Re: [v3 0/5] plumb kvm/vfio to allow getting kvm from vfio_group

[Jike Song <jike.song@intel.com>]

On 10/31/2016 02:35 PM, Jike Song wrote:
> So far KVM and VFIO are mostly transparent to each other.
> However, there are users who would rely on them both. For
> example, KVMGT relies on VFIO to mediate device operations,
> and it also relies on KVM for features such as guest page
> tracking. To do that, it needs to know which KVM instance
> a vfio_group is attached to.
> 
> There is already a kvm_vfio device serving for similar purpose,
> this patchset extend it to allow external usrs like KVMGT to
> get KVM instance from the vfio_group.
> 
> 
> I picked one of Kirti's patchset from:
> 
> 	https://lkml.org/lkml/2016/10/26/1119
> 
> for the function to get the vfio_group from a given device.
> 
> 
> Changes v3:
> 	- don't touch kvm_put_kvm, vfio won't need it
> 	- fix a race condition
> Changes v2:
> 	- As Paolo suggested, drop the type and get/put ops from
> 	  vfio, assuming that the data will always be kvm.
> 
> Jike Song (4):
>   vfio: export functions to get vfio_group from device and put it
>   KVM: move kvm_get_kvm to kvm_host.h
>   vfio: implement APIs to set/put kvm to/from vfio group
>   KVM: set/clear kvm to/from vfio group during add/delete
> 
> Kirti Wankhede (1):
>   vfio: Rearrange functions to get vfio_group from dev
> 
>  drivers/vfio/vfio.c      | 57 +++++++++++++++++++++++++++++++++++++++++-------
>  include/linux/kvm_host.h |  5 ++++-
>  include/linux/vfio.h     |  7 ++++++
>  virt/kvm/kvm_main.c      |  6 -----
>  virt/kvm/vfio.c          | 33 ++++++++++++++++++++++++++++
>  5 files changed, 93 insertions(+), 15 deletions(-)

Hi Alex,

Are you okay with changes in this series? Since the patches for vfio and
kvm patches are interleaved and Paolo has acked the kvm ones, I guess
you will pick up them? :-)

--
Thanks,
Jike