Hi Nuno, kernel test robot noticed the following build warnings: [auto build test WARNING on arnd-asm-generic/master] [also build test WARNING on tip/x86/core arm64/for-next/core linus/master v6.6 next-20231103] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Nuno-Das-Neves/hyperv-tlfs-Change-shared-HV_REGISTER_-defines-to-HV_MSR_/20230930-041305 base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master patch link: https://lore.kernel.org/r/1696010501-24584-16-git-send-email-nunodasneves%40linux.microsoft.com patch subject: [PATCH v4 15/15] Drivers: hv: Add modules to expose /dev/mshv to VMMs running on Hyper-V config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20231106/202311061139.Zrlkam3w-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231106/202311061139.Zrlkam3w-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202311061139.Zrlkam3w-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/hv/hv_call.c:21:5: warning: no previous prototype for 'hv_call_get_vp_registers' [-Wmissing-prototypes] 21 | int hv_call_get_vp_registers(u32 vp_index, u64 partition_id, u16 count, | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/hv_call.c:65:5: warning: no previous prototype for 'hv_call_set_vp_registers' [-Wmissing-prototypes] 65 | int hv_call_set_vp_registers(u32 vp_index, u64 partition_id, u16 count, | ^~~~~~~~~~~~~~~~~~~~~~~~ -- >> drivers/hv/mshv_root_main.c:1816:12: warning: no previous prototype for 'mshv_root_init' [-Wmissing-prototypes] 1816 | int __init mshv_root_init(void) | ^~~~~~~~~~~~~~ >> drivers/hv/mshv_root_main.c:1896:13: warning: no previous prototype for 'mshv_root_exit' [-Wmissing-prototypes] 1896 | void __exit mshv_root_exit(void) | ^~~~~~~~~~~~~~ -- >> drivers/hv/mshv_synic.c:27:1: warning: no previous prototype for 'synic_event_ring_get_queued_port' [-Wmissing-prototypes] 27 | synic_event_ring_get_queued_port(u32 sint_index) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- >> drivers/hv/mshv_root_hv_call.c:46:5: warning: no previous prototype for 'hv_call_withdraw_memory' [-Wmissing-prototypes] 46 | int hv_call_withdraw_memory(u64 count, int node, u64 partition_id) | ^~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:94:5: warning: no previous prototype for 'hv_call_create_partition' [-Wmissing-prototypes] 94 | int hv_call_create_partition(u64 flags, | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:139:5: warning: no previous prototype for 'hv_call_initialize_partition' [-Wmissing-prototypes] 139 | int hv_call_initialize_partition(u64 partition_id) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:166:5: warning: no previous prototype for 'hv_call_finalize_partition' [-Wmissing-prototypes] 166 | int hv_call_finalize_partition(u64 partition_id) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:177:5: warning: no previous prototype for 'hv_call_delete_partition' [-Wmissing-prototypes] 177 | int hv_call_delete_partition(u64 partition_id) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:188:5: warning: no previous prototype for 'hv_call_map_gpa_pages' [-Wmissing-prototypes] 188 | int hv_call_map_gpa_pages(u64 partition_id, u64 gpa_target, u64 page_count, | ^~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:241:5: warning: no previous prototype for 'hv_call_unmap_gpa_pages' [-Wmissing-prototypes] 241 | int hv_call_unmap_gpa_pages(u64 partition_id, u64 gpa_target, u64 page_count, | ^~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:277:5: warning: no previous prototype for 'hv_call_get_gpa_access_states' [-Wmissing-prototypes] 277 | int hv_call_get_gpa_access_states(u64 partition_id, u32 count, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:320:5: warning: no previous prototype for 'hv_call_install_intercept' [-Wmissing-prototypes] 320 | int hv_call_install_intercept(u64 partition_id, u32 access_type, | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:350:5: warning: no previous prototype for 'hv_call_assert_virtual_interrupt' [-Wmissing-prototypes] 350 | int hv_call_assert_virtual_interrupt(u64 partition_id, u32 vector, u64 dest_addr, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:372:5: warning: no previous prototype for 'hv_call_get_vp_state' [-Wmissing-prototypes] 372 | int hv_call_get_vp_state(u32 vp_index, u64 partition_id, | ^~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:429:5: warning: no previous prototype for 'hv_call_set_vp_state' [-Wmissing-prototypes] 429 | int hv_call_set_vp_state(u32 vp_index, u64 partition_id, | ^~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:494:5: warning: no previous prototype for 'hv_call_map_vp_state_page' [-Wmissing-prototypes] 494 | int hv_call_map_vp_state_page(u64 partition_id, u32 vp_index, u32 type, | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:531:5: warning: no previous prototype for 'hv_call_unmap_vp_state_page' [-Wmissing-prototypes] 531 | int hv_call_unmap_vp_state_page(u64 partition_id, u32 vp_index, u32 type) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:554:5: warning: no previous prototype for 'hv_call_get_partition_property' [-Wmissing-prototypes] 554 | int hv_call_get_partition_property(u64 partition_id, u64 property_code, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:581:5: warning: no previous prototype for 