On Wed, 21 Mar 2012, Paolo Bonzini wrote: > Il 21/03/2012 17:54, Stefano Stabellini ha scritto: > >> > > >> > No, you need to set UF in case the code observes it without actually > >> > enabling interrupt delivery on the ISA bus. > > > > Well, if it is just about updating UF, can we do it only when the user > > reads REG_C? > > Perhaps, but for AF it is much harder. Note that if the guest does not > care, this will run just once.
Right, probably not worth the effort.