On 03/07/2025 15:31, Ciara Loftus wrote: > The SSE rx and tx paths will be removed from the i40e, iavf and ice > drivers in the 25.11 release. Each of these drivers have faster vector > paths (AVX2 and AVX-512) which have feature parity with the soon to be > removed SSE paths. In environments where AVX2 or AVX-512 are not > supported, the scalar path will still be used, which also has feature > parity. > > Signed-off-by: Ciara Loftus <ciara.lof...@intel.com> > --- > doc/guides/rel_notes/deprecation.rst | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/doc/guides/rel_notes/deprecation.rst > b/doc/guides/rel_notes/deprecation.rst > index e2d4125308..0d020c9c1f 100644 > --- a/doc/guides/rel_notes/deprecation.rst > +++ b/doc/guides/rel_notes/deprecation.rst > @@ -80,6 +80,13 @@ Deprecation Notices > and the header struct ``rte_vxlan_gpe_hdr`` with the macro > ``RTE_ETHER_VXLAN_GPE_HLEN`` > will be removed in DPDK 25.11. > > +* net/intel: drivers that have an SSE vector path alongside other vector > paths, > + namely i40e, iavf and ice, will have their SSE vector paths removed in > DPDK 25.11. > + Modern x86 systems all support AVX2, if not AVX-512, so the SSE path is no > longer > + widely used. This change will not result in any feature loss, as the > fallback > + scalar paths which have feature parity with SSE will be used in the cases > where > + the SSE paths would have been used. > + > * ethdev: The flow API matching pattern structures, ``struct > rte_flow_item_*``, > should start with relevant protocol header structure from lib/net/. > The individual protocol header fields and the protocol header struct
I'm not aware of anyone using hardware that old and relying on SSE, but it seems a bit short notice for a patch to remove hardware support. Would it hurt much to give it a longer deprecation so anyone who needs to prepare by upgrade, or taking 25.11 with support etc. can do that ?
