On 11/15/23 05:06, Duan, Zhenzhong wrote:
-----Original Message-----
From: Cédric Le Goater <c...@redhat.com>
Sent: Tuesday, November 14, 2023 9:29 PM
Subject: Re: [PATCH v6 01/21] backends/iommufd: Introduce the iommufd object
On 11/14/23 11:09, Zhenzhong Duan wrote:
From: Eric Auger <eric.au...@redhat.com>
Introduce an iommufd object which allows the interaction
with the host /dev/iommu device.
The /dev/iommu can have been already pre-opened outside of qemu,
in which case the fd can be passed directly along with the
iommufd object:
This allows the iommufd object to be shared accross several
subsystems (VFIO, VDPA, ...). For example, libvirt would open
the /dev/iommu once.
If no fd is passed along with the iommufd object, the /dev/iommu
is opened by the qemu code.
Suggested-by: Alex Williamson <alex.william...@redhat.com>
Signed-off-by: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Yi Liu <yi.l....@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
I simplified the object declaration in include/sysemu/iommufd.h and
formatted /dev/iommu in qemu-options.hx. No need to resend.
Good catch, thanks! Maybe further simplified with below? This is minor.
OBJECT_DECLARE_TYPE(IOMMUFDBackend, IOMMUFDBackendClass, IOMMUFD_BACKEND)
Indeed. Done.
Thanks,
C.
