Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Several new features here:

   - Virtio find vqs API has been reworked (required to fix the
     scalability issue we have with adminq, which I hope to merge later
     in the cycle)

   - vDPA driver for Marvell OCTEON

   - virtio fs performance improvement

   - mlx5 migration speedups

  Fixes, cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (56 commits)
  virtio: rename virtio_find_vqs_info() to virtio_find_vqs()
  virtio: remove unused virtio_find_vqs() and virtio_find_vqs_ctx() helpers
  virtio: convert the rest virtio_find_vqs() users to virtio_find_vqs_info()
  virtio_balloon: convert to use virtio_find_vqs_info()
  virtiofs: convert to use virtio_find_vqs_info()
  scsi: virtio_scsi: convert to use virtio_find_vqs_info()
  virtio_net: convert to use virtio_find_vqs_info()
  virtio_crypto: convert to use virtio_find_vqs_info()
  virtio_console: convert to use virtio_find_vqs_info()
  virtio_blk: convert to use virtio_find_vqs_info()
  virtio: rename find_vqs_info() op to find_vqs()
  virtio: remove the original find_vqs() op
  virtio: call virtio_find_vqs_info() from virtio_find_single_vq() directly
  virtio: convert find_vqs() op implementations to find_vqs_info()
  virtio_pci: convert vp_*find_vqs() ops to find_vqs_info()
  virtio: introduce virtio_queue_info struct and find_vqs_info() config op
  virtio: make virtio_find_single_vq() call virtio_find_vqs()
  virtio: make virtio_find_vqs() call virtio_find_vqs_ctx()
  caif_virtio: use virtio_find_single_vq() for single virtqueue finding
  vdpa/mlx5: Don't enable non-active VQs in .set_vq_ready()
  ...

Author: torvalds

MAINTAINERS

@@ -10786,7 +10786,7 @@ F:	net/ieee802154/
 F:	net/mac802154/
 
 Intel VIRTIO DATA PATH ACCELERATOR
-M:	Zhu Lingshan <lingshan.zhu@intel.com>
+M:	Zhu Lingshan <lingshan.zhu@kernel.org>
 L:	[email protected]
 S:	Supported
 F:	drivers/vdpa/ifcvf/
@@ -13611,6 +13611,11 @@ S:	Supported
 F:	Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.yaml
 F:	drivers/mmc/host/sdhci-xenon*
 
+MARVELL OCTEON ENDPOINT VIRTIO DATA PATH ACCELERATOR
+R:	[email protected]
+R:	[email protected]
+F:	drivers/vdpa/octeon_ep/
+
 MATROX FRAMEBUFFER DRIVER
 L:	[email protected]
 S:	Orphan

arch/um/drivers/virt-pci.c

@@ -567,12 +567,14 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
 
 static int um_pci_init_vqs(struct um_pci_device *dev)
 {
+	struct virtqueue_info vqs_info[] = {
+		{ "cmd", um_pci_cmd_vq_cb },
+		{ "irq", um_pci_irq_vq_cb },
+	};
 	struct virtqueue *vqs[2];
-	static const char *const names[2] = { "cmd", "irq" };
-	vq_callback_t *cbs[2] = { um_pci_cmd_vq_cb, um_pci_irq_vq_cb };
 	int err, i;
 
-	err = virtio_find_vqs(dev->vdev, 2, vqs, cbs, names, NULL);
+	err = virtio_find_vqs(dev->vdev, 2, vqs, vqs_info, NULL);
 	if (err)
 		return err;
 

arch/um/drivers/virtio_uml.c

@@ -1014,8 +1014,8 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev,
 }
 
 static int vu_find_vqs(struct virtio_device *vdev, unsigned nvqs,
-		       struct virtqueue *vqs[], vq_callback_t *callbacks[],
-		       const char * const names[], const bool *ctx,
+		       struct virtqueue *vqs[],
+		       struct virtqueue_info vqs_info[],
 		       struct irq_affinity *desc)
 {
 	struct virtio_uml_device *vu_dev = to_virtio_uml_device(vdev);
@@ -1031,13 +1031,15 @@ static int vu_find_vqs(struct virtio_device *vdev, unsigned nvqs,
 		return rc;
 
 	for (i = 0; i < nvqs; ++i) {
-		if (!names[i]) {
+		struct virtqueue_info *vqi = &vqs_info[i];
+
+		if (!vqi->name) {
 			vqs[i] = NULL;
 			continue;
 		}
 
