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Smith" Subject: [PATCH 19/19] kconfig: Allow x86 to pick CONFIG_DOM0LESS_BOOT Date: Fri, 30 May 2025 14:05:25 +0200 Message-ID: <20250530120548.39550-1-agarciav@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250530120242.39398-1-agarciav@amd.com> References: <20250530120242.39398-1-agarciav@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042A9:EE_|IA0PR12MB7773:EE_ X-MS-Office365-Filtering-Correlation-Id: 1c03a2cc-6085-464c-2c76-08dd9f725acc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?piimtZczPktlCGfXmQW52dwvGy0ZtGx4sj1qHbgkKMAPep0qq6DEjm2v2Tbm?= =?us-ascii?Q?YzLogKsuhHEhdaK0N4fvQfGPifsMjFkwmpKSr0wvCmICHAA+Ygy51ZIBGBIf?= =?us-ascii?Q?n6Q0E9kRCEp3KIvMRq4IuriA2+F48NrafgWUJzgZwyJl0Ly/eX4llkTMKBYr?= =?us-ascii?Q?AV7DRXmQHIAUKbrykC891opQnBvdGdMVeoLU3tvc9pknTvQJNSov0E1Q6Xzw?= =?us-ascii?Q?BmdhpcZBiJGOVDgh3/MQuphummMLXwjoFoHQXMyHlovAlwpSxRjjO7tM83l+?= =?us-ascii?Q?kZoNKvoRGWDPWUZ5vMnsI+MAadRWCM8X7HkB3u4urFF4TgDHkoocePPozIr/?= =?us-ascii?Q?weUMmy3dYsVdWziMMQIG0w5wS2inTGpmPTXsfusPVh2gQ1wUN/cUQVeOyKNG?= =?us-ascii?Q?NqKhuwbZtFtKBDzLe/Fg5HXs1y6oS7FAYHfZQYT7MAgNCpZWNa90VapJf+Kp?= =?us-ascii?Q?KYapQRhbFwz0KESudjaVH6WB4eGVIFqadNStyiHqxHjMdbUPksbgtzEV3aas?= =?us-ascii?Q?XvEH1GwYQ/kotezL9juFpu8O/GKiVPCk4o4B1i6I2muxenbi02AfF+3uj5Tk?= =?us-ascii?Q?xjr0eBox7Sjy1lamXHe9YL6oj1XTQdmyh7eEbIym5IApZQcdeYjnyOLg3nFk?= =?us-ascii?Q?tw0VnXpcfH2Z+U5Had+w05jIL/gjPUrceMr+eqAy9jeXoYKCnXJxKmRjgARd?= =?us-ascii?Q?/KdN2VxEm7ZffjGVeeAN7Ec1sUow8KW92DirAEdP5nhjAjeDBAwnGnKUarbp?= =?us-ascii?Q?AztaJukiVs0QLp0/Gi96EPl/dWsnXLlIrsOTMKJta8c3/FlAiQiLNYxPmj3n?= =?us-ascii?Q?1QkXw2DQRtZRkw45sxjGYDS3pcrSeKxSa6JXopSzjkRXju0n853GT4Jt/0//?= =?us-ascii?Q?k96R3o/1r3jn+MtsU+EkyLEQcP2UkSMzwsV/OiJGb5DQ6FIaXnYf78v7facK?= =?us-ascii?Q?u6lxtnZ3UvlvOl0npVrb2rIXYb8ZOYPVWeae1hkH5mf4A1cAuBWcY21U6GOl?= =?us-ascii?Q?1MJxNQeqQZ4IINd1joLWq3eP7iX/Kl0PlKjZILpVxhRcQ1Qaoinx9d9klBKo?= =?us-ascii?Q?85ac43Zi1GWeN6UtwGx1qMc/CCtmnRFyJlVLtpMcQ8b64oUdDWIaRi/a2qEl?= =?us-ascii?Q?iPUU33fozMM5FzT+hxb7JGaynGHy3iC5hY17/2DP0XKMoNphOv2RtTewnJ3x?= =?us-ascii?Q?RZlQlEvw8wBtz63TJE7C1/gTKBz021cfCOzmS1KcjTE4cAjYaLLaisiVStBF?= =?us-ascii?Q?V4D97wr2VoK6J7sfGhJQqIZcFfEVZ0jSiIEvyb6ZHmUzNqChctlhAvEYagqH?= =?us-ascii?Q?nozfNZv310xx3JBQgpcBQNILXhMyUoERvvX5vOIu2KirnvXR6cTqif4HOvnS?= =?us-ascii?Q?tBgTTxzFqDh/bN3Em4b32/BACo+TRVjyYrC4dt0fNCBleTZn3YSOCKqzj1y6?= =?us-ascii?Q?1SMkkVAUfX7+hSenRn5lOOlmoNzB9koWhiW4tsDyg2WifKSxfnWblIAIZhVQ?= =?us-ascii?Q?NJkT3EUAiV5FTefd97ktFd1Bgqi56TTaVIyd?= 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)(1800799024)(36860700013)(82310400026)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 May 2025 12:06:05.3438 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1c03a2cc-6085-464c-2c76-08dd9f725acc 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: CO1PEPF000042A9.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB7773 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1748606787040116600 Content-Type: text/plain; charset="utf-8" Without picking CONFIG_HAS_DEVICE_TREE. In order to do that. Allow CONFIG_DOM0LESS_BOOT to take include 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. Only intended as a functional change for x86. Signed-off-by: Alejandro Vallejo --- I'm compiling out dom0less-build.c because it relies heavily on bootinfo. Initially x86 will keep its private builder even for multidomain boots. And will do so until boot_info and bootinfo are properly unified. --- xen/arch/x86/Kconfig | 1 + xen/common/Kconfig | 8 +++++--- xen/common/device-tree/Makefile | 2 +- 3 files changed, 7 insertions(+), 4 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 353ccbd06f..6e66657550 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 diff --git a/xen/common/device-tree/Makefile b/xen/common/device-tree/Makef= ile index 4c09e3fb2d..49d061733e 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