On Tue, 2013-08-06 at 09:19 -0700, H. Peter Anvin wrote: > On 08/06/2013 09:15 AM, Steven Rostedt wrote: > > On Mon, 2013-08-05 at 14:43 -0700, H. Peter Anvin wrote: > > > >> For unconditional jmp that should be pretty safe barring any fundamental > >> changes to the instruction set, in which case we can enable it as > >> needed, but for extra robustness it probably should skip prefix bytes. > > > > Would the assembler add prefix bytes to: > > > > jmp 1f > > > > No, but if we ever end up doing MPX in the kernel, for example, we would > have to put an MPX prefix on the jmp.
Well then we just have to update the rest of the jump label code :-) -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
