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client-ip=165.204.84.17; helo=satlexmb08.amd.com; pr=C Received: from satlexmb08.amd.com (165.204.84.17) by CH1PEPF0000AD78.mail.protection.outlook.com (10.167.244.56) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.8 via Frontend Transport; Tue, 22 Sep 2026 09:02:35 +0000 Received: from satlexmb08.amd.com (10.181.42.217) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Tue, 22 Sep 2026 04:02:35 -0500 Received: from localhost.amd.com (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49 via Frontend Transport; Tue, 22 Sep 2026 04:02:33 -0500 From: Baorui.Liu To: CC: , , , , , , , , Baorui.Liu Subject: [RFC PATCH v2 0/1] cpufreq: virtio frontend to report host CPU frequency Date: Tue, 22 Sep 2026 17:02:23 +0800 Message-ID: <20260922090224.430-1-baorliu@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260916073735.541-1-baorliu@amd.com> References: <20260916073735.541-1-baorliu@amd.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD78:EE_|MN6PR12MB8491:EE_ X-MS-Office365-Filtering-Correlation-Id: f070666b-1e15-4e34-b911-08df18883edb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|36860700016|1800799024|82310400026|56012099006|11063799006|10067099003|22082099003|18002099003|13003099007; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: BRmd+XpC6jk2ROS8cxsL/9yeTjZU0EVWySQ79tiB/wBxNKMnwN+D0AZzEZoVC3OHqjXcDrt4HOqd7YlWC71eCjJFvwQcYZiGNbTgfvxKeosI6VkCni8/9vULcg9o0NdY/dT/VPhLEQoaPYMFgFpOB1lLe7yZ/f/zIemOfybSe32hd8yn5iBBF8QIyrBbt1FxC0CoagMtqhnWNJP6Ce8uEbV3qit7N4TeVpVKC5Y+NKDnvffcLGq4qHpAjbwr2MlFv5EVXXkHSSuA3FfeviTgz0Zjvmlied7TpVxjDdVkfBIlCAtD8jGUCpGWb49Gb9Ld9AnVUY+czbr15tptpNuJiLR+OBa3ng/md2hqGOfWb4t39AKrXW6IH5tEaZuFVkQrCEoXXN6aE2PbFgE0+uCygKdSwGNrFsVylYegg441E9UYsbKmdcXVezAaHBFsg23K X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Sep 2026 09:02:35.8554 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f070666b-1e15-4e34-b911-08df18883edb 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD78.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN6PR12MB8491 This is RFC v2 of the guest virtio-cpufreq frontend. Changes since RFC v1 ==================== - Fix 0-day kbuild error: cpufreq_generic_attr is gone on current linux-pm; use cpufreq_freq_attr_scaling_available_freqs. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202609191437.OaXd0Blz-lkp@intel.com/ RFC notes unchanged: experimental virtio ID 42, hardcoded OPPs, sleeping .get(), QEMU backend is a separate series. v1: https://lore.kernel.org/r/20260916073735.541-1-baorliu@amd.com Baorui.Liu (1): cpufreq: virtio: add driver to report host frequency to guests drivers/cpufreq/Kconfig | 14 ++ drivers/cpufreq/Makefile | 1 + drivers/cpufreq/virtio-cpufreq.c | 240 +++++++++++++++++++++++++++++++ include/uapi/linux/virtio_ids.h | 1 + 4 files changed, 256 insertions(+) create mode 100644 drivers/cpufreq/virtio-cpufreq.c -- 2.34.1