[PATCH 0/6] virtio: Use bounce buffers when VIRTIO_F_IOMMU_PLATFORM set

[Ying-Chun Liu (PaulLiu)]

These patches will use bounce buffers when VIRTIO_F_IOMMU_PLATFORM feature
is in a virtio device.

This feature can be tested with qemu with -device virtio-iommu-pci.
So that when a -device virtio-blk-pci with iommu_platform=true, it will
uses the bounce buffer instead.

Will Deacon (6):
  virtio: Expose VIRTIO_F_IOMMU_PLATFORM in device features
  virtio: pci: Tear down VQs in virtio_pci_reset()
  virtio: Allocate virtqueue in page-size units
  virtio: Add helper functions to attach/detach vring descriptors
  virtio: Allocate bounce buffers for devices with
    VIRTIO_F_IOMMU_PLATFORM
  virtio: Use bounce buffers when VIRTIO_F_IOMMU_PLATFORM is set

 drivers/virtio/virtio-uclass.c     |   2 +-
 drivers/virtio/virtio_pci_modern.c |  38 +++++------
 drivers/virtio/virtio_ring.c       | 101 ++++++++++++++++++++++++++---
 include/virtio_ring.h              |  21 +++---
 4 files changed, 125 insertions(+), 37 deletions(-)

-- 
2.39.2