On Wed, Nov 02 2022, Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
> Move the call to kvm_vfio_ops_exit() further up kvm_exit() to try and
> bring some amount of symmetry to the setup order in kvm_init(), and more
> importantly so that the arch hooks are invoked dead last by kvm_exit().
> This will allow arch code to move away from the arch hooks without any
> change in ordering between arch code and common code in kvm_exit().
>
> That kvm_vfio_ops_exit() is called last appears to be 100% arbitrary. It
> was bolted on after the fact by commit 571ee1b68598 ("kvm: vfio: fix
> unregister kvm_device_ops of vfio"). The nullified kvm_device_ops_table
> is also local to kvm_main.c and is used only when there are active VMs,
> so unless arch code is doing something truly bizarre, nullifying the
> table earlier in kvm_exit() is little more than a nop.
>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
> virt/kvm/kvm_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Looks safe to me.
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
