svc_smccc_hvc(9)

svc_smccc_hvc(9) 🧚💅

okay bestie, welcome to the Kernel API Manual, section 9 — this is the svc_smccc_hvc(9) page, and it’s giving hypervisor call between normal and secure world. 🌈✨ no cap, that’s the whole plot.

💖 NAME 💖

svc_smccc_hvc — hypervisor call between normal and secure world. literally the normal world and the secure world having a supervised lil’ chat through the hypervisor. 🫶

✨ SYNOPSIS ✨

void svc_smccc_hvc (unsigned long a0 , unsigned long a1 , unsigned long a2 , unsigned long a3 , unsigned long a4 , unsigned long a5 , unsigned long a6 , unsigned long a7 , struct arm_smccc_res *res );

it returns void, so don’t go looking for a return value, bestie — the results come back through res. 💅

🫶 ARGUMENTS 🫶

okay so here’s the register lineup: eight unsigned long args, all called a0 through a7, plus one result struct. no mystery, no cap:

• a0 — argument passed in registers 0. 😌
• a1 — argument passed in registers 1. ✨
• a2 — argument passed in registers 2. 💖
• a3 — argument passed in registers 3. 🎀
• a4 — argument passed in registers 4. 🦋
• a5 — argument passed in registers 5. 🌸
• a6 — argument passed in registers 6. 🫶
• a7 — argument passed in registers 7. 🔥
• res — result values from register 0 to 3. 🎀 this is where the tea gets returned.

🌈 SEE ALSO 🌈

bestie, if you want the whole Stratix10 SVC extended universe, it’s right here. first the kernel file, then every single cross-reference — yes, all of them, periodt:

• Kernel file ./drivers/firmware/stratix10-svc.c
• SVC_NUM_DATA_IN_FIFO(9)
• struct stratix10_svc(9)
• struct stratix10_svc_sh_memory(9)
• struct stratix10_svc_data_mem(9)
• struct stratix10_svc_data(9)
• struct stratix10_svc_async_handler(9)
• struct stratix10_async_chan(9)
• struct stratix10_async_ctrl(9)
• struct stratix10_svc_chan(9)
• struct stratix10_svc_controller(9)
• svc_pa_to_va(9)
• svc_thread_cmd_data_claim(9)
• svc_thread_cmd_config_status(9)
• svc_thread_recv_status_ok(9)
• svc_normal_to_secure_thread(9)
• svc_normal_to_secure_shm_thread(9)
• svc_get_sh_memory(9)
• svc_create_memory_pool(9)
• svc_smccc_smc(9)
• svc_smccc_1_2_full(9)
• get_invoke_func(9)
• stratix10_svc_request_channel_byname(9)
• stratix10_svc_add_async_client(9)
• stratix10_svc_remove_async_client(9)
• stratix10_svc_async_send(9)
• stratix10_svc_async_prepare_response(9)
• stratix10_svc_async_poll(9)
• stratix10_svc_async_done(9)
• stratix10_svc_async_init(9)
• stratix10_svc_async_exit(9)
• stratix10_svc_free_channel(9)
• stratix10_svc_send(9)
• stratix10_svc_done(9)
• stratix10_svc_allocate_memory(9)
• stratix10_svc_free_memory(9)

and that’s the page, bestie! source: ./drivers/firmware; date: October 2026; page/version: svc_smccc_hvc(9). mwah 💋✨