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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR08MB5162 Subject: Re: [dpdk-dev] [PATCH] node: fix arm64 build issue for older gcc X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" > -----Original Message----- > From: dev On Behalf Of Nithin Dabilpuram > Sent: Wednesday, May 13, 2020 1:48 PM > To: kirankumark@marvell.com; jerinj@marvell.com; > david.marchand@redhat.com; Nithin Dabilpuram > ; Pavan Nikhilesh > Cc: dev@dpdk.org > Subject: [dpdk-dev] [PATCH] node: fix arm64 build issue for older gcc >=20 > Older GCC(~4) complains about uninitialized 'dip' > var though all the lanes of the vec register are set. Better to add compiler output here. Otherwise looks good to me. Reviewed-by: Ruifeng Wang > Hence this patch explicitly initializes vec register to fix the issue. >=20 > Fixes: 16df6a2c6671 ("node: add IPv4 lookup for arm64") >=20 > Signed-off-by: Nithin Dabilpuram > --- > lib/librte_node/ip4_lookup_neon.h | 1 + > 1 file changed, 1 insertion(+) >=20 > diff --git a/lib/librte_node/ip4_lookup_neon.h > b/lib/librte_node/ip4_lookup_neon.h > index bb3150f..dd21cb2 100644 > --- a/lib/librte_node/ip4_lookup_neon.h > +++ b/lib/librte_node/ip4_lookup_neon.h > @@ -45,6 +45,7 @@ ip4_lookup_node_process(struct rte_graph *graph, > struct rte_node *node, > rte_prefetch0(rte_pktmbuf_mtod_offset(pkts[i], void *, > sizeof(struct > rte_ether_hdr))); >=20 > + dip =3D vdupq_n_s32(0); > /* Get stream for the speculated next node */ > to_next =3D rte_node_next_stream_get(graph, node, next_index, > nb_objs); > while (n_left_from >=3D 4) { > -- > 2.8.4