_t devx_async_event_poll(struct file *filp,
 	return pollflags;
 }
 
-static int devx_async_event_close(struct inode *inode, struct file *filp)
+static void devx_free_subscription(struct rcu_head *rcu)
 {
-	struct devx_async_event_file *ev_file = filp->private_data;
-	struct devx_event_subscription *event_sub, *event_sub_tmp;
-	struct devx_async_event_data *entry, *tmp;
-	struct mlx5_ib_dev *dev = ev_file->dev;
-
-	mutex_lock(&dev->devx_event_table.event_xa_lock);
-	/* delete the subscriptions which are related to this FD */
-	list_for_each_entry_safe(event_sub, event_sub_tmp,
-				 &ev_file->subscribed_events_list, file_list) {
-		devx_cleanup_subscription(dev, event_sub);
-		if (event_sub->eventfd)
-			eventfd_ctx_put(event_sub->eventfd);
-
-		list_del_rcu(&event_sub->file_list);
-		/* subscription may not be used by the read API any more */
-		kfree_rcu(event_sub, rcu);
-	}
-
-	mutex_unlock(&dev->devx_event_table.event_xa_lock);
+	struct devx_event_subscription *event_sub =
+		container_of(rcu, struct devx_event_subscription, rcu);
 
-	/* free the pending events allocation */
-	if (!ev_file->omit_data) {
-		spin_lock_irq(&ev_file->lock);
-		list_for_each_entry_safe(entry, tmp,
-					 &ev_file->event_list, list)
-			kfree(entry); /* read can't come any more */
-		spin_unlock_irq(&ev_file->lock);
-	}
-
-	uverbs_close_fd(filp);
-	put_device(&dev->ib_dev.dev);
-	return 0;
+	if (event_sub->eventfd)
+		eventfd_ctx_put(event_sub->eventfd);
+	uverbs_uobject_put(&event_sub->ev_file->uobj);
+	kfree(event_sub);
 }
 
 static const struct file_operations devx_async_event_fops = {
 	.owner	 = THIS_MODULE,
 	.read	 = devx_async_event_read,
 	.poll    = devx_async_event_poll,
-	.release = devx_async_event_close,
+	.release = uverbs_uobject_fd_release,
 	.llseek	 = no_llseek,
 };
 
-static int devx_hot_unplug_async_cmd_event_file(struct ib_uobject *uobj,
-						   enum rdma_remove_reason why)
+static int devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj,
+					     enum rdma_remove_reason why)
 {
 	struct devx_async_cmd_event_file *comp_ev_file =
 		container_of(uobj, struct devx_async_cmd_event_file,
 			     uobj);
 	struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
+	struct devx_async_data *entry, *tmp;
 
 	spin_lock_irq(&ev_queue->lock);
 	ev_queue->is_destroyed = 1;
 	spin_unlock_irq(&ev_queue->lock);
-
-	if (why == RDMA_REMOVE_DRIVER_REMOVE)
-		wake_up_interruptible(&ev_queue->poll_wait);
+	wake_up_interruptible(&ev_queue->poll_wait);
 
 	mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx);
+
+	spin_lock_irq(&comp_ev_file->ev_queue.lock);
+	list_for_each_entry_safe(entry, tmp,
+				 &comp_ev_file->ev_queue.event_list, list)
+		kvfree(entry);
+	spin_unlock_irq(&comp_ev_file->ev_queue.lock);
 	return 0;
 };
 
-static int devx_hot_unplug_async_event_file(struct ib_uobject *uobj,
-					    enum rdma_remove_reason why)
+static int devx_async_event_destroy_uobj(struct ib_uobject *uobj,
+					 enum rdma_remove_reason why)
 {
 	struct devx_async_event_file *ev_file =
 		container_of(uobj, struct devx_async_event_file,
 			     uobj);
+	struct devx_event_subscription *event_sub, *event_sub_tmp;
+	struct devx_async_event_data *entry, *tmp;
+	struct mlx5_ib_dev *dev = ev_file->dev;
 
 	spin_lock_irq(&ev_file->lock);
 	ev_file->is_destroyed = 1;
 	spin_unlock_irq(&ev_file->lock);
-
 	wake_up_interruptible(&ev_file->poll_wait);
+
+	mutex_lock(&dev->devx_event_table.event_xa_lock);
+	/* delete the subscriptions which are related to this FD */
+	list_for_each_entry_safe(event_sub, event_sub_tmp,
+				 &ev_file->subscribed_events_list, file_list) {
+		devx_cleanup_subscription(dev, event_sub);
+		list_del_rcu(&event_sub->file_list);
+		/* subscription may not be used by the read API any more */
+		call_rcu(&event_sub->rcu, devx_free_subscription);
+	}
+	mutex_unlock(&dev->devx_event_table.event_xa_lock);
+
+	/* free the pending events allocation */
+	if (!ev_file->omit_data) {
+		spin_lock_irq(&ev_file->lock);
+		list_for_each_entry_safe(entry, tmp,
+					 &ev_file->event_list, list)
+			kfree(entry); /* read can't come any more */
+		spin_unlock_irq(&ev_file->lock);
+	}
+
+	put_device(&dev->ib_dev.dev);
 	return 0;
 };
 
