On 25/05/20 17:17, Kirill A. Shutemov wrote: >> Personally, I would've just added 'struct kvm' pointer to 'struct >> kvm_memory_slot' to be able to extract 'mem_protected' info when >> needed. This will make the patch much smaller. > Okay, can do. > > Other thing I tried is to have per-slot flag to indicate that it's > protected. But Sean pointed that it's all-or-nothing feature and having > the flag in the slot would be misleading. >
Perhaps it would be misleading, but it's an optimization. Saving a pointer dereference can be worth it, also because there are some places where we just pass around a memslot and we don't have the struct kvm*. Also, it's an all-or-nothing feature _now_. It doesn't have to remain that way. Paolo
