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Smith" Subject: [PATCH] x86: Conditionalise init_dom0_cpu_policy() Date: Thu, 17 Jul 2025 19:58:24 +0200 Message-ID: <20250717175825.463446-1-alejandro.garciavallejo@amd.com> X-Mailer: git-send-email 2.43.0 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: BL02EPF0001A101:EE_|BL3PR12MB6595:EE_ X-MS-Office365-Filtering-Correlation-Id: d8b8fea2-d781-4980-6ced-08ddc55b8e4c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?QqtQSCXpHyt51wPVPO8LYkdYzKL9WIPt8ctMqZTSd1GJOuQtUssM068R8BSj?= =?us-ascii?Q?zatF09XTd7CirqBGzi0B3EC4WuZV1zd0h5lWv1/9rirBMe0vdOucbgmBMWbq?= =?us-ascii?Q?It3ZqfxWLqe38TFWYNm6wkaMheDxkJFqnpz3QOp7Bsf04ELYxnI7qDcRzYPd?= =?us-ascii?Q?Se4X34OiL7i+9z/112PRQfJ1UQ6PakMDQ9g4rZPjsPxeNbDx0VGHEv+/3xFp?= =?us-ascii?Q?wwX7u4kV05rYP7roeAC/c1FuHEGq6KxiybRM45+tKhvT+VWvKNVg5mxu+SDO?= =?us-ascii?Q?OaASmNIMriIFRRPLjctPScf5MlkkhYf0Agh9U5XTAnrzpNvDz8KSMa5+MPiG?= =?us-ascii?Q?zEOHM31SJOeRsaaUVTQpzgp/TwZzXKEkRivhV6A/KZstFmK6guygUFAlE7DV?= =?us-ascii?Q?9myzG57o/8/NhPRm4LZjRYArJVBc7rinMK0UyoJYTaI0OLzdWmHifZ5MAarA?= =?us-ascii?Q?eM9y2HmBd1KpTncNYEl5ALx5z6IQXwqIxBvS2lLRTAaMZ6/lZM7hpowyaMcR?= =?us-ascii?Q?2BgthW0aaUdD57koT/3OVmAvli8CtIjZCD8po2vB5EHlujWm9CHSLi1uwomW?= =?us-ascii?Q?A6+xPvcgJsdoxZrcNcgJITx4Fw/q5Wxkyn8bvMxK/G3oB5vA75PZqFtpNzjI?= =?us-ascii?Q?YZrC4ZYIrBkTOXyMtSXyxFLkVlq8L8eBUftRGJMqKJkrgUD5kvN5qZNr0ILL?= =?us-ascii?Q?LAVq42/e41BUNLAku86X9kx8ioltlNgJiSKUTfIO9An5j1zKxopS63JT39PR?= =?us-ascii?Q?gd3q3Z/qkKmzB6+m8pNMZBq89cQN/O9VIZb0eTU8A6wp6KK6uLdx9wr9LPAW?= =?us-ascii?Q?gXprQ78S3XO98PDSRvko/ZAgBsc5E3LjeRRFmZe1Li+//V42VVwTF9/65vtZ?= =?us-ascii?Q?IUjBWTFI4Vp3bUkNAky96/rb0DSWrqWTGmNAdTmJRMt4zAeLHamWJ01cPPHb?= =?us-ascii?Q?6X7ClBlIwimYFQSnWQDiCu7gWhmIrhXDxWXNmIaEeQLR9j+By+quv3Nys/Ad?= =?us-ascii?Q?+hBQ8TE1w7Saf+PH6ID47hqoXTsqziEbFB3gIJsPeqBx3eDG/XsmpNWJ0EHN?= =?us-ascii?Q?J5o+I4ShqzovwFbeqiwAP3J3fUvzUsvGYZcaS+Gp/0mgpwrpJEi1/z2BCmmV?= =?us-ascii?Q?kFx5QUP2257wlT38/uUkwDaNJakvj1ddeBf0MOTk4tyiL/Y72nrv0q1Lay6I?= =?us-ascii?Q?EGp1+QWmUmxQkw8THSP+/D9lQn4VecnwInRVG/hIADh4HgaNIubUyU6aG2WI?= =?us-ascii?Q?/j3xLTVaNnYazm9D3YI6/sHqyClIkbErxdE4/wlQL0gScx23LKgipgWnxyww?= =?us-ascii?Q?ZwAquzhc5Y2qJmwFnm9orBCOI+dXVezJbxp4gIKfDmkyKTAz07clJGj44NuK?= =?us-ascii?Q?vB4jzJapvkQttlztuPXfBkE4ZTFX8FAk/St3C8Z3/7L4D+veV8+KlSue4A7+?= =?us-ascii?Q?bOC/rZ7iCjpy7XzEI8BIoviRAtqxOoI7F0KsbQSdlYDTLc+88/UmXCY6BTZ1?= =?us-ascii?Q?BVPQpDD7EDF7jY7XS7A45hF7P2Nrm/jUdnDk?= 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)(1800799024)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jul 2025 17:58:37.6111 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d8b8fea2-d781-4980-6ced-08ddc55b8e4c 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: BL02EPF0001A101.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB6595 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1752775141984116600 Content-Type: text/plain; charset="utf-8" Later patches will keep refactoring create_dom0() until it can create arbitrary domains. This is one small step in that direction. Signed-off-by: Alejandro Vallejo Reviewed-by: Denis Mukhin =20 --- xen/arch/x86/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index c6890669b9..6943ffba79 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -1054,7 +1054,8 @@ static struct domain *__init create_dom0(struct boot_= info *bi) if ( IS_ERR(d) ) panic("Error creating d%u: %ld\n", bd->domid, PTR_ERR(d)); =20 - init_dom0_cpuid_policy(d); + if ( pv_shim || d->cdf & (CDF_privileged | CDF_hardware) ) + init_dom0_cpuid_policy(d); =20 if ( alloc_dom0_vcpu0(d) =3D=3D NULL ) panic("Error creating %pdv0\n", d); base-commit: 55719030b0bb0069fc8b57cd808dc98dc9d39add --=20 2.43.0