Re: [PATCH RFC 03/15] KVM: Add build-time error check on kvm_run size

[Paolo Bonzini]

On 02/12/19 23:19, Sean Christopherson wrote:
>>> e.g. in a mostly hypothetical case where the allocation of vcpu->run
>>> were changed to something else.
>> And that's why I added BUILD_BUG_ON right beneath that allocation. :)

It's not exactly beneath it (it's out of the patch context at least).  I
think a comment is not strictly necessary, but a better commit message
is and, since you are at it, I would put the BUILD_BUG_ON *before* the
allocation.  That makes it more obvious that you are checking the
invariant before allocating.

Paolo