> Worth it on 32-bit. On AMD64, probably not. On Intel 64-bit, maybe, > but less important than in P4 days. Well most of Intel 64bit is P4 -- and Intel is still shipping millions more of them each quarter. > This could change character completely if used at the tail of a function > where you now have > > sti; 1: ret > > Which generates an interrupt holdoff on the ret, an unusual thing to do. Unusual yes, but I don't see how it should cause problems. Or do you have anything specific in mind? Worse is probably that on K8 this case might cause a pipeline stall if there isn't a prefix in front of the ret. -Andi _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
