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

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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

Do not understand. vfio does not use it indeed, however, the
user of udata, i.e, KVMGT, should put kvm after vfio_group_get_kvm().
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