@@ -2913,7 +2894,7 @@ DECLARE_UVERBS_NAMED_METHOD(
 DECLARE_UVERBS_NAMED_OBJECT(
 	MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
 	UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file),
-			     devx_hot_unplug_async_cmd_event_file,
+			     devx_async_cmd_event_destroy_uobj,
 			     &devx_async_cmd_event_fops, "[devx_async_cmd]",
 			     O_RDONLY),
 	&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC));
@@ -2931,7 +2912,7 @@ DECLARE_UVERBS_NAMED_METHOD(
 DECLARE_UVERBS_NAMED_OBJECT(
 	MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
 	UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file),
-			     devx_hot_unplug_async_event_file,
+			     devx_async_event_destroy_uobj,
 			     &devx_async_event_fops, "[devx_async_event]",
 			     O_RDONLY),
 	&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC));
diff --git a/drivers/infiniband/hw/mlx5/gsi.c b/drivers/infiniband/hw/mlx5/gsi.c
index ac4d8d1b9a07..1ae6fd95acaa 100644
--- a/drivers/infiniband/hw/mlx5/gsi.c
+++ b/drivers/infiniband/hw/mlx5/gsi.c
@@ -507,8 +507,7 @@ int mlx5_ib_gsi_post_send(struct ib_qp *qp, const struct ib_send_wr *wr,
 		ret = ib_post_send(tx_qp, &cur_wr.wr, bad_wr);
 		if (ret) {
 			/* Undo the effect of adding the outstanding wr */
-			gsi->outstanding_pi = (gsi->outstanding_pi - 1) %
-					      gsi->cap.max_send_wr;
+			gsi->outstanding_pi--;
 			goto err;
 		}
 		spin_unlock_irqrestore(&gsi->lock, flags);
diff --git a/drivers/infiniband/hw/mlx5/ib_virt.c b/drivers/infiniband/hw/mlx5/ib_virt.c
index 4f0edd4832bd..b61165359954 100644
--- a/drivers/infiniband/hw/mlx5/ib_virt.c
+++ b/drivers/infiniband/hw/mlx5/ib_virt.c
@@ -164,8 +164,10 @@ static int set_vf_node_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 	in->field_select = MLX5_HCA_VPORT_SEL_NODE_GUID;
 	in->node_guid = guid;
 	err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
-	if (!err)
+	if (!err) {
 		vfs_ctx[vf].node_guid = guid;
+		vfs_ctx[vf].node_guid_valid = 1;
+	}
 	kfree(in);
 	return err;
 }
@@ -185,8 +187,10 @@ static int set_vf_port_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 	in->field_select = MLX5_HCA_VPORT_SEL_PORT_GUID;
 	in->port_guid = guid;
 	err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
-	if (!err)
+	if (!err) {
 		vfs_ctx[vf].port_guid = guid;
+		vfs_ctx[vf].port_guid_valid = 1;
+	}
 	kfree(in);
 	return err;
 }
@@ -208,20 +212,12 @@ int mlx5_ib_get_vf_guid(struct ib_device *device, int vf, u8 port,
 {
 	struct mlx5_ib_dev *dev = to_mdev(device);
 	struct mlx5_core_dev *mdev = dev->mdev;
-	struct mlx5_hca_vport_context *rep;
-	int err;
-
-	rep = kzalloc(sizeof(*rep), GFP_KERNEL);
-	if (!rep)
-		return -ENOMEM;
+	struct mlx5_vf_context *vfs_ctx = mdev->priv.sriov.vfs_ctx;
 
-	err = mlx5_query_hca_vport_context(mdev, 1, 1, vf+1, rep);
-	if (err)
-		goto ex;
+	node_guid->guid =
+		vfs_ctx[vf].node_guid_valid ? vfs_ctx[vf].node_guid : 0;
+	port_guid->guid =
+		vfs_ctx[vf].port_guid_valid ? vfs_ctx[vf].port_guid : 0;
 
-	port_guid->guid = rep->port_guid;
-	node_guid->guid = rep->node_guid;
-ex:
-	kfree(rep);
-	return err;
+	return 0;
 }
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index ab4ec33409b8..e874d688d040 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -2094,6 +2094,7 @@ static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry)
 {
 	struct mlx5_user_mmap_entry *mentry = to_mmmap(entry);
 	struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device);
+	struct mlx5_var_table *var_table = &dev->var_table;
 	struct mlx5_ib_dm *mdm;
 
 	switch (mentry->mmap_flag) {
@@ -2103,6 +2104,12 @@ static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry)
 				       mdm->size);
 		kfree(mdm);
 		break;
+	case MLX5_IB_MMAP_TYPE_VAR:
+		mutex_lock(&var_table->bitmap_lock);
+		clear_bit(mentry->page_idx, var_table->bitmap);
+		mutex_unlock(&var_table->bitmap_lock);
+		kfree(mentry);
+		break;
 	default:
 		WARN_ON(true);
 	}
@@ -2262,7 +2269,10 @@ static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev,
 
