On 1/19/24 08:31, Duan, Zhenzhong wrote:
-----Original Message-----
From: Eric Auger <eric.au...@redhat.com>
Subject: Re: [PATCH rfcv1 1/6] backends/iommufd_device: introduce
IOMMUFDDevice
On 1/15/24 11:13, Zhenzhong Duan wrote:
IOMMUFDDevice represents a device in iommufd and can be used as
a communication interface between devices (i.e., VFIO, VDPA) and
vIOMMU.
Currently it includes iommufd handler and device id information
which could be used by vIOMMU to get hw IOMMU information.
In future nested translation support, vIOMMU is going to have
more iommufd related operations like allocate hwpt for a device,
attach/detach hwpt, etc. So IOMMUFDDevice will be further expanded.
IOMMUFDDevice is willingly not a QOM object because we don't want
it to be visible from the user interface.
Introduce a helper iommufd_device_init to initialize IOMMUFDDevice.
Originally-by: Yi Liu <yi.l....@intel.com>
Signed-off-by: Yi Sun <yi.y....@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
---
MAINTAINERS | 4 +--
include/sysemu/iommufd_device.h | 31 ++++++++++++++++++++
backends/iommufd_device.c | 50
+++++++++++++++++++++++++++++++++
Maybe it is still time to move the iommufd files in a sepate dir, under
hw at the same level as vfio.
Thoughts?
Any reason for the movement? Hw dir contains entries to emulate different
Devices. Iommufd is not a real device. It's more a backend.
I would include the new services in the existing iommufd .[ch] files.
No need for a new file since the changes are all related to the IOMMUFD
device usage.
Thanks,
C.
