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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by BN2PEPF0000449E.mail.protection.outlook.com (10.167.243.149) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9228.7 via Frontend Transport; Mon, 13 Oct 2025 05:52:15 +0000 Received: from epycpwr02.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Sun, 12 Oct 2025 22:52:14 -0700 From: Sivaprasad Tummala To: , , , , , , , CC: , Subject: [PATCH v2] eal/x86: enable timeout in AMD power monitor Date: Mon, 13 Oct 2025 05:51:57 +0000 Message-ID: <20251013055158.3037400-1-sivaprasad.tummala@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251013031619.2988915-1-sivaprasad.tummala@amd.com> References: <20251013031619.2988915-1-sivaprasad.tummala@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: satlexmb08.amd.com (10.181.42.217) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF0000449E:EE_|CH3PR12MB8709:EE_ X-MS-Office365-Filtering-Correlation-Id: b34fdb36-9c99-406a-9c84-08de0a1ca994 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:satlexmb07.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2025 05:52:15.3213 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b34fdb36-9c99-406a-9c84-08de0a1ca994 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF0000449E.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8709 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Previously, the AMD power monitor implementation did not enable the timeout, causing the lcore to remain in a wait state until an external monitoring event occurred or an interrupt was received. This patch enables the timeout-based exit condition, allowing the lcore to automatically wake up after the specified period. The maximum supported timeout value is 2^32 - 1. Fixes: c7ed1ce04704 ("eal/x86: add power intrinsics for AMD") Cc: stable@dpdk.org Signed-off-by: Sivaprasad Tummala v2: 1. fixed asm compilation error. --- lib/eal/x86/rte_power_intrinsics.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/lib/eal/x86/rte_power_intrinsics.c b/lib/eal/x86/rte_power_intrinsics.c index 489ad3983f..8a5f222aea 100644 --- a/lib/eal/x86/rte_power_intrinsics.c +++ b/lib/eal/x86/rte_power_intrinsics.c @@ -89,14 +89,14 @@ static void amd_monitorx(volatile void *addr) static void amd_mwaitx(const uint64_t timeout) { - RTE_SET_USED(timeout); #if defined(RTE_TOOLCHAIN_MSVC) || defined(__MWAITX__) - _mm_mwaitx(0, 0, 0); + _mm_mwaitx(2, 0, (uint32_t)timeout); #else asm volatile(".byte 0x0f, 0x01, 0xfb;" : /* ignore rflags */ : "a"(0), /* enter C1 */ - "c"(0)); /* no time-out */ + "b"((uint32_t)timeout), + "c"(2)); /* enable time-out */ #endif } -- 2.43.0