On 04/15/2018 11:22 PM, Tony Krowiak wrote: > The VFIO AP device model exploits interpretive execution of AP > instructions (APIE) to provide guests passthrough access to AP > devices. This patch introduces a new interface to enable and > disable APIE. > > Signed-off-by: Tony Krowiak <akrowiak@xxxxxxxxxxxxxxxxxx> LGTM, but should be squashed into #4. (Like this you have a kernel that supports the cpu model feature 'ap' but does not do 'interpretation is default'.)