On Mon, Jul 27, 2015 at 1:33 PM, Denys Vlasenko <[email protected]> wrote: > "sysenter_fix_flags" detour does not need to be convoluted anymore, > straigten it up. However, we still use this: > > jnz 2f > jmp sysenter_jumps_here > 2: ... > > instead of this: > > jz sysenter_jumps_here > ... > > because "cold" conditional forward branch is predicted not taken > by most CPUs - exactly what we want. Latter version would get it wrong. > > Reinstate "why we use SYSRETL instead of SYSEXIT" comment. >
Acked-by: Andy Lutomirski <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
