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Date: Tue, 10 Feb 2026 12:41:35 +0100 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Jan Beulich Cc: Bertrand Marquis , Andrew Cooper , Anthony PERARD , Michal Orzel , Julien Grall , Stefano Stabellini , xen-devel@lists.xenproject.org Subject: Re: [PATCH v5] xen: Add Darwin.mk Message-ID: References: <49c0bd388d45b6936bd852d99fbbc262fb078253.1770633598.git.bertrand.marquis@arm.com> Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: X-ClientProxiedBy: MA2P292CA0015.ESPP292.PROD.OUTLOOK.COM (2603:10a6:250:1::12) To CH7PR03MB7860.namprd03.prod.outlook.com (2603:10b6:610:24e::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH7PR03MB7860:EE_|CH8PR03MB8227:EE_ X-MS-Office365-Filtering-Correlation-Id: 8a4fe45a-7a2a-45cc-dd0d-08de68995a89 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016; X-Microsoft-Antispam-Message-Info: =?utf-8?B?QUZLeDlNUWMyMHhmRkVuL1FYN3VTT3JGV2hvQXkwWU9wZU91U01SQ2F4SVRn?= =?utf-8?B?cFZWcnZheHZCMFVJS21YbjRwa0o1cU9QdDZ3elUxZzFJc2VvYzRBaUNjdnZX?= =?utf-8?B?RlFwSDhPNzUrVTNxSDJkY3VuemRGNEcxRWhEMXEzWW1hcmRvbURUbmIvbmtj?= =?utf-8?B?U2NadjFuT0lIS3Jzb2N4bTNRdE1xTUY2T2lkMnZvVGVZVTB5TWJneE1HSnAv?= =?utf-8?B?YlJMbWwvODZvaTVtL0p3c0VoODZ2WEduQW9aR3pSWTl1eXk3RkZ1cXc4aGpw?= =?utf-8?B?Z3V5VllXb3kyWHdHQ2tNZFVyM211TU1lb2pPSUNiWmdob0x2ejBvbmhtcGxU?= =?utf-8?B?dzB4S0xvTFBiZkhmRk5va3FNczFhRmJRbCtpMkJaVEgrWTNWQlZnTG5MWHV1?= =?utf-8?B?QXBzY3ZWaDQ1ZnNsUUdDd3hDZUtHUm5EUEZFdDZwbXR4RDhyL0RSRGV2cVVM?= =?utf-8?B?NS80ZjJwR3l0SERLSlV5citBRGF3YmpUeHhqSE9YMzZSWmR6WktxS2ZEQ1gr?= =?utf-8?B?ckordFFtejdMRXpwWFV1NElaT3owNWx6SVZvc256ZWxtUHl5ZjE0NmpnZTVa?= =?utf-8?B?cHBSNFRzUnJKZmR1MjdEZzRhMjBCRnhPcFVzTUIvZTZKOGdHQkFMWCtDY0Rl?= =?utf-8?B?NmJ1dkN2UTQxdlNIbDFVODVrdjl5UFFGUW5ndlNYaUxCaVJxUjh0V0FDaml0?= =?utf-8?B?YXFBS2dtOUxxeEJhNDBiSnk0emhISzVkMHR3bHV3aTJlRXN3WWRNTC9SYTlV?= =?utf-8?B?QjcxemhGaHBlOG90QlpZNm4yVEZFejM4N1EwY1Y0ZThqMGNMNTl6VUdnN0tV?= =?utf-8?B?UmJTa1c0aGZhOFFvTEhIc2h5YklIL0p2aFpTZkNvQWZtQTdyQXhNNmxQSTh6?= =?utf-8?B?Y01LUWJyb1dVYU1rVTZ2dWVRck05alpTZzdpdGYvbGt2QkxLaFVJT3B1dmx4?= =?utf-8?B?OUEzaDNWM3BWdGJwOWQ2NGxPMWhQMm1CVmg4SWIxWHhpR0hIOGs1UzQyaUxZ?= =?utf-8?B?TWNhWkhxdGY4UkJOU2RpMWZ2d2crbHhmOXgra2pzTlI5bGdZbU9sd281cmVF?= =?utf-8?B?WGZRcytVdnRrbFpJcGRHTFo2cTV2MEdRNnV5RGNGb3RGVS9UQmNXT3BFK2s2?= =?utf-8?B?SWRmb2FmRDdncWNqYnlqUEhrZDBBOUllWFo4SmNaVWxNUFJVYnd1ZS82Z2N1?= =?utf-8?B?QXZGei9aZHMxMVozU2VIaktqNGZvRzhIYTQrWVhaWGpsZjJMV1h4VnV4VllW?= =?utf-8?B?ZUZaNmlxK3VoeW5abG5abDh4RkJGS0dYNk03dm9ZVlZMc0lFMExpSjN1V2Mx?= =?utf-8?B?Rk9RZ0RkbndwSU9SYm1oYzR1WE4vRXJHTEpBWm9sZkE1VnF3UnN0YVM1UkE0?= =?utf-8?B?WGs4Z0RhWU5CZVN4QXZYN2toTVc3eHdYRzlmbUhzTWdRbU1VMFRVRVY0Y0Z0?= =?utf-8?B?TENvZ2RFSEMvWDQvSkF4QU81eXF5QUdaaFZzMmNRWCt4WUhRV3hmNGxueUpQ?= =?utf-8?B?akZOemJrYk5ZaU1uZW05LzJsRDhGNi9pVnNBdk9OVVY2Ri9jOFZkYUZmL3da?= =?utf-8?B?a2srMDRvVytXWXpGOHFvekFGeW96VG4vLzlqS1FUenYrNE0wK1hHT1o5by9r?= =?utf-8?B?RW5UQ3grQisxWHBZMWVjcDhES1M3NnVsbXFkUGZONGZldzB5TWV3UXluVU5H?= =?utf-8?B?R3huYjdnRko5MnJjSER0Smo4dHhyQ3daNnpDcGczRVl2VEk0VnZqbXlmNC9M?= =?utf-8?B?cVdiSHlQY1NmUHZENi9iTHRnS2gxdzBwaTlJbEo0NDVQQnUzTmVSSzM3WERl?= =?utf-8?B?Y01nSjROSEc3OEszSG1hQm1Kam9BNlJEbEFJNGFuNlRxZ2NPa1F4Vng4ODZo?= =?utf-8?B?bTFHTFdFUVBUczA0Q0h6Z2NpOWdZSXlDSTE5UFFZVmd0K3pCSVo1VVRtSUlr?= =?utf-8?B?eXJ4dHBhWHhHQ3FzZG1keFdhN0tQQUFEcGtWclc2MjN0d2pWRTdxbE5DS2Nn?= =?utf-8?B?cTZnYVBYazBaMzdjZUdmeWNPWUx0dHgxMzc1dFZiSWtQWUFZQ29DUGExbERM?= =?utf-8?B?MmVrTjFpZkhxZzdUMlppT1dvZjU2cCtTQmtnWUtvL0VidmpoNDVOZm9CTjB0?