 	mentry = to_mmmap(entry);
 	pfn = (mentry->address >> PAGE_SHIFT);
-	prot = pgprot_writecombine(vma->vm_page_prot);
+	if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR)
+		prot = pgprot_noncached(vma->vm_page_prot);
+	else
+		prot = pgprot_writecombine(vma->vm_page_prot);
 	ret = rdma_user_mmap_io(ucontext, vma, pfn,
 				entry->npages * PAGE_SIZE,
 				prot,
@@ -2271,6 +2281,15 @@ static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev,
 	return ret;
 }
 
+static u64 mlx5_entry_to_mmap_offset(struct mlx5_user_mmap_entry *entry)
+{
+	u16 cmd = entry->rdma_entry.start_pgoff >> 16;
+	u16 index = entry->rdma_entry.start_pgoff & 0xFFFF;
+
+	return (((index >> 8) << 16) | (cmd << MLX5_IB_MMAP_CMD_SHIFT) |
+		(index & 0xFF)) << PAGE_SHIFT;
+}
+
 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
 {
 	struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
@@ -5368,6 +5387,14 @@ static const struct mlx5_ib_counter extended_err_cnts[] = {
 	INIT_Q_COUNTER(req_cqe_flush_error),
 };
 
+static const struct mlx5_ib_counter roce_accl_cnts[] = {
+	INIT_Q_COUNTER(roce_adp_retrans),
+	INIT_Q_COUNTER(roce_adp_retrans_to),
+	INIT_Q_COUNTER(roce_slow_restart),
+	INIT_Q_COUNTER(roce_slow_restart_cnps),
+	INIT_Q_COUNTER(roce_slow_restart_trans),
+};
+
 #define INIT_EXT_PPCNT_COUNTER(_name)		\
 	{ .name = #_name, .offset =	\
 	MLX5_BYTE_OFF(ppcnt_reg, \
@@ -5416,6 +5443,9 @@ static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
 	if (MLX5_CAP_GEN(dev->mdev, enhanced_error_q_counters))
 		num_counters += ARRAY_SIZE(extended_err_cnts);
 
+	if (MLX5_CAP_GEN(dev->mdev, roce_accl))
+		num_counters += ARRAY_SIZE(roce_accl_cnts);
+
 	cnts->num_q_counters = num_counters;
 
 	if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
@@ -5476,6 +5506,13 @@ static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
 		}
 	}
 
+	if (MLX5_CAP_GEN(dev->mdev, roce_accl)) {
+		for (i = 0; i < ARRAY_SIZE(roce_accl_cnts); i++, j++) {
+			names[j] = roce_accl_cnts[i].name;
+			offsets[j] = roce_accl_cnts[i].offset;
+		}
+	}
+
 	if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) {
 		for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) {
 			names[j] = cong_cnts[i].name;
@@ -6051,6 +6088,145 @@ static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev)
 	mlx5_nic_vport_disable_roce(dev->mdev);
 }
 
