Re: [PATCH net-next v1 1/6] lan743x: boost performance on cpu archs w/o dma cache snooping

[Sven Van Asbroeck]

Hi Andrew, thank you so much for looking at this patch !

On Fri, Jan 29, 2021 at 3:36 PM Andrew Lunn <andrew@xxxxxxx> wrote:
>
> So this patch appears to contain two different changes
> 1) You only allocate a receive buffer as big as the MTU plus overheads
> 2) You change the cache operations to operate on the received length.
>
> The first change should be completely safe, and i guess, is giving
> most of the benefits. The second one is where interesting things might
> happen. So please split this patch into two.  If it does break, we can
> git bisect, and probably end up on the second patch.
>

Yes, I tested this extensively on arm7, but you're right, it might behave
differently on other platforms. I will split into two, as you suggested.