Re: [PATCH 0/3] virtio-iommu: Support VIRTIO_IOMMU_F_BYPASS_CONFIG

[Eric Auger]

Hi Jean, Michael,

On 9/30/21 8:50 PM, Jean-Philippe Brucker wrote:
> Replace the VIRTIO_IOMMU_F_BYPASS feature with
> VIRTIO_IOMMU_F_BYPASS_CONFIG, which enables a config space bit to switch
> global bypass on and off.
>
> Add a boot-bypass option, which defaults to 'on' to be in line with
> other vIOMMUs and to allow running firmware/bootloader that are unaware
> of the IOMMU.
>
> See the spec change for more rationale
> https://lists.oasis-open.org/archives/virtio-dev/202109/msg00137.html

I guess the kernel bits should be merged in 5.17?

Thanks

Eric
>
> Jean-Philippe Brucker (3):
>   NOMERGE: virtio-iommu: Add definitions for
>     VIRTIO_IOMMU_F_BYPASS_CONFIG
>   virtio-iommu: Default to bypass during boot
>   virtio-iommu: Support bypass domain
>
>  include/hw/virtio/virtio-iommu.h              |  1 +
>  include/standard-headers/linux/virtio_iommu.h | 10 +++-
>  hw/virtio/virtio-iommu.c                      | 60 ++++++++++++++++---
>  hw/virtio/trace-events                        |  4 +-
>  4 files changed, 64 insertions(+), 11 deletions(-)
>