+static int var_obj_cleanup(struct ib_uobject *uobject,
+			   enum rdma_remove_reason why,
+			   struct uverbs_attr_bundle *attrs)
+{
+	struct mlx5_user_mmap_entry *obj = uobject->object;
+
+	rdma_user_mmap_entry_remove(&obj->rdma_entry);
+	return 0;
+}
+
+static struct mlx5_user_mmap_entry *
+alloc_var_entry(struct mlx5_ib_ucontext *c)
+{
+	struct mlx5_user_mmap_entry *entry;
+	struct mlx5_var_table *var_table;
+	u32 page_idx;
+	int err;
+
+	var_table = &to_mdev(c->ibucontext.device)->var_table;
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_lock(&var_table->bitmap_lock);
+	page_idx = find_first_zero_bit(var_table->bitmap,
+				       var_table->num_var_hw_entries);
+	if (page_idx >= var_table->num_var_hw_entries) {
+		err = -ENOSPC;
+		mutex_unlock(&var_table->bitmap_lock);
+		goto end;
+	}
+
+	set_bit(page_idx, var_table->bitmap);
+	mutex_unlock(&var_table->bitmap_lock);
+
+	entry->address = var_table->hw_start_addr +
+				(page_idx * var_table->stride_size);
+	entry->page_idx = page_idx;
+	entry->mmap_flag = MLX5_IB_MMAP_TYPE_VAR;
+
+	err = rdma_user_mmap_entry_insert_range(
+		&c->ibucontext, &entry->rdma_entry, var_table->stride_size,
+		MLX5_IB_MMAP_OFFSET_START << 16,
+		(MLX5_IB_MMAP_OFFSET_END << 16) + (1UL << 16) - 1);
+	if (err)
+		goto err_insert;
+
+	return entry;
+
+err_insert:
+	mutex_lock(&var_table->bitmap_lock);
+	clear_bit(page_idx, var_table->bitmap);
+	mutex_unlock(&var_table->bitmap_lock);
+end:
+	kfree(entry);
+	return ERR_PTR(err);
+}
+
+static int UVERBS_HANDLER(MLX5_IB_METHOD_VAR_OBJ_ALLOC)(
+	struct uverbs_attr_bundle *attrs)
+{
+	struct ib_uobject *uobj = uverbs_attr_get_uobject(
+		attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE);
+	struct mlx5_ib_ucontext *c;
+	struct mlx5_user_mmap_entry *entry;
+	u64 mmap_offset;
+	u32 length;
+	int err;
+
+	c = to_mucontext(ib_uverbs_get_ucontext(attrs));
+	if (IS_ERR(c))
+		return PTR_ERR(c);
+
+	entry = alloc_var_entry(c);
+	if (IS_ERR(entry))
+		return PTR_ERR(entry);
+
+	mmap_offset = mlx5_entry_to_mmap_offset(entry);
+	length = entry->rdma_entry.npages * PAGE_SIZE;
+	uobj->object = entry;
+
+	err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET,
+			     &mmap_offset, sizeof(mmap_offset));
+	if (err)
+		goto err;
+
+	err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID,
+			     &entry->page_idx, sizeof(entry->page_idx));
+	if (err)
+		goto err;
+
+	err = uverbs_copy_to(attrs, MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH,
+			     &length, sizeof(length));
+	if (err)
+		goto err;
+
+	return 0;
+
+err:
+	rdma_user_mmap_entry_remove(&entry->rdma_entry);
+	return err;
+}
+
+DECLARE_UVERBS_NAMED_METHOD(
+	MLX5_IB_METHOD_VAR_OBJ_ALLOC,
+	UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE,
+			MLX5_IB_OBJECT_VAR,
+			UVERBS_ACCESS_NEW,
+			UA_MANDATORY),
+	UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID,
+			   UVERBS_ATTR_TYPE(u32),
+			   UA_MANDATORY),
+	UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH,
+			   UVERBS_ATTR_TYPE(u32),
+			   UA_MANDATORY),
+	UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET,
+			    UVERBS_ATTR_TYPE(u64),
+			    UA_MANDATORY));
+
+DECLARE_UVERBS_NAMED_METHOD_DESTROY(
+	MLX5_IB_METHOD_VAR_OBJ_DESTROY,
+	UVERBS_ATTR_IDR(MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE,
+			MLX5_IB_OBJECT_VAR,
+			UVERBS_ACCESS_DESTROY,
+			UA_MANDATORY));
+
+DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_VAR,
+			    UVERBS_TYPE_ALLOC_IDR(var_obj_cleanup),
+			    &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_ALLOC),
+			    &UVERBS_METHOD(MLX5_IB_METHOD_VAR_OBJ_DESTROY));
+
+static bool var_is_supported(struct ib_device *device)
+{
+	struct mlx5_ib_dev *dev = to_mdev(device);
+
+	return (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
+			MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q);
+}
+
 ADD_UVERBS_ATTRIBUTES_SIMPLE(
 	mlx5_ib_dm,
 	UVERBS_OBJECT_DM,
@@ -6073,14 +6249,14 @@ ADD_UVERBS_ATTRIBUTES_SIMPLE(
 			     enum mlx5_ib_uapi_flow_action_flags));
 
 static const struct uapi_definition mlx5_ib_defs[] = {
-#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
 	UAPI_DEF_CHAIN(mlx5_ib_devx_defs),
 	UAPI_DEF_CHAIN(mlx5_ib_flow_defs),
-#endif
 
 	UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
 				&mlx5_ib_flow_action),
 	UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm),
+	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_VAR,
+				UAPI_DEF_IS_OBJ_SUPPORTED(var_is_supported)),
 	{}
 };
 
@@ -6352,6 +6528,35 @@ static const struct ib_device_ops mlx5_ib_dev_dm_ops = {
 	.reg_dm_mr = mlx5_ib_reg_dm_mr,
 };
 
+static int mlx5_ib_init_var_table(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_core_dev *mdev = dev->mdev;
+	struct mlx5_var_table *var_table = &dev->var_table;
+	u8 log_doorbell_bar_size;
+	u8 log_doorbell_stride;
+	u64 bar_size;
+
+	log_doorbell_bar_size = MLX5_CAP_DEV_VDPA_EMULATION(mdev,
+					log_doorbell_bar_size);
+	log_doorbell_stride = MLX5_CAP_DEV_VDPA_EMULATION(mdev,
+					log_doorbell_stride);
+	var_table->hw_start_addr = dev->mdev->bar_addr +
+				MLX5_CAP64_DEV_VDPA_EMULATION(mdev,
+					doorbell_bar_offset);
+	bar_size = (1ULL << log_doorbell_bar_size) * 4096;
+	var_table->stride_size = 1ULL << log_doorbell_stride;
+	var_table->num_var_hw_entries = bar_size / var_table->stride_size;
+	mutex_init(&var_table->bitmap_lock);
+	var_table->bitmap = bitmap_zalloc(var_table->num_var_hw_entries,
+					  GFP_KERNEL);
+	return (var_table->bitmap) ? 0 : -ENOMEM;
+}
+
+static void mlx5_ib_stage_caps_cleanup(struct mlx5_ib_dev *dev)
+{
+	bitmap_free(dev->var_table.bitmap);
+}
+
 static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
 {
 	struct mlx5_core_dev *mdev = dev->mdev;
@@ -6439,6 +6644,13 @@ static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
 	     MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
 		mutex_init(&dev->lb.mutex);
 