-		vqs[i] = vu_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
-				     ctx ? ctx[i] : false);
+		vqs[i] = vu_setup_vq(vdev, queue_idx++, vqi->callback,
+				     vqi->name, vqi->ctx);
 		if (IS_ERR(vqs[i])) {
 			rc = PTR_ERR(vqs[i]);
 			goto error_setup;

drivers/block/virtio_blk.c

@@ -964,8 +964,7 @@ static int init_vq(struct virtio_blk *vblk)
 {
 	int err;
 	unsigned short i;
-	vq_callback_t **callbacks;
-	const char **names;
+	struct virtqueue_info *vqs_info;
 	struct virtqueue **vqs;
 	unsigned short num_vqs;
 	unsigned short num_poll_vqs;
@@ -1002,28 +1001,26 @@ static int init_vq(struct virtio_blk *vblk)
 	if (!vblk->vqs)
 		return -ENOMEM;
 
-	names = kmalloc_array(num_vqs, sizeof(*names), GFP_KERNEL);
-	callbacks = kmalloc_array(num_vqs, sizeof(*callbacks), GFP_KERNEL);
+	vqs_info = kcalloc(num_vqs, sizeof(*vqs_info), GFP_KERNEL);
 	vqs = kmalloc_array(num_vqs, sizeof(*vqs), GFP_KERNEL);
-	if (!names || !callbacks || !vqs) {
+	if (!vqs_info || !vqs) {
 		err = -ENOMEM;
 		goto out;
 	}
 
 	for (i = 0; i < num_vqs - num_poll_vqs; i++) {
-		callbacks[i] = virtblk_done;
+		vqs_info[i].callback = virtblk_done;
 		snprintf(vblk->vqs[i].name, VQ_NAME_LEN, "req.%u", i);
-		names[i] = vblk->vqs[i].name;
+		vqs_info[i].name = vblk->vqs[i].name;
 	}
 
 	for (; i < num_vqs; i++) {
-		callbacks[i] = NULL;
 		snprintf(vblk->vqs[i].name, VQ_NAME_LEN, "req_poll.%u", i);
-		names[i] = vblk->vqs[i].name;
+		vqs_info[i].name = vblk->vqs[i].name;
 	}
 
 	/* Discover virtqueues and write information to configuration.  */
-	err = virtio_find_vqs(vdev, num_vqs, vqs, callbacks, names, &desc);
+	err = virtio_find_vqs(vdev, num_vqs, vqs, vqs_info, &desc);
 	if (err)
 		goto out;
 
@@ -1035,8 +1032,7 @@ static int init_vq(struct virtio_blk *vblk)
 
 out:
 	kfree(vqs);
-	kfree(callbacks);
-	kfree(names);
+	kfree(vqs_info);
 	if (err)
 		kfree(vblk->vqs);
 	return err;

drivers/bluetooth/virtio_bt.c

@@ -254,13 +254,9 @@ static void virtbt_rx_done(struct virtqueue *vq)
 
 static int virtbt_probe(struct virtio_device *vdev)
 {
-	vq_callback_t *callbacks[VIRTBT_NUM_VQS] = {
-		[VIRTBT_VQ_TX] = virtbt_tx_done,
-		[VIRTBT_VQ_RX] = virtbt_rx_done,
-	};
-	const char *names[VIRTBT_NUM_VQS] = {
-		[VIRTBT_VQ_TX] = "tx",
-		[VIRTBT_VQ_RX] = "rx",
+	struct virtqueue_info vqs_info[VIRTBT_NUM_VQS] = {
+		[VIRTBT_VQ_TX] = { "tx", virtbt_tx_done },
+		[VIRTBT_VQ_RX] = { "rx", virtbt_rx_done },
 	};
 	struct virtio_bluetooth *vbt;
 	struct hci_dev *hdev;
@@ -288,8 +284,7 @@ static int virtbt_probe(struct virtio_device *vdev)
 
 	INIT_WORK(&vbt->rx, virtbt_rx_work);
 
-	err = virtio_find_vqs(vdev, VIRTBT_NUM_VQS, vbt->vqs, callbacks,
-			      names, NULL);
+	err = virtio_find_vqs(vdev, VIRTBT_NUM_VQS, vbt->vqs, vqs_info, NULL);
 	if (err)
 		return err;
 

drivers/char/virtio_console.c

@@ -1804,8 +1804,7 @@ static void config_work_handler(struct work_struct *work)
 
 static int init_vqs(struct ports_device *portdev)
 {
-	vq_callback_t **io_callbacks;
-	char **io_names;
+	struct virtqueue_info *vqs_info;
 	struct virtqueue **vqs;
 	u32 i, j, nr_ports, nr_queues;
 	int err;
@@ -1814,15 +1813,12 @@ static int init_vqs(struct ports_device *portdev)
 	nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2;
 
