From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2065.outbound.protection.outlook.com [40.107.94.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7F4C1EB189; Wed, 14 May 2025 07:25:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.94.65 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747207555; cv=fail; b=fEi167TW3TJydhJUBZJ0VPHO6Y5xBDbea1yReu4sUO9+gS9x3AKYkRA5uorlGVOlC6VYGYAQFfFYYAnUzbmfGqFdB3pPiNAj5TZ9Pb/k+nNe3SGNU0EaNbmkthqCGhllCBdk5uwVJV35UP4uF8ZvALUKuDO0b6EBWOJ2ualgYDk= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747207555; c=relaxed/simple; bh=xJXO5Iw9dB7MUkMFBHW17x3ettNMKLQFBYTc8QacsNY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Zh/F0Pwa83ZFe34Oghnh0jeDs0uZHqZ1ZgkAN0Y5emETUmpW39rQElLNE21Gb9WXKyWyTqlEcRyIQwvpoI55DnWFguZVWeqOYJlWu+hTXYYodfjYbTFfhxuPR2pbBksi+0LatAwXgY+szxV8okUm8mUqmcO0sIvc2m1Ol3wv8nE= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=ja37ePfo; arc=fail smtp.client-ip=40.107.94.65 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="ja37ePfo" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=RAtdhlIVUnX1XopUEO3Wd3iXmLdNxrMIY32gE6fpCiGF5WGof3HiQXlBL/yrDh8sXOhlbZGL0wH7V4tsNap0oaydYVVEJDsHlXQapmf2IHbzUP51Qz9bst5GLnmGM1KIHAZG3UbA57X9mI5un7QmxzJi/qcD9FtLJrmJbN4DpL0JY/PeI15XX0igy1AHcUP9XqBFkZCBkdOvKlYWqVX0k0qmSiAgMBuhxnnhBpZE95p4M+Hps4heqOOWVtzG0SGnY0UUnpp6fOLjbmC1CJ18BnN/Ob3HlD0lir2KryUZORLbR3ZixKuegtCAHCJ65LIbX1SkKBcylxxyNk8s2j6H/Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=b1iHTfv9yMvNy2qO6EYwyRbCzn19vNmbKffToOBhqFI=; b=TuC31B7/1HLlhHP14lKjDUSBSzs2qgi1te3dgFesfYRv26sWagfEWctZBBWnokzWAMssD5Xb7rC6ulQc2vPMuvjZlGzfjfAa8uR2uAMo9LluLRbmzkzAjNNFLKunywjPuKwIjhSLN54AMuH3g0fdavZDjflo9tHNpEIrNlbyvA+10z9zbZFCA7lN0vAqrs3Tm95530OLeTj152IcZFZHji+bS3fNlS0oUnfn5EXtkb9FmLRJU53zZNQeUGBanAmap9rdmYbrMJJZ333gMhf6lRrqIYz0ZEtHCauuk7JkxcLyj8l3ErXpXwG7Yb0fpUfiO4WD1uO1l3N0O+YBxiEYtA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=b1iHTfv9yMvNy2qO6EYwyRbCzn19vNmbKffToOBhqFI=; b=ja37ePfox8q5xuEXR5Sb2z9vxwHe6WiWH1UGP7ooL9m4i4qvnTZ0QInC9PYSZEqB2YMovHeEV4EeEqa8inutRH2qrzpe4pMN+Yf9iOHLF8vQC7OdeUXyWjmDxT/NdH9nNm2L6UNpKFSO1ai/Fcu0w6iJhofnkbwaxfzrA3VMS40= Received: from BN1PR13CA0017.namprd13.prod.outlook.com (2603:10b6:408:e2::22) by PH7PR12MB6786.namprd12.prod.outlook.com (2603:10b6:510:1ac::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8722.30; Wed, 14 May 2025 07:25:48 +0000 Received: from BN3PEPF0000B077.namprd04.prod.outlook.com (2603:10b6:408:e2:cafe::ff) by BN1PR13CA0017.outlook.office365.com (2603:10b6:408:e2::22) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8722.19 via Frontend Transport; Wed, 14 May 2025 07:25:48 +0000 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 (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 Received: from SATLEXMB04.amd.com (165.204.84.17) by BN3PEPF0000B077.mail.protection.outlook.com (10.167.243.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8722.18 via Frontend Transport; Wed, 14 May 2025 07:25:48 +0000 Received: from BLR-L-NUPADHYA.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 14 May 2025 02:25:38 -0500 From: Neeraj Upadhyay To: CC: , , , , , , , , , , , , , , , , , , , , Subject: [RFC PATCH v6 18/32] x86/apic: Initialize APIC ID for Secure AVIC Date: Wed, 14 May 2025 12:47:49 +0530 Message-ID: <20250514071803.209166-19-Neeraj.Upadhyay@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250514071803.209166-1-Neeraj.Upadhyay@amd.com> References: <20250514071803.209166-1-Neeraj.Upadhyay@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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: BN3PEPF0000B077:EE_|PH7PR12MB6786:EE_ X-MS-Office365-Filtering-Correlation-Id: 3bd9e8a7-44b5-4bf6-6ec3-08dd92b88c4c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|7416014|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?aacqt6K8Cs208FJhZzGRFKHv5i+unSDjh7JQHfF/LSxHmdidtJhQLZEXcwJ2?