+	if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
+			MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) {
+		err = mlx5_ib_init_var_table(dev);
+		if (err)
+			return err;
+	}
+
 	dev->ib_dev.use_cq_dim = true;
 
 	return 0;
@@ -6742,6 +6954,8 @@ void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
 		      const struct mlx5_ib_profile *profile,
 		      int stage)
 {
+	dev->ib_active = false;
+
 	/* Number of stages to cleanup */
 	while (stage) {
 		stage--;
@@ -6787,7 +7001,7 @@ static const struct mlx5_ib_profile pf_profile = {
 		     mlx5_ib_stage_flow_db_cleanup),
 	STAGE_CREATE(MLX5_IB_STAGE_CAPS,
 		     mlx5_ib_stage_caps_init,
-		     NULL),
+		     mlx5_ib_stage_caps_cleanup),
 	STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
 		     mlx5_ib_stage_non_default_cb,
 		     NULL),
@@ -6844,7 +7058,7 @@ const struct mlx5_ib_profile raw_eth_profile = {
 		     mlx5_ib_stage_flow_db_cleanup),
 	STAGE_CREATE(MLX5_IB_STAGE_CAPS,
 		     mlx5_ib_stage_caps_init,
-		     NULL),
+		     mlx5_ib_stage_caps_cleanup),
 	STAGE_CREATE(MLX5_IB_STAGE_NON_DEFAULT_CB,
 		     mlx5_ib_stage_raw_eth_non_default_cb,
 		     NULL),
diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c
index 048f4e974a61..b90a3649e7d1 100644
--- a/drivers/infiniband/hw/mlx5/mem.c
+++ b/drivers/infiniband/hw/mlx5/mem.c
@@ -101,18 +101,6 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr,
 	*count = i;
 }
 
-static u64 umem_dma_to_mtt(dma_addr_t umem_dma)
-{
-	u64 mtt_entry = umem_dma & ODP_DMA_ADDR_MASK;
-
-	if (umem_dma & ODP_READ_ALLOWED_BIT)
-		mtt_entry |= MLX5_IB_MTT_READ;
-	if (umem_dma & ODP_WRITE_ALLOWED_BIT)
-		mtt_entry |= MLX5_IB_MTT_WRITE;
-
-	return mtt_entry;
-}
-
 /*
  * Populate the given array with bus addresses from the umem.
  *
@@ -139,19 +127,6 @@ void __mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
 	struct scatterlist *sg;
 	int entry;
 
-	if (umem->is_odp) {
-		WARN_ON(shift != 0);
-		WARN_ON(access_flags != (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE));
-
-		for (i = 0; i < num_pages; ++i) {
-			dma_addr_t pa =
-				to_ib_umem_odp(umem)->dma_list[offset + i];
-
-			pas[i] = cpu_to_be64(umem_dma_to_mtt(pa));
-		}
-		return;
-	}
-
 	i = 0;
 	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
 		len = sg_dma_len(sg) >> PAGE_SHIFT;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 77d495b2032d..d9bffcc93587 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -72,6 +72,11 @@
 #define MLX5_MKEY_PAGE_SHIFT_MASK __mlx5_mask(mkc, log_page_size)
 
 enum {
+	MLX5_IB_MMAP_OFFSET_START = 9,
+	MLX5_IB_MMAP_OFFSET_END = 255,
+};
+
+enum {
 	MLX5_IB_MMAP_CMD_SHIFT	= 8,
 	MLX5_IB_MMAP_CMD_MASK	= 0xff,
 };
@@ -120,6 +125,7 @@ enum {
 
 enum mlx5_ib_mmap_type {
 	MLX5_IB_MMAP_TYPE_MEMIC = 1,
+	MLX5_IB_MMAP_TYPE_VAR = 2,
 };
 
 #define MLX5_LOG_SW_ICM_BLOCK_SIZE(dev)                                        \
@@ -563,6 +569,7 @@ struct mlx5_user_mmap_entry {
 	struct rdma_user_mmap_entry rdma_entry;
 	u8 mmap_flag;
 	u64 address;
+	u32 page_idx;
 };
 
 struct mlx5_ib_dm {
@@ -959,6 +966,15 @@ struct mlx5_devx_event_table {
 	struct xarray event_xa;
 };
 
