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

[Michael S. Tsirkin]

On Tue, Jan 11, 2022 at 10:02:12AM +0100, Eric Auger wrote:
> 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

They are in fact in my tree and set to go into 5.16.
They've been in linux-next for a whole cycle now.
But if you feel I'm rushing things, pls let me know.
Also, pls let me know whether my tree actually works well for you!

> >
> > 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(-)
> >