On Fri, 21 Nov 2025 17:02:17 +0000 Bruce Richardson <[email protected]> wrote:
> > As I have said before would rather that DPDK move away from having its > > own specialized memcpy. How is this compared to stock inline gcc? > > The main motivation is that the glibc/gcc team does more testing across > > multiple architectures and has a community with more expertise on CPU > > special cases. > > I would tend to agree. Even if we get rte_memcpy a few cycles faster, I > suspect many apps wouldn't notice the difference. However, I understand > that the virtio/vhost libraries gain from using rte_memcpy over standard > memcpy - or at least used to. Perhaps we can consider deprecating > rte_memcpy and just putting a vhost-specific memcpy in that library? It would be good to figure out why vhost is better with rte_memcpy, maybe there is some alignment assumption that is in one and not the other?
