[v1] VFIO and IOMMU prerequisite stuff for IOMMU nesting support

[PATCH v1 0/6] VFIO and IOMMU prerequisite stuff for IOMMU nesting support

Zhenzhong Duan posted 6 patches 5 months, 3 weeks ago

Diff against v2 v3
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git fetch https://github.com/patchew-project/qemu tags/patchew/20250528060409.3710008-1-zhenzhong.duan@intel.com

Maintainers: Yi Liu <yi.l.liu@intel.com>, Eric Auger <eric.auger@redhat.com>, Zhenzhong Duan <zhenzhong.duan@intel.com>, "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, "Clément Mathieu--Drif" <clement.mathieu--drif@eviden.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>

There is a newer version of this series

hw/i386/intel_iommu_internal.h     |  1 +
include/system/host_iommu_device.h | 18 ++++++
include/system/iommufd.h           | 54 +++++++++++++++++
backends/iommufd.c                 | 94 +++++++++++++++++++++++++++++-
hw/vfio/iommufd.c                  | 36 ++++++++++--
backends/trace-events              |  1 +
6 files changed, 197 insertions(+), 7 deletions(-)

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[PATCH v1 0/6] VFIO and IOMMU prerequisite stuff for IOMMU nesting support

Posted by Zhenzhong Duan 5 months, 3 weeks ago

Hi,

The first 6 patches of [1] are all VFIO or IOMMUFD related additions.
Split them out per Cédric and seek for quick acceptance.

I didn't copy changelog from [1] as it's a mix of the whole nesting series.
Compared to rfcv3 in [1], changed to save raw data in VendorCaps, so we can
keep all vendor structure decoding inside the backend and VFIO wouldn't need
to care about types nor what's inside the data.


Test done:
- VFIO devices hotplug/unplug
- build test on Windows

[1] https://lists.gnu.org/archive/html/qemu-devel/2025-05/msg05002.html

Thanks
Zhenzhong

Zhenzhong Duan (6):
  backends/iommufd: Add a helper to invalidate user-managed HWPT
  vfio/iommufd: Add properties and handlers to
    TYPE_HOST_IOMMU_DEVICE_IOMMUFD
  vfio/iommufd: Initialize iommufd specific members in
    HostIOMMUDeviceIOMMUFD
  vfio/iommufd: Implement [at|de]tach_hwpt handlers
  vfio/iommufd: Save vendor specific device info
  iommufd: Implement query of host VTD IOMMU's capability

 hw/i386/intel_iommu_internal.h     |  1 +
 include/system/host_iommu_device.h | 18 ++++++
 include/system/iommufd.h           | 54 +++++++++++++++++
 backends/iommufd.c                 | 94 +++++++++++++++++++++++++++++-
 hw/vfio/iommufd.c                  | 36 ++++++++++--
 backends/trace-events              |  1 +
 6 files changed, 197 insertions(+), 7 deletions(-)

-- 
2.34.1