 	vqs = kmalloc_array(nr_queues, sizeof(struct virtqueue *), GFP_KERNEL);
-	io_callbacks = kmalloc_array(nr_queues, sizeof(vq_callback_t *),
-				     GFP_KERNEL);
-	io_names = kmalloc_array(nr_queues, sizeof(char *), GFP_KERNEL);
+	vqs_info = kcalloc(nr_queues, sizeof(*vqs_info), GFP_KERNEL);
 	portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),
 					GFP_KERNEL);
 	portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),
 					 GFP_KERNEL);
-	if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs ||
-	    !portdev->out_vqs) {
+	if (!vqs || !vqs_info || !portdev->in_vqs || !portdev->out_vqs) {
 		err = -ENOMEM;
 		goto free;
 	}
@@ -1833,30 +1829,27 @@ static int init_vqs(struct ports_device *portdev)
 	 * 0 before others.
 	 */
 	j = 0;
-	io_callbacks[j] = in_intr;
-	io_callbacks[j + 1] = out_intr;
-	io_names[j] = "input";
-	io_names[j + 1] = "output";
+	vqs_info[j].callback = in_intr;
+	vqs_info[j + 1].callback = out_intr;
+	vqs_info[j].name = "input";
+	vqs_info[j + 1].name = "output";
 	j += 2;
 
 	if (use_multiport(portdev)) {
-		io_callbacks[j] = control_intr;
-		io_callbacks[j + 1] = NULL;
-		io_names[j] = "control-i";
-		io_names[j + 1] = "control-o";
+		vqs_info[j].callback = control_intr;
+		vqs_info[j].name = "control-i";
+		vqs_info[j + 1].name = "control-o";
 
 		for (i = 1; i < nr_ports; i++) {
 			j += 2;
-			io_callbacks[j] = in_intr;
-			io_callbacks[j + 1] = out_intr;
-			io_names[j] = "input";
-			io_names[j + 1] = "output";
+			vqs_info[j].callback = in_intr;
+			vqs_info[j + 1].callback = out_intr;
+			vqs_info[j].name = "input";
+			vqs_info[j + 1].name = "output";
 		}
 	}
 	/* Find the queues. */
-	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs,
-			      io_callbacks,
-			      (const char **)io_names, NULL);
+	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs, vqs_info, NULL);
 	if (err)
 		goto free;
 
@@ -1874,17 +1867,15 @@ static int init_vqs(struct ports_device *portdev)
 			portdev->out_vqs[i] = vqs[j + 1];
 		}
 	}
-	kfree(io_names);
-	kfree(io_callbacks);
+	kfree(vqs_info);
 	kfree(vqs);
 
 	return 0;
 
 free:
 	kfree(portdev->out_vqs);
 	kfree(portdev->in_vqs);
-	kfree(io_names);
-	kfree(io_callbacks);
+	kfree(vqs_info);
 	kfree(vqs);
 
 	return err;

drivers/crypto/virtio/virtio_crypto_core.c

@@ -96,11 +96,10 @@ static void virtcrypto_dataq_callback(struct virtqueue *vq)
 
 static int virtcrypto_find_vqs(struct virtio_crypto *vi)
 {
-	vq_callback_t **callbacks;
+	struct virtqueue_info *vqs_info;
 	struct virtqueue **vqs;
 	int ret = -ENOMEM;
 	int i, total_vqs;
-	const char **names;
 	struct device *dev = &vi->vdev->dev;
 
 	/*
@@ -114,26 +113,23 @@ static int virtcrypto_find_vqs(struct virtio_crypto *vi)
 	vqs = kcalloc(total_vqs, sizeof(*vqs), GFP_KERNEL);
 	if (!vqs)
 		goto err_vq;
-	callbacks = kcalloc(total_vqs, sizeof(*callbacks), GFP_KERNEL);
-	if (!callbacks)
-		goto err_callback;
-	names = kcalloc(total_vqs, sizeof(*names), GFP_KERNEL);
-	if (!names)
-		goto err_names;
+	vqs_info = kcalloc(total_vqs, sizeof(*vqs_info), GFP_KERNEL);
+	if (!vqs_info)
+		goto err_vqs_info;
 
 	/* Parameters for control virtqueue */
-	callbacks[total_vqs - 1] = virtcrypto_ctrlq_callback;
-	names[total_vqs - 1] = "controlq";
+	vqs_info[total_vqs - 1].callback = virtcrypto_ctrlq_callback;
+	vqs_info[total_vqs - 1].name = "controlq";
 
 	/* Allocate/initialize parameters for data virtqueues */
 	for (i = 0; i < vi->max_data_queues; i++) {
-		callbacks[i] = virtcrypto_dataq_callback;
+		vqs_info[i].callback = virtcrypto_dataq_callback;
 		snprintf(vi->data_vq[i].name, sizeof(vi->data_vq[i].name),
 				"dataq.%d", i);
-		names[i] = vi->data_vq[i].name;
+		vqs_info[i].name = vi->data_vq[i].name;
 	}
 
