Hi, Based on Joao's suggestion, the iommufd nesting prerequisite series [1] is further splitted to host IOMMU device abstract part and vIOMMU check/sync part. This series implements the 1st part.
This split also faciliates the dirty tracking series [2] and virtio-iommu series [3] to depend on 1st part. PATCH1-3: Introduce HostIOMMUDevice and two sub class PATCH4: Define HostIOMMUDevice handle in VFIODevice PATCH5-8: Introdcue host_iommu_device_create callback to allocate and intialize HostIOMMUDevice PATCH9-10: Introdcue set/unset_iommu_device to pass HostIOMMUDevice to vIOMMU PATCH11: a helper to get host IOMMU info Because it's becoming clear on community's suggestion, I'd like to remove rfc tag from this version. Qemu code can be found at: https://github.com/yiliu1765/qemu/tree/zhenzhong/iommufd_nesting_preq_part1_v1 [1] https://lore.kernel.org/qemu-devel/20240201072818.327930-1-zhenzhong.d...@intel.com/ [2] https://lore.kernel.org/qemu-devel/20240212135643.5858-1-joao.m.mart...@oracle.com/ [3] https://lore.kernel.org/qemu-devel/20240117080414.316890-1-eric.au...@redhat.com/ Thanks Zhenzhong Changelog: v1: - use HostIOMMUDevice handle instead of union in VFIODevice (Eric) - change host_iommu_device_init to host_iommu_device_create - allocate HostIOMMUDevice in host_iommu_device_create callback and set the VFIODevice base_hdev handle (Eric) - refine pci_device_set/unset_iommu_device doc (Eric) - use HostIOMMUDevice handle instead of union in VTDHostIOMMUDevice (Eric) rfcv2: - introduce common abstract HostIOMMUDevice and sub struct for different BEs (Eric, Cédric) - remove iommufd_device.[ch] (Cédric) - remove duplicate iommufd/devid define from VFIODevice (Eric) - drop the p in aliased_pbus and aliased_pdevfn (Eric) - assert devfn and iommu_bus in pci_device_get_iommu_bus_devfn (Cédric, Eric) - use errp in iommufd_device_get_info (Eric) - split and simplify cap/ecap check/sync code in intel_iommu.c (Cédric) - move VTDHostIOMMUDevice declaration to intel_iommu_internal.h (Cédric) - make '(vtd->cap_reg >> 16) & 0x3fULL' a MACRO and add missed '+1' (Cédric) - block migration if vIOMMU cap/ecap updated based on host IOMMU cap/ecap - add R-B Yi Liu (1): hw/pci: Introduce pci_device_set/unset_iommu_device() Zhenzhong Duan (10): Introduce a common abstract struct HostIOMMUDevice backends/iommufd: Introduce IOMMUFDDevice vfio: Introduce IOMMULegacyDevice vfio: Add HostIOMMUDevice handle into VFIODevice vfio: Introduce host_iommu_device_create callback vfio/container: Implement host_iommu_device_create callback in legacy mode vfio/iommufd: Implement host_iommu_device_create callback in iommufd mode vfio/pci: Allocate and initialize HostIOMMUDevice after attachment vfio: Pass HostIOMMUDevice to vIOMMU backends/iommufd: Introduce helper function iommufd_device_get_info() include/hw/pci/pci.h | 38 +++++++++++++++- include/hw/vfio/vfio-common.h | 8 ++++ include/hw/vfio/vfio-container-base.h | 1 + include/sysemu/host_iommu_device.h | 22 ++++++++++ include/sysemu/iommufd.h | 19 ++++++++ backends/iommufd.c | 32 +++++++++++++- hw/pci/pci.c | 62 +++++++++++++++++++++++++-- hw/vfio/common.c | 8 ++++ hw/vfio/container.c | 9 ++++ hw/vfio/iommufd.c | 10 +++++ hw/vfio/pci.c | 24 ++++++++--- 11 files changed, 223 insertions(+), 10 deletions(-) create mode 100644 include/sysemu/host_iommu_device.h -- 2.34.1
