Re: [PATCH net-next] net: Implement fast csum_partial for x86_64

On 05.01.2016 00:34, Tom Herbert wrote:

On Mon, Jan 4, 2016 at 2:36 PM, Eric Dumazet [off-list ref] wrote:

quoted

On Sun, 2016-01-03 at 15:22 -0800, Tom Herbert wrote:
\...

quoted

+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?

Based on my knowledge (based on arch/x86/include/asm/unaligned.h) the 
x86 architecture (and this code is specific for x86) can handle 
unaligned access on its own.

Bye,
Hannes