+struct mlx5_var_table {
+	/* serialize updating the bitmap */
+	struct mutex bitmap_lock;
+	unsigned long *bitmap;
+	u64 hw_start_addr;
+	u32 stride_size;
+	u64 num_var_hw_entries;
+};
+
 struct mlx5_ib_dev {
 	struct ib_device		ib_dev;
 	struct mlx5_core_dev		*mdev;
@@ -1013,6 +1029,7 @@ struct mlx5_ib_dev {
 	struct mlx5_srq_table   srq_table;
 	struct mlx5_async_ctx   async_ctx;
 	struct mlx5_devx_event_table devx_event_table;
+	struct mlx5_var_table var_table;
 
 	struct xarray sig_mrs;
 };
@@ -1276,8 +1293,8 @@ void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev);
 int __init mlx5_ib_odp_init(void);
 void mlx5_ib_odp_cleanup(void);
 void mlx5_odp_init_mr_cache_entry(struct mlx5_cache_ent *ent);
-void mlx5_odp_populate_klm(struct mlx5_klm *pklm, size_t offset,
-			   size_t nentries, struct mlx5_ib_mr *mr, int flags);
+void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
+			   struct mlx5_ib_mr *mr, int flags);
 
 int mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
 			       enum ib_uverbs_advise_mr_advice advice,
@@ -1293,9 +1310,8 @@ static inline void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev) {}
 static inline int mlx5_ib_odp_init(void) { return 0; }
 static inline void mlx5_ib_odp_cleanup(void)				    {}
 static inline void mlx5_odp_init_mr_cache_entry(struct mlx5_cache_ent *ent) {}
-static inline void mlx5_odp_populate_klm(struct mlx5_klm *pklm, size_t offset,
-					 size_t nentries, struct mlx5_ib_mr *mr,
-					 int flags) {}
+static inline void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
+					 struct mlx5_ib_mr *mr, int flags) {}
 
 static inline int
 mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
@@ -1363,14 +1379,14 @@ int mlx5_ib_fill_res_entry(struct sk_buff *msg,
 int mlx5_ib_fill_stat_entry(struct sk_buff *msg,
 			    struct rdma_restrack_entry *res);
 
+extern const struct uapi_definition mlx5_ib_devx_defs[];
+extern const struct uapi_definition mlx5_ib_flow_defs[];
+
 #if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
 int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);
 void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid);
 void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev);
 void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev);
-const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void);
-extern const struct uapi_definition mlx5_ib_devx_defs[];
-extern const struct uapi_definition mlx5_ib_flow_defs[];
 struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
 	struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
 	struct mlx5_flow_context *flow_context,
@@ -1378,7 +1394,6 @@ struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
 	void *cmd_in, int inlen, int dest_id, int dest_type);
 bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type);
 bool mlx5_ib_devx_is_flow_counter(void *obj, u32 offset, u32 *counter_id);
-int mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root);
 void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction);
 #else
 static inline int
@@ -1507,7 +1522,7 @@ int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter);
 u16 mlx5_ib_get_counters_id(struct mlx5_ib_dev *dev, u8 port_num);
 
 static inline bool mlx5_ib_can_use_umr(struct mlx5_ib_dev *dev,
-				       bool do_modify_atomic)
+				       bool do_modify_atomic, int access_flags)
 {
 	if (MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled))
 		return false;
@@ -1517,6 +1532,9 @@ static inline bool mlx5_ib_can_use_umr(struct mlx5_ib_dev *dev,
 	    MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled))
 		return false;
 
+	if (access_flags & IB_ACCESS_RELAXED_ORDERING)
+		return false;
+
 	return true;
 }
 
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 44a0ee6bd9f1..6fa0a83c19de 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -147,7 +147,7 @@ static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
 			break;
 		}
 		mr->order = ent->order;
-		mr->allocated_from_cache = 1;
+		mr->allocated_from_cache = true;
 		mr->dev = dev;
 
 		MLX5_SET(mkc, mkc, free, 1);
@@ -661,12 +661,21 @@ int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev)
 static void set_mkc_access_pd_addr_fields(void *mkc, int acc, u64 start_addr,
 					  struct ib_pd *pd)
 {
+	struct mlx5_ib_dev *dev = to_mdev(pd->device);
+
 	MLX5_SET(mkc, mkc, a, !!(acc & IB_ACCESS_REMOTE_ATOMIC));
 	MLX5_SET(mkc, mkc, rw, !!(acc & IB_ACCESS_REMOTE_WRITE));
 	MLX5_SET(mkc, mkc, rr, !!(acc & IB_ACCESS_REMOTE_READ));
 	MLX5_SET(mkc, mkc, lw, !!(acc & IB_ACCESS_LOCAL_WRITE));
 	MLX5_SET(mkc, mkc, lr, 1);
 