= =?utf-8?Q?qaH4=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH7PR03MB7860.namprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(1800799024)(366016);DIR:OUT;SFP:1101; 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For both aarch64 and x86-64 they say they use > the standard ABI with some modifications. We may want to evaluate whether > those modifications are actually compatible with what we need. >=20 > Talking of x86-64: Has building on an x86 Mac been tested as well? > Especially if that doesn't work, it may want mentioning. I no longer have access to an x86 Mac, those are about to disappear. FWIW, I build x86 on Mac using the Docker containers, just as the CI does. OSX Docker allows running x86 containers on arm64 using the "Rosetta 2" binary translation layer. I've attempted doing a cross-build from an arm64 Mac using the x86-elf toolchain, but got the following error: % make XEN_TARGET_ARCH=3Dx86_64 CROSS_COMPILE=3Dx86_64-elf- HOSTCC=3Dgcc -C= xen V=3D1 [...] /Library/Developer/CommandLineTools/usr/bin/make -f ./Rules.mk obj=3Dcommon= need-builtin=3D1 x86_64-elf-gcc -MMD -MP -MF common/.bitmap.o.d -m64 -DBUILD_ID -fno-stric= t-aliasing -std=3Dgnu99 -Wall -Wstrict-prototypes -Wno-unused-but-set-varia= ble -Wno-unused-local-typedefs -O1 -fno-omit-frame-pointer -nostdinc -fno= -builtin -fno-common -fzero-init-padding-bits=3Dall -Werror -Wredundant-dec= ls -Wwrite-strings -Wno-pointer-arith -Wdeclaration-after-statement -Wunini= tialized -Wvla -Wflex-array-member-not-at-end -Winit-self -pipe -D__XEN__ -= include ./include/xen/config.h -Wa,--strip-local-absolute -ffunction-sectio= ns -fdata-sections -g -malign-data=3Dabi -mindirect-branch=3Dthunk-extern -= mindirect-branch-register -fno-jump-tables -mfunction-return=3Dthunk-extern= -Wa,-mx86-used-note=3Dno -fno-stack-protector -I./include -I./arch/x86/in= clude -I./arch/x86/include/generated -DXEN_IMG_OFFSET=3D0x200000 -msoft-flo= at -fno-pie -fno-exceptions -fno-asynchronous-unwind-tables -Wnested-extern= s -DHAVE_AS_QUOTED_SYM -DHAVE_AS_MOVDIR -DHAVE_AS_ENQCMD -DHAVE_AS_NOPS_DIR= ECTIVE -mno-red-zone -fpic -mno-mmx -mno-sse -mskip-rax-setup -fcf-protecti= on=3Dbranch -mmanual-endbr -fno-jump-tables -mmemcpy-strategy=3Dunrolled_lo= op:16:noalign,libcall:-1:noalign -mmemset-strategy=3Dunrolled_loop:16:noali= gn,libcall:-1:noalign -Wa,-I./include -Wa,-I./include '-D__OBJECT_LABEL__= =3Dcommon/bitmap.o' -mpreferred-stack-boundary=3D3 -c common/bitmap.c -o = common/.bitmap.o.tmp -MQ common/bitmap.o ./arch/x86/include/asm/bitops.h: Assembler messages: ./arch/x86/include/asm/bitops.h:511: Error: found ' ', expected: ')' ./arch/x86/include/asm/bitops.h:511: Error: found ' ', expected: ')' ./arch/x86/include/asm/bitops.h:511: Error: found ' ', expected: ')' ./arch/x86/include/asm/bitops.h:511: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:21: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:21: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:29: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:29: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:29: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:21: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:20: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:21: Error: alternative feature outside of f= eatureset range ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:28: Error: found ' ', expected: ')' ./arch/x86/include/asm/nospec.h:29: Error: alternative feature outside of f= eatureset range I haven't investigated further. Seems like some issue with alternative and the uses of CPUID defines. We probably want to mention in the commit message that only arm64 builds have been tested so far. Thanks, Roger.