>-----Original Message----- >From: Cédric Le Goater <c...@redhat.com> >Subject: Re: [PATCH v3 04/19] vfio/iommufd: Introduce >HostIOMMUDeviceIOMMUFDVFIO device > >On 4/29/24 08:50, Zhenzhong Duan wrote: >> HostIOMMUDeviceIOMMUFDVFIO represents a host IOMMU device under >VFIO >> iommufd backend. It will be created during VFIO device attaching and >> passed to vIOMMU. >> >> It includes a link to VFIODevice so that we can do VFIO device >> specific operations, i.e., [at/de]taching hwpt, etc. >> >> Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com> >> --- >> include/hw/vfio/vfio-common.h | 13 +++++++++++++ >> hw/vfio/iommufd.c | 6 +++++- >> 2 files changed, 18 insertions(+), 1 deletion(-) >> >> diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio- >common.h >> index aa3abe0a18..0943add3bc 100644 >> --- a/include/hw/vfio/vfio-common.h >> +++ b/include/hw/vfio/vfio-common.h >> @@ -32,6 +32,7 @@ >> #include "sysemu/sysemu.h" >> #include "hw/vfio/vfio-container-base.h" >> #include "sysemu/host_iommu_device.h" >> +#include "sysemu/iommufd.h" >> >> #define VFIO_MSG_PREFIX "vfio %s: " >> >> @@ -159,6 +160,18 @@ struct HostIOMMUDeviceLegacyVFIO { >> VFIODevice *vdev; >> }; >> >> +#define TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO \ >> + TYPE_HOST_IOMMU_DEVICE_IOMMUFD "-vfio" >> +OBJECT_DECLARE_SIMPLE_TYPE(HostIOMMUDeviceIOMMUFDVFIO, >> + HOST_IOMMU_DEVICE_IOMMUFD_VFIO) >> + >> +/* Abstraction of host IOMMU device with VFIO IOMMUFD backend */ >> +struct HostIOMMUDeviceIOMMUFDVFIO { >> + HostIOMMUDeviceIOMMUFD parent; >> + >> + VFIODevice *vdev; > >Seems useless today.
Yes, useless before nesting series, will add in nesting series. Thanks Zhenzhong > >Thanks, > >C. > > > >> +}; >> + >> typedef struct VFIODMABuf { >> QemuDmaBuf buf; >> uint32_t pos_x, pos_y, pos_updates; >> diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c >> index 8827ffe636..997f4ac43e 100644 >> --- a/hw/vfio/iommufd.c >> +++ b/hw/vfio/iommufd.c >> @@ -639,7 +639,11 @@ static const TypeInfo types[] = { >> .name = TYPE_VFIO_IOMMU_IOMMUFD, >> .parent = TYPE_VFIO_IOMMU, >> .class_init = vfio_iommu_iommufd_class_init, >> - }, >> + }, { >> + .name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO, >> + .parent = TYPE_HOST_IOMMU_DEVICE_IOMMUFD, >> + .instance_size = sizeof(HostIOMMUDeviceIOMMUFDVFIO), >> + } >> }; >> >> DEFINE_TYPES(types)