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

Pull virtio updates from Michael Tsirkin:

 - vdpa generic device type support

 - more virtio hardening for broken devices (but on the same theme,
   revert some virtio hotplug hardening patches - they were misusing
   some interrupt flags and had to be reverted)

 - RSS support in virtio-net

 - max device MTU support in mlx5 vdpa

 - akcipher support in virtio-crypto

 - shared IRQ support in ifcvf vdpa

 - a minor performance improvement in vhost

 - enable virtio mem for ARM64

 - beginnings of advance dma support

 - cleanups, fixes all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (33 commits)
  vdpa/mlx5: Avoid processing works if workqueue was destroyed
  vhost: handle error while adding split ranges to iotlb
  vdpa: support exposing the count of vqs to userspace
  vdpa: change the type of nvqs to u32
  vdpa: support exposing the config size to userspace
  vdpa/mlx5: re-create forwarding rules after mac modified
  virtio: pci: check bar values read from virtio config space
  Revert "virtio_pci: harden MSI-X interrupts"
  Revert "virtio-pci: harden INTX interrupts"
  drivers/net/virtio_net: Added RSS hash report control.
  drivers/net/virtio_net: Added RSS hash report.
  drivers/net/virtio_net: Added basic RSS support.
  drivers/net/virtio_net: Fixed padded vheader to use v1 with hash.
  virtio: use virtio_device_ready() in virtio_device_restore()
  tools/virtio: compile with -pthread
  tools/virtio: fix after premapped buf support
  virtio_ring: remove flags check for unmap packed indirect desc
  virtio_ring: remove flags check for unmap split indirect desc
  virtio_ring: rename vring_unmap_state_packed() to vring_unmap_extra_packed()
  net/mlx5: Add support for configuring max device MTU
  ...

1 files changed, 18 insertions, 35 deletions

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 962f1477b1fa..cfb028ca238e 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -379,19 +379,11 @@ static void vring_unmap_one_split_indirect(const struct vring_virtqueue *vq,
 
 	flags = virtio16_to_cpu(vq->vq.vdev, desc->flags);
 
-	if (flags & VRING_DESC_F_INDIRECT) {
-		dma_unmap_single(vring_dma_dev(vq),
-				 virtio64_to_cpu(vq->vq.vdev, desc->addr),
-				 virtio32_to_cpu(vq->vq.vdev, desc->len),
-				 (flags & VRING_DESC_F_WRITE) ?
-				 DMA_FROM_DEVICE : DMA_TO_DEVICE);
-	} else {
-		dma_unmap_page(vring_dma_dev(vq),
-			       virtio64_to_cpu(vq->vq.vdev, desc->addr),
-			       virtio32_to_cpu(vq->vq.vdev, desc->len),
-			       (flags & VRING_DESC_F_WRITE) ?
-			       DMA_FROM_DEVICE : DMA_TO_DEVICE);
-	}
+	dma_unmap_page(vring_dma_dev(vq),
+		       virtio64_to_cpu(vq->vq.vdev, desc->addr),
+		       virtio32_to_cpu(vq->vq.vdev, desc->len),
+		       (flags & VRING_DESC_F_WRITE) ?
+		       DMA_FROM_DEVICE : DMA_TO_DEVICE);
 }
 
 static unsigned int vring_unmap_one_split(const struct vring_virtqueue *vq,
@@ -984,24 +976,24 @@ static struct virtqueue *vring_create_virtqueue_split(
  * Packed ring specific functions - *_packed().
  */
 
-static void vring_unmap_state_packed(const struct vring_virtqueue *vq,
-				     struct vring_desc_extra *state)
+static void vring_unmap_extra_packed(const struct vring_virtqueue *vq,
+				     struct vring_desc_extra *extra)
 {
 	u16 flags;
 
 	if (!vq->use_dma_api)
 		return;
 
-	flags = state->flags;
+	flags = extra->flags;
 
 	if (flags & VRING_DESC_F_INDIRECT) {
 		dma_unmap_single(vring_dma_dev(vq),
-				 state->addr, state->len,
+				 extra->addr, extra->len,
 				 (flags & VRING_DESC_F_WRITE) ?
 				 DMA_FROM_DEVICE : DMA_TO_DEVICE);
 	} else {
 		dma_unmap_page(vring_dma_dev(vq),
-			       state->addr, state->len,
+			       extra->addr, extra->len,
 			       (flags & VRING_DESC_F_WRITE) ?
 			       DMA_FROM_DEVICE : DMA_TO_DEVICE);
 	}
@@ -1017,19 +1009,11 @@ static void vring_unmap_desc_packed(const struct vring_virtqueue *vq,
 
 	flags = le16_to_cpu(desc->flags);
 
-	if (flags & VRING_DESC_F_INDIRECT) {
-		dma_unmap_single(vring_dma_dev(vq),
-				 le64_to_cpu(desc->addr),
-				 le32_to_cpu(desc->len),
-				 (flags & VRING_DESC_F_WRITE) ?
-				 DMA_FROM_DEVICE : DMA_TO_DEVICE);
-	} else {
-		dma_unmap_page(vring_dma_dev(vq),
-			       le64_to_cpu(desc->addr),
-			       le32_to_cpu(desc->len),
-			       (flags & VRING_DESC_F_WRITE) ?
-			       DMA_FROM_DEVICE : DMA_TO_DEVICE);
-	}
+	dma_unmap_page(vring_dma_dev(vq),
+		       le64_to_cpu(desc->addr),
+		       le32_to_cpu(desc->len),
+		       (flags & VRING_DESC_F_WRITE) ?
+		       DMA_FROM_DEVICE : DMA_TO_DEVICE);
 }
 
 static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
@@ -1303,8 +1287,7 @@ unmap_release:
 	for (n = 0; n < total_sg; n++) {
 		if (i == err_idx)
 			break;
-		vring_unmap_state_packed(vq,
-					 &vq->packed.desc_extra[curr]);
+		vring_unmap_extra_packed(vq, &vq->packed.desc_extra[curr]);
 		curr = vq->packed.desc_extra[curr].next;
 		i++;
 		if (i >= vq->packed.vring.num)
@@ -1383,8 +1366,8 @@ static void detach_buf_packed(struct vring_virtqueue *vq,
 	if (unlikely(vq->use_dma_api)) {
 		curr = id;
 		for (i = 0; i < state->num; i++) {
-			vring_unmap_state_packed(vq,
-				&vq->packed.desc_extra[curr]);
+			vring_unmap_extra_packed(vq,
+						 &vq->packed.desc_extra[curr]);
 			curr = vq->packed.desc_extra[curr].next;
 		}
 	}