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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?jlcg91CEuMIf+ctvDFelgMKhIcDpi6vOKdKp3H6d2lCgqkUyjUmfUgJvQMBH?= =?us-ascii?Q?MdJU+fyI5VvnInsxfbkvWHgan70G84QvucKTiMhvYqngPuL40TfrkIw7Ogn2?= =?us-ascii?Q?Wl6yPtwLI5QYIs1qgmZ7hj+lP8enDvWeAIpuDyWlTnsZQe+pwRBJrjYmnaj/?= =?us-ascii?Q?KtcrEAUq2L1tgd/SsKTpDfP08NLclweXVV37bbt9VLSYrEcswuvwrG/8hfs3?= =?us-ascii?Q?f348hR4xAem9frQebeE8wmKgciJVw/6d54Mu6V7JWEGQqToojGkG9MHHwIaG?= =?us-ascii?Q?3FUvGZU9gY3TZes/VNNGbgnWTasEDoMwd2Kc9PIN/ryYn7KBDxqd49T66ntW?= =?us-ascii?Q?zS2AjtXY6fF+Jj4X3XLrpe+tIkwYCeAzuBffKKRJAo+vn40K3mVzCuuosJVW?= =?us-ascii?Q?z6Ys16x24/FdWciBvhOigg9+6J5o2p/axBgojhzsccRclAjk9HlX4jMF70EI?= =?us-ascii?Q?HNArGg8Yzk1PuYp99WVf3W/X4j4pIFgrCXk5rg0+agBbZw+JgKlfG4v91N8G?= =?us-ascii?Q?ehsn+clYifJ25puWAIiM6lwuR/SxEKSicl33tQUx10g1o59pCC/4PDh/asea?= =?us-ascii?Q?yg7+bdMOxjwxd4dmwu3+RyTZRD3wFJTjDY2f1Yv3J1NX94HOdJttCaEicrer?= =?us-ascii?Q?Pzwkh1Hm5ezG/D/F3UEVMc27ThN7Vyrt6IcvXlY95NYHPVxpTWg7ny34487B?= =?us-ascii?Q?gJTqq1DcNckxvmJDOG/wOuNqWB1W6tVMeTPvAEmvomHgv2NeM4CG1PAYC/9b?= =?us-ascii?Q?16GVqwsqR6uGEYRc8OXsshKEJXwzIEul2xN9ys37NjZlvVFwHuHhp3Y+ya80?= =?us-ascii?Q?SQG5VpCAb+y7/KfG0ZTuRiI7woRol8VgOFl5lyFE8XRObCgum8s7xcP2XPr0?= =?us-ascii?Q?4uUf+ymvWyiRCFM7NUr/pTp2MNR9ewBGFT5w/PswKPWa3atpZ68m6Vlt4q0i?= =?us-ascii?Q?hx7B0wZnzhQVygQDylOVOiEHXrv9UXNn0PqaWl7sGBei1wPSbS3h795FEocM?= =?us-ascii?Q?/6WxQw+9zyVfGZC0TdaOHKtmEW3PHOaoneCckNP0tAFjNQ7kdNZJMdEWCE3o?= =?us-ascii?Q?FnLc/rsuTcGkBCoExE0mfCN02ZTYIBQ/IeciZtgLtJxvvPAxOa08w23iwNcs?= =?us-ascii?Q?/OGQrPRvt3DVzzvE5YfJNzJ2707ilfDTfjsAQ/uY1HjLONA5URdOlPLdQ/+Q?= =?us-ascii?Q?/k6fqDRTEC5lzdECBlbC8y5AmzMhpLtYIwM3AMDo5Scjny7QaeXrWwnKoplC?= =?us-ascii?Q?Uox4maklAUE+ilQFJUnB+1Nkkm2Z26zknxF5FwO3NMI1lI0H/XVY7/Q50/jM?= =?us-ascii?Q?OB85ttmdhHZbtpE7HJ/9OV0kDAHdLe2dsHHGMiHwK3aAW/O3abU6GhtAS/iL?= =?us-ascii?Q?n/Ack+oKwGGyznSL5kc7owi5z1MKcfFLiVGynprIoRXIRKx+0zw3Ad06993f?= =?us-ascii?Q?hT5lD9DllWv9j19b/lK2Cr3WIpc8LorloJlDn37q1E5hoMFbhdYN3jnAojkl?= =?us-ascii?Q?ARM9HSMmjHw0kr9PibPzyqy0/3LpFyOZFwGmjOOeYH5qbXkg2/3Yj4j4q0DX?= =?us-ascii?Q?7j6KkTDRRluuil59C/EwzZUyiq/uM5oow63YLqt/aNCIvQqcT7QR4MBTKJoR?= =?us-ascii?Q?ADyxI9kzPkWXDq6tWnh9MlA2SH/QCj2gJp4sV0v+4/wK82cjFKgqHAwXch09?= =?us-ascii?Q?2w8+1cGD8YYEGBkMq7MTpBfH5Bhk7i3OKQBJDW2PP7LxwImJ?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 708ce30b-8125-4c41-860b-08df260b1ccf X-MS-Exchange-CrossTenant-AuthSource: CHBPR12MB731189.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Oct 2026 13:42:08.0696 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +f72AXIRRRE/y4KAX7hQa3kmsYKAA5+mnF2E36z/IxAJRmDEeyyqWcgfOPBW5YhO X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY3PR12MB9553 On Wed, Oct 07, 2026 at 02:18:08PM +0530, Aneesh Kumar K.V wrote: > @@ -640,6 +640,39 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, > *___res = (typeof(*___res)){r0, r1, r2, r3}; \ > } while (0) > > +#if defined(CONFIG_ARM) && defined(CONFIG_THUMB2_KERNEL) > +/* > + * GCC may reserve r7 in Thumb-2 functions. Calls with eight inputs must > + * therefore use the assembly helpers, which save and restore r7 themselves. > + */ > +#define __arm_smccc_1_1_out_of_line(fn, inst, a0, a1, a2, a3, a4, a5, a6, a7, res) \ > + do {\ > + struct arm_smccc_res __res;\ > + struct arm_smccc_res *__res_ptr = (res);\ > +\ > + fn((u32)(a0), a1, a2, a3, a4, a5, a6, a7,\ > + __res_ptr ? __res_ptr : &__res);\ > + } while (0) > + > +#define __arm_smccc_1_1_inline(fn, inst, ...) \ > + __arm_smccc_1_1(inst, __VA_ARGS__) > + > +#define __arm_smccc_1_1_call_2 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_3 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_4 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_5 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_6 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_7 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_8 __arm_smccc_1_1_inline > +#define __arm_smccc_1_1_call_9 __arm_smccc_1_1_out_of_line > + > +#define __arm_smccc_1_1_call(fn, inst, ...) \ > + CONCATENATE(__arm_smccc_1_1_call_, COUNT_ARGS(__VA_ARGS__))(fn, inst, __VA_ARGS__) > +#else > +#define __arm_smccc_1_1_call(fn, inst, ...) \ > + __arm_smccc_1_1(inst, __VA_ARGS__) > +#endif I wonder if this could just be something simpler like #define __arm_smccc_1_1_call(fn, inst, ...) \ ({ \ if (COUNT_ARGS(__VA_ARGS__) >= 7 && \ IS_ENABLED(CONFIG_THUMB2_KERNEL)) \ __arm_smccc_1_1_call_(inst, __VA_ARGS__); \ else \ __arm_smccc_1_1(inst, __VA_ARGS__); \ }) ? (still needs to take care of the NULL res) Jason