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Sun, 22 Mar 2026 03:25:02 -0700 From: Shani Peretz To: CC: , Shani Peretz Subject: [PATCH 0/2] Fix a doorbell race on Cortex-A78AE Date: Sun, 22 Mar 2026 12:24:57 +0200 Message-ID: <20260322102459.141958-1-shperetz@nvidia.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW1PEPF00016159:EE_|DS0PR12MB7826:EE_ X-MS-Office365-Filtering-Correlation-Id: 2de992dd-9f69-4586-1fc2-08de87fd5293 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|36860700016|82310400026|1800799024|18002099003|56012099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; 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Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: MW1PEPF00016159.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7826 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Fix a doorbell race on Cortex-A78AE where the compiler reorders a 64-bit WQE load before the 32-bit stores that construct it, causing stale data to reach the hardware doorbell. The first patch fixes the root cause by passing a pointer and adding a compiler barrier; The second patch reverts the crypto march extension workaround that is no longer needed and that broke builds without AES support. Shani Peretz (2): common/mlx5: fix doorbell race from compiler reordering config/arm: revert forced crypto extension for Cortex-A78AE config/arm/meson.build | 7 ++----- drivers/common/mlx5/mlx5_common.h | 12 ++++++++---- drivers/compress/mlx5/mlx5_compress.c | 2 +- drivers/crypto/mlx5/mlx5_crypto_gcm.c | 6 +++--- drivers/crypto/mlx5/mlx5_crypto_xts.c | 2 +- drivers/net/mlx5/mlx5_flow_aso.c | 12 ++++++------ drivers/net/mlx5/mlx5_flow_quota.c | 2 +- drivers/net/mlx5/mlx5_rxq.c | 3 ++- drivers/net/mlx5/mlx5_tx.h | 4 ++-- drivers/net/mlx5/mlx5_txpp.c | 4 ++-- drivers/regex/mlx5/mlx5_regex_fastpath.c | 2 +- drivers/vdpa/mlx5/mlx5_vdpa_event.c | 2 +- 12 files changed, 30 insertions(+), 28 deletions(-) -- 2.34.1