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h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bf/WnuyeIERI/Rc14bKyV8xkvXuu/ZtjwnyDRRhEpxE=; b=STsekkTDIUrRSg9RPsPef0srJBT4KBzL1HPVIT8y/M88UBfkdcH43WxfH3hU0JLgOixTEZI+MsjQMDpKg8fjm6RDaR6V05Kx+TtGACaTpxi/qpzWZ6bRSzdFm76qlpcVxOFlsOsBnj3Qmh0Ak1OSXJyDYFAdXKeKN4t3PSIXYgQ= X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C From: Penny Zheng To: CC: , Penny Zheng , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v6 09/19] xen/cpufreq: neglect unsupported-mode request from DOM0 Date: Fri, 11 Jul 2025 11:50:56 +0800 Message-ID: <20250711035106.2540522-10-Penny.Zheng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250711035106.2540522-1-Penny.Zheng@amd.com> References: <20250711035106.2540522-1-Penny.Zheng@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00001CEB:EE_|CH8PR12MB9768:EE_ X-MS-Office365-Filtering-Correlation-Id: 4c321701-0e3e-4b23-5261-08ddc02e3ff3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|1800799024; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jul 2025 03:51:42.9070 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4c321701-0e3e-4b23-5261-08ddc02e3ff3 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF00001CEB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH8PR12MB9768 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1752205925370116600 Content-Type: text/plain; charset="utf-8" DOM0 could deliever whatever performance statistic (Px, _CPC) it parses, it= is Xen's responsibility to decide which one it shall accept. Xen rely on XEN_PROCESSOR_PM_xxx flag to tell which mode ( Px or CPPC ) current cpufreq driver supports, and accepts relative info. It will neglect unsupported-mode request and yields success. Signed-off-by: Penny Zheng Acked-by: Jan Beulich --- v5 -> v6: - new commit --- xen/arch/x86/platform_hypercall.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/platform_hypercall.c b/xen/arch/x86/platform_hype= rcall.c index 90abd3197f..3eba791889 100644 --- a/xen/arch/x86/platform_hypercall.c +++ b/xen/arch/x86/platform_hypercall.c @@ -539,9 +539,14 @@ ret_t do_platform_op( case XEN_PM_PX: if ( !(xen_processor_pmbits & XEN_PROCESSOR_PM_PX) ) { - ret =3D -ENOSYS; + /* + * Neglect Px-info when registered cpufreq driver + * isn't in Px mode + */ + ret =3D 0; break; } + ret =3D set_px_pminfo(op->u.set_pminfo.id, &op->u.set_pminfo.u= .perf); break; =20 --=20 2.34.1