On Tue, Apr 22, 2014 at 6:17 PM, H. Peter Anvin <h...@linux.intel.com> wrote: > Another spin of the prototype. This one avoids the espfix for anything > but #GP, and avoids save/restore/saving registers... one can wonder, > though, how much that actually matters in practice. > > It still does redundant SWAPGS on the slow path. I'm not sure I > personally care enough to optimize that, as it means some fairly > significant restructuring of some of the code paths. Some of that > restructuring might actually be beneficial, but still... >
What's the to_dmesg thing for? It looks sane, although I haven't checked the detailed register manipulation. Users of big systems may complain when every single CPU lines up for that mutex. Maybe no one cares. --Andy -- 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/
