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Smith" Subject: [PATCH v2 15/15] kconfig: Allow x86 to pick CONFIG_DOM0LESS_BOOT Date: Thu, 5 Jun 2025 21:48:07 +0200 Message-ID: <20250605194810.2782031-16-agarciav@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250605194810.2782031-1-agarciav@amd.com> References: <20250605194810.2782031-1-agarciav@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: BN2PEPF000055DA:EE_|IA1PR12MB7615:EE_ X-MS-Office365-Filtering-Correlation-Id: e9760123-a68b-4eea-5822-08dda46a1b96 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?e1QfQJBTKobVhuf7KNjYIs6V/h4wodUoT4EfCGxWqV8k4/CKmVjKYHrn3rI2?= =?us-ascii?Q?H2PSLNUP15CySrvDWM3ANwUfozyCrjvZJAvumwkwBJmD3FogAiqrtctLSA7P?= =?us-ascii?Q?d4p+xSLUa0DeY/F/J8ARKW5X6JGaqg3GOy7TdPHorSxr/svPLGYtkUMaghEx?= =?us-ascii?Q?gnt/Fpi9Ku3Phe5CyWCX/WQlqrc9pvZbrIa26DNzJU5buIFjZ7eA1eI+hhKS?= =?us-ascii?Q?0K03Vvet2QteQu4lMXNYhmsDCn1cTARGkvD+HHKEYl5S4F+YrT4We6QpmKYf?= =?us-ascii?Q?Hi7Nhd9ih/gTA/MoqhldvYvbKe8xGdUnYRHC9PO4Z6YI0OTiASZdCCIM7TPX?= =?us-ascii?Q?stEvktKpb4mwolPUEGfYfX9n0QqPA/XTc30Yrb6jpFcOH5u1xIUwE51hsw/9?= =?us-ascii?Q?0o3L8tdEx6pUipzbnfRq0aal8Qlin9YX+O6dPWCorzaJnOCMvDjQ907nyKjI?= =?us-ascii?Q?/XHWlvhxan0LAvnGyIksA/BXNGaxSB2uBAXxi+UiRknuyuEdr9utonKuYzpX?= =?us-ascii?Q?Q25k52Kq1MMEuvakeVJNab96+EwXJCvgv79QZhVDIjdrVIUe3ts4wQWts6Fs?= =?us-ascii?Q?YyjbB42CkIye7UPlyqDPu/Zh9aV9kjluVxgZsX8NvLcWurF3yCMO+EcrcqsA?= =?us-ascii?Q?voMnkbXIWWkOLUBqwkb10U9QzwMZZrIXH6tAO1jVEd0+hXXWs4M9QICZHkO4?= =?us-ascii?Q?95dssUSrsfSvJZ7CRfyaH7zNGQ2qPg8z05Q/5u/KbDMlAerLXttEnzTZ8fWE?= =?us-ascii?Q?Alu9ZgG24xUMCvLzihBY0yHQjVJH8U2ZxZiENU7yqIqFrpx12TcnHwaZRzOs?= =?us-ascii?Q?oV/HaIg8JuFqSp6L1NcOFNVJVRklJROXI1paHICxV6KO52qA4dPUGmsGjF9Q?= =?us-ascii?Q?DSBMGX9cGlI/1vaDrI/bicCtjvZgTeIakDZSiep6sJb/4W2k5h5GypeipwnA?= =?us-ascii?Q?xBXN5Y40n0TIOlW8xWvWLHfHS6yBTrOu7fO8xpcTxml/YO3rba0QsJMSNVAK?= =?us-ascii?Q?B2aqioAsY/vWPgUp68uDqoPHo8j5UTUsrtg77Bv7i8dh90yKi09SCJRnXV8U?= =?us-ascii?Q?ZmlQaxhimCxuvpF+72YNUSU6RTA7/IkoSqDC2fJzl/fuyTASM5APNuM581fO?= =?us-ascii?Q?3605QWcvlaEGt6EKQpipCfthFqjtbc3qpqfDzFWXgjzYpEMT3Vxx1I/LPVE+?= =?us-ascii?Q?ZkcXXXn/TA0xmbSP1DxA9ugeVx5xlQqhqjtHgWNVJ3voNv4biAKW0KchLBrl?= =?us-ascii?Q?FkZ2qDxkuvVUjhaAkowt1DSNgaCS0nOKrogIIpbQBqEA19s23DFQ7Ez1i2xe?= =?us-ascii?Q?+Gr8XLkt9UOpObR6b1l8/VvRWZNfIhBh8QEL3BMps8rVrWVlzEo0nrgYVlEA?= =?us-ascii?Q?8ztF4Mpxkylfx+dH/KHCXF65cgqWQAU9cFJIIERE8w/ogT4yt1fEGxtxn+yN?= =?us-ascii?Q?6KLanifox63fIqQy91kK8gwm44fJzR5i1I3fAdgeKmdkY05lh8H1MPN4um6j?= =?us-ascii?Q?n4259CcMewz3QLSuStdFqqVSYoggpeRVS702?= 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)(376014)(82310400026)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2025 19:49:39.2372 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e9760123-a68b-4eea-5822-08dda46a1b96 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: BN2PEPF000055DA.