-	ret = virtio_find_vqs(vi->vdev, total_vqs, vqs, callbacks, names, NULL);
+	ret = virtio_find_vqs(vi->vdev, total_vqs, vqs, vqs_info, NULL);
 	if (ret)
 		goto err_find;
 
@@ -153,18 +149,15 @@ static int virtcrypto_find_vqs(struct virtio_crypto *vi)
 				(unsigned long)&vi->data_vq[i]);
 	}
 
-	kfree(names);
-	kfree(callbacks);
+	kfree(vqs_info);
 	kfree(vqs);
 
 	return 0;
 
 err_engine:
 err_find:
-	kfree(names);
-err_names:
-	kfree(callbacks);
-err_callback:
+	kfree(vqs_info);
+err_vqs_info:
 	kfree(vqs);
 err_vq:
 	return ret;

drivers/firmware/arm_scmi/virtio.c

@@ -354,11 +354,9 @@ static void scmi_vio_deferred_tx_worker(struct work_struct *work)
 	scmi_vio_channel_release(vioch);
 }
 
-static const char *const scmi_vio_vqueue_names[] = { "tx", "rx" };
-
-static vq_callback_t *scmi_vio_complete_callbacks[] = {
-	scmi_vio_complete_cb,
-	scmi_vio_complete_cb
+static struct virtqueue_info scmi_vio_vqs_info[] = {
+	{ "tx", scmi_vio_complete_cb },
+	{ "rx", scmi_vio_complete_cb },
 };
 
 static unsigned int virtio_get_max_msg(struct scmi_chan_info *base_cinfo)
@@ -831,8 +829,7 @@ static int scmi_vio_probe(struct virtio_device *vdev)
 	if (have_vq_rx)
 		channels[VIRTIO_SCMI_VQ_RX].is_rx = true;
 
-	ret = virtio_find_vqs(vdev, vq_cnt, vqs, scmi_vio_complete_callbacks,
-			      scmi_vio_vqueue_names, NULL);
+	ret = virtio_find_vqs(vdev, vq_cnt, vqs, scmi_vio_vqs_info, NULL);
 	if (ret) {
 		dev_err(dev, "Failed to get %d virtqueue(s)\n", vq_cnt);
 		return ret;

drivers/gpio/gpio-virtio.c

@@ -457,15 +457,15 @@ static void virtio_gpio_free_vqs(struct virtio_device *vdev)
 static int virtio_gpio_alloc_vqs(struct virtio_gpio *vgpio,
 				 struct virtio_device *vdev)
 {
-	const char * const names[] = { "requestq", "eventq" };
-	vq_callback_t *cbs[] = {
-		virtio_gpio_request_vq,
-		virtio_gpio_event_vq,
+	struct virtqueue_info vqs_info[] = {
+		{ "requestq", virtio_gpio_request_vq },
+		{ "eventq", virtio_gpio_event_vq },
 	};
 	struct virtqueue *vqs[2] = { NULL, NULL };
 	int ret;
 
-	ret = virtio_find_vqs(vdev, vgpio->irq_lines ? 2 : 1, vqs, cbs, names, NULL);
+	ret = virtio_find_vqs(vdev, vgpio->irq_lines ? 2 : 1, vqs,
+			      vqs_info, NULL);
 	if (ret) {
 		dev_err(&vdev->dev, "failed to find vqs: %d\n", ret);
 		return ret;

drivers/gpu/drm/virtio/virtgpu_kms.c

@@ -116,11 +116,10 @@ static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
 
 int virtio_gpu_init(struct virtio_device *vdev, struct drm_device *dev)
 {
-	static vq_callback_t *callbacks[] = {
-		virtio_gpu_ctrl_ack, virtio_gpu_cursor_ack
+	struct virtqueue_info vqs_info[] = {
+		{ "control", virtio_gpu_ctrl_ack },
+		{ "cursor", virtio_gpu_cursor_ack },
 	};
-	static const char * const names[] = { "control", "cursor" };
-
 	struct virtio_gpu_device *vgdev;
 	/* this will expand later */
 	struct virtqueue *vqs[2];
@@ -207,7 +206,7 @@ int virtio_gpu_init(struct virtio_device *vdev, struct drm_device *dev)
 	DRM_INFO("features: %ccontext_init\n",
 		 vgdev->has_context_init ? '+' : '-');
 
-	ret = virtio_find_vqs(vgdev->vdev, 2, vqs, callbacks, names, NULL);
+	ret = virtio_find_vqs(vgdev->vdev, 2, vqs, vqs_info, NULL);
 	if (ret) {
 		DRM_ERROR("failed to find virt queues\n");
 		goto err_vqs;