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

Message ID 20230329142500.682922-1-paul.liu@linaro.org
Headers show
Series virtio: Use bounce buffers when VIRTIO_F_IOMMU_PLATFORM set | expand

Message

Paul Liu March 29, 2023, 2:24 p.m. UTC 
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(-)

Comments

Tom Rini April 25, 2023, 6:31 p.m. UTC | #1 
On Wed, 29 Mar 2023 22:24:54 +0800, Ying-Chun Liu (PaulLiu) wrote:

> 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.
> 
> [...]

Applied to u-boot/master, thanks!