On Mon, 2016-01-04 at 15:34 -0800, Tom Herbert wrote:
> On Mon, Jan 4, 2016 at 2:36 PM, Eric Dumazet <eric.duma...@gmail.com> wrote:
> > On Sun, 2016-01-03 at 15:22 -0800, Tom Herbert wrote:
> > \...
> >> +402: /* Length 2, align is 1, 3, or 5 */
> >> +     movb    (%rdi), %al
> >> +     movb    1(%rdi), %ah
> >
> > Looks like a movw (%rdi),%ax
> >
> Wouldn't that be an unaligned access?

x86 does not care. (This is why we have
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)

I bet it is faster using a single instruction.



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