+	if (MLX5_CAP_GEN(dev->mdev, relaxed_ordering_write))
+		MLX5_SET(mkc, mkc, relaxed_ordering_write,
+			 !!(acc & IB_ACCESS_RELAXED_ORDERING));
+	if (MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read))
+		MLX5_SET(mkc, mkc, relaxed_ordering_read,
+			 !!(acc & IB_ACCESS_RELAXED_ORDERING));
+
 	MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
 	MLX5_SET(mkc, mkc, qpn, 0xffffff);
 	MLX5_SET64(mkc, mkc, start_addr, start_addr);
@@ -867,36 +876,6 @@ static struct mlx5_ib_mr *alloc_mr_from_cache(
 	return mr;
 }
 
-static inline int populate_xlt(struct mlx5_ib_mr *mr, int idx, int npages,
-			       void *xlt, int page_shift, size_t size,
-			       int flags)
-{
-	struct mlx5_ib_dev *dev = mr->dev;
-	struct ib_umem *umem = mr->umem;
-
-	if (flags & MLX5_IB_UPD_XLT_INDIRECT) {
-		if (!umr_can_use_indirect_mkey(dev))
-			return -EPERM;
-		mlx5_odp_populate_klm(xlt, idx, npages, mr, flags);
-		return npages;
-	}
-
-	npages = min_t(size_t, npages, ib_umem_num_pages(umem) - idx);
-
-	if (!(flags & MLX5_IB_UPD_XLT_ZAP)) {
-		__mlx5_ib_populate_pas(dev, umem, page_shift,
-				       idx, npages, xlt,
-				       MLX5_IB_MTT_PRESENT);
-		/* Clear padding after the pages
-		 * brought from the umem.
-		 */
-		memset(xlt + (npages * sizeof(struct mlx5_mtt)), 0,
-		       size - npages * sizeof(struct mlx5_mtt));
-	}
-
-	return npages;
-}
-
 #define MLX5_MAX_UMR_CHUNK ((1 << (MLX5_MAX_UMR_SHIFT + 4)) - \
 			    MLX5_UMR_MTT_ALIGNMENT)
 #define MLX5_SPARE_UMR_CHUNK 0x10000
@@ -920,6 +899,7 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
 	size_t pages_mapped = 0;
 	size_t pages_to_map = 0;
 	size_t pages_iter = 0;
+	size_t size_to_map = 0;
 	gfp_t gfp;
 	bool use_emergency_page = false;
 
@@ -966,6 +946,15 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
 		goto free_xlt;
 	}
 
+	if (mr->umem->is_odp) {
+		if (!(flags & MLX5_IB_UPD_XLT_INDIRECT)) {
+			struct ib_umem_odp *odp = to_ib_umem_odp(mr->umem);
+			size_t max_pages = ib_umem_odp_num_pages(odp) - idx;
+
+			pages_to_map = min_t(size_t, pages_to_map, max_pages);
+		}
+	}
+
 	sg.addr = dma;
 	sg.lkey = dev->umrc.pd->local_dma_lkey;
 
@@ -988,14 +977,22 @@ int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
 	     pages_mapped < pages_to_map && !err;
 	     pages_mapped += pages_iter, idx += pages_iter) {
 		npages = min_t(int, pages_iter, pages_to_map - pages_mapped);
+		size_to_map = npages * desc_size;
 		dma_sync_single_for_cpu(ddev, dma, size, DMA_TO_DEVICE);
-		npages = populate_xlt(mr, idx, npages, xlt,
-				      page_shift, size, flags);
-
+		if (mr->umem->is_odp) {
+			mlx5_odp_populate_xlt(xlt, idx, npages, mr, flags);
+		} else {
+			__mlx5_ib_populate_pas(dev, mr->umem, page_shift, idx,
+					       npages, xlt,
+					       MLX5_IB_MTT_PRESENT);
+			/* Clear padding after the pages
+			 * brought from the umem.
+			 */
+			memset(xlt + size_to_map, 0, size - size_to_map);
+		}
 		dma_sync_single_for_device(ddev, dma, size, DMA_TO_DEVICE);
 
-		sg.length = ALIGN(npages * desc_size,
-				  MLX5_UMR_MTT_ALIGNMENT);
+		sg.length = ALIGN(size_to_map, MLX5_UMR_MTT_ALIGNMENT);
 
 		if (pages_mapped + pages_iter >= pages_to_map) {
 			if (flags & MLX5_IB_UPD_XLT_ENABLE)
@@ -1074,6 +1071,12 @@ static struct mlx5_ib_mr *reg_create(struct ib_mr *ibmr, struct ib_pd *pd,
 	mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
 	MLX5_SET(mkc, mkc, free, !populate);
 	MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MTT);
+	if (MLX5_CAP_GEN(dev->mdev, relaxed_ordering_write))
+		MLX5_SET(mkc, mkc, relaxed_ordering_write,
+			 !!(access_flags & IB_ACCESS_RELAXED_ORDERING));
+	if (MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read))
+		MLX5_SET(mkc, mkc, relaxed_ordering_read,
+			 !!(access_flags & IB_ACCESS_RELAXED_ORDERING));
 	MLX5_SET(mkc, mkc, a, !!(access_flags & IB_ACCESS_REMOTE_ATOMIC));
 	MLX5_SET(mkc, mkc, rw, !!(access_flags & IB_ACCESS_REMOTE_WRITE));
 	MLX5_SET(mkc, mkc, rr, !!(access_flags & IB_ACCESS_REMOTE_READ));
@@ -1264,7 +1267,7 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 	if (err < 0)
 		return ERR_PTR(err);
 
