Linus Torvalds writes: > We should just do this natively. There's been several tests over the years > saying that it's much more efficient to do sti/cli as a simple store, and > handling the "oops, we got an interrupt while interrupts were disabled" as > a special case. > > I have this dim memory that ARM has done it that way for a long time > because it's so expensive to do a "real" cli/sti. > > And I think -rt does it for other reasons. It's just more flexible.
64-bit powerpc does this now as well. Paul. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linux-foundation.org/mailman/listinfo/virtualization
