> From: Tian, Kevin <kevin.tian@xxxxxxxxx> > Sent: Wednesday, February 22, 2023 10:33 AM > > Paolo's mail address is wrong. Added the right one. Thanks. @Alex, do you want a new version or this one is ok? Regards, Yi Liu > > From: Liu, Yi L <yi.l.liu@xxxxxxxxx> > > Sent: Wednesday, February 22, 2023 10:23 AM > > > > as some vfio_device drivers require a kvm pointer to be set in their > > open_device and kvm pointer is set to VFIO in GROUP_ADD path. > > > > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> > > --- > > v2: > > - Adopt Alex's suggestion > > v1: https://lore.kernel.org/kvm/20230221034114.135386-1- > > yi.l.liu@xxxxxxxxx/ > > --- > > Documentation/virt/kvm/devices/vfio.rst | 7 +++++++ > > 1 file changed, 7 insertions(+) > > > > diff --git a/Documentation/virt/kvm/devices/vfio.rst > > b/Documentation/virt/kvm/devices/vfio.rst > > index 2d20dc561069..79b6811bb4f3 100644 > > --- a/Documentation/virt/kvm/devices/vfio.rst > > +++ b/Documentation/virt/kvm/devices/vfio.rst > > @@ -39,3 +39,10 @@ KVM_DEV_VFIO_GROUP attributes: > > - @groupfd is a file descriptor for a VFIO group; > > - @tablefd is a file descriptor for a TCE table allocated via > > KVM_CREATE_SPAPR_TCE. > > + > > +:: > > + > > +The GROUP_ADD operation above should be invoked prior to accessing > the > > +device file descriptor via VFIO_GROUP_GET_DEVICE_FD in order to > support > > +drivers which require a kvm pointer to be set in their .open_device() > > +callback. > > -- > > 2.34.1