-	use_umr = mlx5_ib_can_use_umr(dev, true);
+	use_umr = mlx5_ib_can_use_umr(dev, true, access_flags);
 
 	if (order <= mr_cache_max_order(dev) && use_umr) {
 		mr = alloc_mr_from_cache(pd, umem, virt_addr, length, ncont,
@@ -1431,7 +1434,7 @@ int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
 			goto err;
 	}
 
-	if (!mlx5_ib_can_use_umr(dev, true) ||
+	if (!mlx5_ib_can_use_umr(dev, true, access_flags) ||
 	    (flags & IB_MR_REREG_TRANS && !use_umr_mtt_update(mr, addr, len))) {
 		/*
 		 * UMR can't be used - MKey needs to be replaced.
@@ -1452,7 +1455,7 @@ int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
 			goto err;
 		}
 
-		mr->allocated_from_cache = 0;
+		mr->allocated_from_cache = false;
 	} else {
 		/*
 		 * Send a UMR WQE
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index 0afb0042bd53..4216814ba871 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -93,8 +93,8 @@ struct mlx5_pagefault {
 
 static u64 mlx5_imr_ksm_entries;
 
-void mlx5_odp_populate_klm(struct mlx5_klm *pklm, size_t idx, size_t nentries,
-			   struct mlx5_ib_mr *imr, int flags)
+static void populate_klm(struct mlx5_klm *pklm, size_t idx, size_t nentries,
+			struct mlx5_ib_mr *imr, int flags)
 {
 	struct mlx5_klm *end = pklm + nentries;
 
@@ -144,6 +144,44 @@ void mlx5_odp_populate_klm(struct mlx5_klm *pklm, size_t idx, size_t nentries,
 	}
 }
 
+static u64 umem_dma_to_mtt(dma_addr_t umem_dma)
+{
+	u64 mtt_entry = umem_dma & ODP_DMA_ADDR_MASK;
+
+	if (umem_dma & ODP_READ_ALLOWED_BIT)
+		mtt_entry |= MLX5_IB_MTT_READ;
+	if (umem_dma & ODP_WRITE_ALLOWED_BIT)
+		mtt_entry |= MLX5_IB_MTT_WRITE;
+
+	return mtt_entry;
+}
+
+static void populate_mtt(__be64 *pas, size_t idx, size_t nentries,
+			 struct mlx5_ib_mr *mr, int flags)
+{
+	struct ib_umem_odp *odp = to_ib_umem_odp(mr->umem);
+	dma_addr_t pa;
+	size_t i;
+
+	if (flags & MLX5_IB_UPD_XLT_ZAP)
+		return;
+
+	for (i = 0; i < nentries; i++) {
+		pa = odp->dma_list[idx + i];
+		pas[i] = cpu_to_be64(umem_dma_to_mtt(pa));
+	}
+}
+
+void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
+			   struct mlx5_ib_mr *mr, int flags)
+{
+	if (flags & MLX5_IB_UPD_XLT_INDIRECT) {
+		populate_klm(xlt, idx, nentries, mr, flags);
+	} else {
+		populate_mtt(xlt, idx, nentries, mr, flags);
+	}
+}
+
 static void dma_fence_odp_mr(struct mlx5_ib_mr *mr)
 {
 	struct ib_umem_odp *odp = to_ib_umem_odp(mr->umem);
@@ -342,7 +380,7 @@ void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
 	memset(caps, 0, sizeof(*caps));
 
 	if (!MLX5_CAP_GEN(dev->mdev, pg) ||
-	    !mlx5_ib_can_use_umr(dev, true))
+	    !mlx5_ib_can_use_umr(dev, true, 0))
 		return;
 
 	caps->general_caps = IB_ODP_SUPPORT;
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index ae7cbd9c9bca..a4f8e7030787 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -1918,7 +1918,7 @@ static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
 {
 	enum ib_qp_type qpt = init_attr->qp_type;
 	int scqe_sz;
-	bool allow_scat_cqe = 0;
+	bool allow_scat_cqe = false;
 
 	if (qpt == IB_QPT_UC || qpt == IB_QPT_UD)
 		return;
@@ -4870,7 +4870,7 @@ static int set_reg_wr(struct mlx5_ib_qp *qp,
 	bool atomic = wr->access & IB_ACCESS_REMOTE_ATOMIC;
 	u8 flags = 0;
 
-	if (!mlx5_ib_can_use_umr(dev, atomic)) {
+	if (!mlx5_ib_can_use_umr(dev, atomic, wr->access)) {
 		mlx5_ib_warn(to_mdev(qp->ibqp.device),
 			     "Fast update of %s for MR is disabled\n",
 			     (MLX5_CAP_GEN(dev->mdev,