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Miller" , Saeed Mahameed , Leon Romanovsky , Mark Bloch , Sabrina Dubroca , Netdev , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Gal Pressman , Leon Romanovsky , Michael Guralnik , Moshe Shemesh , Will Deacon , Alexander Gordeev , Andrew Morton , Christian Borntraeger , Borislav Petkov , Dave Hansen , Gerald Schaefer , Vasily Gorbik , Heiko Carstens , "H. Peter Anvin" , Justin Stitt , linux-s390@vger.kernel.org, llvm@lists.linux.dev, Ingo Molnar , Bill Wendling , Nick Desaulniers , Salil Mehta , Sven Schnelle , Thomas Gleixner , x86@kernel.org, Yisen Zhuang , Leon Romanovsky , Linux-Arch , linux-arm-kernel@lists.infradead.org, Mark Rutland , Michael Guralnik , patches@lists.linux.dev, Niklas Schnelle , Jijie Shao References: <1757925308-614943-1-git-send-email-tariqt@nvidia.com> <20250915221859.GB925462@ax162> <20250915222758.GC925462@ax162> <20250915224810.GM1024672@nvidia.com> <20250915231506.GA973819@ax162> <9d4cd8d2-343e-4448-ab59-65e69728c850@app.fastmail.com> Content-Language: en-US From: Patrisious Haddad In-Reply-To: <9d4cd8d2-343e-4448-ab59-65e69728c850@app.fastmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: TLZP290CA0009.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:9::18) To CH3PR12MB8583.namprd12.prod.outlook.com (2603:10b6:610:15f::12) Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR12MB8583:EE_|DS0PR12MB7772:EE_ X-MS-Office365-Filtering-Correlation-Id: d6e873a1-d0b4-417c-9bec-08ddf5060bcf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|7416014|376014; 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I don't get it why and how is that better - than using the correct CC flags for neon, also are you suggesting this in addition or instead of the CC flags fix natan sent above ? Using the correct CC flags by itself is sufficient and correct - and I don't see other neon users using the ".arch_extension simd" you mentioned , so why do you think it is needed here ? and I'm assuming you meant to add it like so? (incase it is really needed - I'm still not convinced it is ...) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/wc_neon_iowrite64_copy.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/wc_neon_iowrite64_copy.c index 8c07d2040607..cde3d11909a8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/wc_neon_iowrite64_copy.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/wc_neon_iowrite64_copy.c @@ -6,7 +6,8 @@  void mlx5_wc_neon_iowrite64_copy(void __iomem *to, const void *from)  {         asm volatile -       ("ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]\n\t" +       (".arch_extension simd;\n\t" +       "ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]"         "st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%1]"         :         : "r"(from), "r"(to) Patrisious. > > Arnd