= =?us-ascii?Q?jyUjKsI/uiMcAYJZwG3dACP2/lDislJPbnw7xK7/PvzhHzuy3jb5qBz3If1i?= =?us-ascii?Q?Ud9fBDcqH/TLjq+Zm46KOEYp34MPq5rGZVhVlra5CTl0ItDmW+vQGbq6npCI?= =?us-ascii?Q?jHgyn2o2hV9NG2uNuDkBseNt6czg1jTxUqO5XDEahjgp/efiskdY+6Im+cka?= =?us-ascii?Q?P08lus9PhEABaZN8xgNmLSxq91jfpvXJXyEcVJITIqBHT6miQbz+iE1yV+ZO?= =?us-ascii?Q?6hhzK9GVFx/rsKkC/kCvmyQDx+7OewefqOgxOvettChlB5qNOb0FAza2DozH?= =?us-ascii?Q?4zIEuumE9K8QELJUe/y5XI/kX3jbZmEPudwlyv6v6/VrGEwN1nFpPibN6WdB?= =?us-ascii?Q?WM339UoI6t4qVbvrJt3SMHbB6iukQN0upbjK+73rtBVPuuly0SEJWQLZGyBJ?= =?us-ascii?Q?+UP33tb2AHeeve0FCY1czGPy3713ERiZryOmypZQff9ih3njZJWrOo9wwAPV?= =?us-ascii?Q?HaYaKdsLH0FsPb/M4vdVYWghyslvagop3jDeq6CHWsnYqmtEZeUDbzRWR538?= =?us-ascii?Q?xgPvjzdgrzEfDNuo1yxdL0mnyoulTTpJ7kx+SIxdgyTFwo6oYToClHr/SGCU?= =?us-ascii?Q?eV0DZzGZs+5YgiQkKfnsd/RkZXd8ZNBWKO04i0otoiwQLMdnGUhC3/dhaUBL?= =?us-ascii?Q?Epdqu2bE0p7vaFitkIHADvAwpTUrWgkdvozvVXHW2SLI1dKveF9z7YIv4vfd?= =?us-ascii?Q?zHW8casTJd/OLoCkRZDH2Fgi3zdT1sgxzgV37F0jt6xGzLbz0j9VzZaH1jWI?= =?us-ascii?Q?vUF0jaOkOtwJj0h0QTlJqCoo8hh52b0oQRhKbK4cjU0Zi6CDRWh8aSrqHHZP?= =?us-ascii?Q?b5CnWnZGxcROJwIMv5oqzO1IDN0M+ldKmwxVMZDRLDQ/GlZmZEI9CAkpBXKn?= =?us-ascii?Q?txOo6Q43aYg74HvSTtcWgSwN7JEOpn8xy5/9mbM1h2O6wNBxiSextMINK5st?= =?us-ascii?Q?WYQ6fK3XvKCfazBQC3VHzj7Q1uxpoihzCuPNfxz9Am0X6gczt4H3koUT46vI?= =?us-ascii?Q?q9eXnyiHGgHxZYSsWkdnS9YQX9voyyGFzEqr/77g6tMyLa6hNJK1h7gEpoYt?= =?us-ascii?Q?s9Ekuu5KtM26PwSeZPoAnYcdKW3icVRqv5WhgR+toE/VqSYpc4zwfJxJP/SJ?= =?us-ascii?Q?CIRgXQLgOAgqhUI91nspcBzJUbuEK+jg+Y6vR/KN3t/IGYM6WVcV++elHv6v?= =?us-ascii?Q?VvmJlPgVClfs1f1IFcPa97tNh0wb+s04Xq/XxHZUoQmZSY7ZdfA39nhb2egO?= =?us-ascii?Q?K5nDdJ45ZrZ8OFoSAnytucmOLeW799IdO2NEOJAMMSqO7s7mMv9qBwafoIoT?= =?us-ascii?Q?Vy9i88VIt//J7N0XlWDC56o/VWRu6A8Yl3MQq9wEKj21c5FOC2yJVFowD4L+?= =?us-ascii?Q?Dnmv/UP29M5Ywad7FFNk+dpyOPnlyloHrfx3vwPCF6jd4wfbtDSz7EIgBFDX?= =?us-ascii?Q?vzf9kp2BTOnuZr8wUsWxjP4rhUUZGlOHKiJz?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(7416014)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 May 2025 07:25:48.1499 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3bd9e8a7-44b5-4bf6-6ec3-08dd92b88c4c 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: BN3PEPF0000B077.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6786 Initialize the APIC ID in the Secure AVIC APIC backing page with the APIC_ID msr value read from Hypervisor. CPU topology evaluation later during boot would catch and report any duplicate APIC ID for two CPUs. Signed-off-by: Neeraj Upadhyay --- Changes since v5: - Use common apic_set_reg(). arch/x86/kernel/apic/x2apic_savic.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/kernel/apic/x2apic_savic.c b/arch/x86/kernel/apic/x2apic_savic.c index 186e69a5e169..618643e7242f 100644 --- a/arch/x86/kernel/apic/x2apic_savic.c +++ b/arch/x86/kernel/apic/x2apic_savic.c @@ -131,6 +131,18 @@ static void savic_write(u32 reg, u32 data) } } +static void init_apic_page(struct apic_page *ap) +{ + u32 apic_id; + + /* + * Before Secure AVIC is enabled, APIC msr reads are intercepted. + * APIC_ID msr read returns the value from the Hypervisor. + */ + apic_id = native_apic_msr_read(APIC_ID); + apic_set_reg(ap, APIC_ID, apic_id); +} + static void savic_setup(void) { void *backing_page; @@ -138,6 +150,7 @@ static void savic_setup(void) unsigned long gpa; backing_page = this_cpu_ptr(apic_page); + init_apic_page(backing_page); gpa = __pa(backing_page); /* -- 2.34.1