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.
-hpa