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7615 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1749153084217116600 Content-Type: text/plain; charset="utf-8" Without picking CONFIG_HAS_DEVICE_TREE. In order to do that. Allow CONFIG_DOM0LESS_BOOT to enable a subset of the common/device-tree/ directory. x86 doesn't want dom0less-build.c, as that's tightly integrated still to the ARM way of building domains. Requires "unsupported" for the time being until all required patches make it through. Signed-off-by: Alejandro Vallejo Reviewed-by: Stefano Stabellini --- v2: * (required on rebase) Add an explicit dependency on HAS_DEVICE_TREE for STATIC_MEMORY and STATIC_EVTCHN so they're not pulled-in. Could use !X86 as well. --- xen/arch/x86/Kconfig | 1 + xen/common/Kconfig | 12 +++++++----- xen/common/device-tree/Makefile | 2 +- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index 7afe879710..4344b4289c 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -18,6 +18,7 @@ config X86 select HAS_COMPAT select HAS_CPUFREQ select HAS_DIT + select HAS_DOM0LESS select HAS_EHCI select HAS_EX_TABLE select HAS_FAST_MULTIPLY diff --git a/xen/common/Kconfig b/xen/common/Kconfig index 5353874e87..bcf87b4d9d 100644 --- a/xen/common/Kconfig +++ b/xen/common/Kconfig @@ -13,15 +13,17 @@ config CORE_PARKING depends on NR_CPUS > 1 =20 config DOM0LESS_BOOT - bool "Dom0less boot support" if EXPERT + bool "Dom0less boot support" if EXPERT && (!X86 || UNSUPPORTED) select LIBFDT - depends on HAS_DOM0LESS && HAS_DEVICE_TREE && DOMAIN_BUILD_HELPERS - default y + depends on HAS_DOM0LESS && (X86 || (HAS_DEVICE_TREE && DOMAIN_BUILD_HELPE= RS)) + default y if !X86 help Dom0less boot support enables Xen to create and start domU guests during Xen boot without the need of a control domain (Dom0), which could be present anyway. =20 + If unsure on x86, say N. + config DOMAIN_BUILD_HELPERS bool =20 @@ -152,7 +154,7 @@ config NUMA =20 config STATIC_MEMORY bool "Static Allocation Support (UNSUPPORTED)" if UNSUPPORTED - depends on DOM0LESS_BOOT + depends on HAS_DEVICE_TREE && DOM0LESS_BOOT help Static Allocation refers to system or sub-system(domains) for which memory areas are pre-defined by configuration using physical @@ -171,7 +173,7 @@ config STATIC_SHM =20 config STATIC_EVTCHN bool "Static event channel support on a dom0less system" - depends on DOM0LESS_BOOT + depends on HAS_DEVICE_TREE && DOM0LESS_BOOT default y help This option enables establishing static event channel communication diff --git a/xen/common/device-tree/Makefile b/xen/common/device-tree/Makef= ile index cc56f42df9..f5410e685b 100644 --- a/xen/common/device-tree/Makefile +++ b/xen/common/device-tree/Makefile @@ -3,7 +3,7 @@ obj-$(CONFIG_HAS_DEVICE_TREE) +=3D bootinfo-fdt.init.o obj-$(CONFIG_HAS_DEVICE_TREE) +=3D bootinfo.init.o obj-$(CONFIG_HAS_DEVICE_TREE) +=3D device-tree.o obj-$(CONFIG_DOMAIN_BUILD_HELPERS) +=3D domain-build.init.o -obj-$(CONFIG_DOM0LESS_BOOT) +=3D dom0less-build.init.o +obj-$(filter-out $(CONFIG_X86),$(CONFIG_DOM0LESS_BOOT)) +=3D dom0less-buil= d.init.o obj-$(CONFIG_OVERLAY_DTB) +=3D dt-overlay.o obj-$(CONFIG_HAS_DEVICE_TREE) +=3D intc.o obj-$(CONFIG_DOMAIN_BUILD_HELPERS) +=3D kernel.o --=20 2.43.0