'hv_call_set_partition_property' [-Wmissing-prototypes] 581 | int hv_call_set_partition_property(u64 partition_id, u64 property_code, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:609:5: warning: no previous prototype for 'hv_call_translate_virtual_address' [-Wmissing-prototypes] 609 | int hv_call_translate_virtual_address(u32 vp_index, u64 partition_id, u64 flags, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:648:1: warning: no previous prototype for 'hv_call_clear_virtual_interrupt' [-Wmissing-prototypes] 648 | hv_call_clear_virtual_interrupt(u64 partition_id) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:662:1: warning: no previous prototype for 'hv_call_create_port' [-Wmissing-prototypes] 662 | hv_call_create_port(u64 port_partition_id, union hv_port_id port_id, | ^~~~~~~~~~~~~~~~~~~ >> drivers/hv/mshv_root_hv_call.c:703:1: warning: no previous prototype for 'hv_call_delete_port' [-Wmissing-prototypes] 703 | hv_call_delete_port(u64 port_partition_id, union hv_port_id port_id) | ^~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:721:1: warning: no previous prototype for 'hv_call_connect_port' [-Wmissing-prototypes] 721 | hv_call_connect_port(u64 port_partition_id, union hv_port_id port_id, | ^~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:761:1: warning: no previous prototype for 'hv_call_disconnect_port' [-Wmissing-prototypes] 761 | hv_call_disconnect_port(u64 connection_partition_id, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:781:1: warning: no previous prototype for 'hv_call_notify_port_ring_empty' [-Wmissing-prototypes] 781 | hv_call_notify_port_ring_empty(u32 sint_index) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:798:5: warning: no previous prototype for 'hv_call_register_intercept_result' [-Wmissing-prototypes] 798 | int hv_call_register_intercept_result(u32 vp_index, u64 partition_id, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:834:5: warning: no previous prototype for 'hv_call_signal_event_direct' [-Wmissing-prototypes] 834 | int hv_call_signal_event_direct(u32 vp_index, u64 partition_id, u8 vtl, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:861:5: warning: no previous prototype for 'hv_call_post_message_direct' [-Wmissing-prototypes] 861 | int hv_call_post_message_direct(u32 vp_index, u64 partition_id, u8 vtl, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/mshv_root_hv_call.c:883:5: warning: no previous prototype for 'hv_call_get_vp_cpuid_values' [-Wmissing-prototypes] 883 | int hv_call_get_vp_cpuid_values(u32 vp_index, u64 partition_id, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ -- >> drivers/hv/xfer_to_guest.c:15:5: warning: no previous prototype for 'mshv_xfer_to_guest_mode_handle_work' [-Wmissing-prototypes] 15 | int mshv_xfer_to_guest_mode_handle_work(unsigned long ti_work) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/hv_call_get_vp_registers +21 drivers/hv/hv_call.c 14 15 #define HV_GET_REGISTER_BATCH_SIZE \ 16 (HV_HYP_PAGE_SIZE / sizeof(union hv_register_value)) 17 #define HV_SET_REGISTER_BATCH_SIZE \ 18 ((HV_HYP_PAGE_SIZE - sizeof(struct hv_input_set_vp_registers)) \ 19 / sizeof(struct hv_register_assoc)) 20 > 21 int hv_call_get_vp_registers(u32 vp_index, u64 partition_id, u16 count, 22 union hv_input_vtl input_vtl, 23 struct hv_register_assoc *registers) 24 { 25 struct hv_input_get_vp_registers *input_page; 26 union hv_register_value *output_page; 27 u16 completed = 0; 28 unsigned long remaining = count; 29 int rep_count, i; 30 u64 status = HV_STATUS_SUCCESS; 31 unsigned long flags; 32 33 local_irq_save(flags); 34 35 input_page = *this_cpu_ptr(hyperv_pcpu_input_arg); 36 output_page = *this_cpu_ptr(hyperv_pcpu_output_arg); 37 38 input_page->partition_id = partition_id; 39 input_page->vp_index = vp_index; 40 input_page->input_vtl.as_uint8 = input_vtl.as_uint8; 41 input_page->rsvd_z8 = 0; 42 input_page->rsvd_z16 = 0; 43 44 while (remaining) { 45 rep_count = min(remaining, HV_GET_REGISTER_BATCH_SIZE); 46 for (i = 0; i < rep_count; ++i) 47 input_page->names[i] = registers[i].name; 48 49 status = hv_do_rep_hypercall(HVCALL_GET_VP_REGISTERS, rep_count, 50 0, input_page, output_page); 51 if (!hv_result_success(status)) 52 break; 53 completed = hv_repcomp(status); 54 for (i = 0; i < completed; ++i) 55 registers[i].value = output_page[i]; 56 57 registers += completed; 58 remaining -= completed; 59 } 60 local_irq_restore(flags); 61 62 return hv_status_to_errno(status); 63 } 64 > 65 int hv_call_set_vp_registers(u32 vp_index, u64 partition_id, u16 count, 66 union hv_input_vtl input_vtl, 67 struct hv_register_assoc *registers) 68 { 69 struct hv_input_set_vp_registers *input_page; 70 u16 completed = 0; 71 unsigned long remaining = count; 72 int rep_count; 73 u64 status = HV_STATUS_SUCCESS; 74 unsigned long flags; 75 76 local_irq_save(flags); 77 input_page = *this_cpu_ptr(hyperv_pcpu_input_arg); 78 79 input_page->partition_id = partition_id; 80 input_page->vp_index = vp_index; 81 input_page->input_vtl.as_uint8 = input_vtl.as_uint8; 82 input_page->rsvd_z8 = 0; 83 input_page->rsvd_z16 = 0; 84 85 while (remaining) { 86 rep_count = min(remaining, HV_SET_REGISTER_BATCH_SIZE); 87 memcpy(input_page->elements, registers, 88 sizeof(struct hv_register_assoc) * rep_count); 89 90 status = hv_do_rep_hypercall(HVCALL_SET_VP_REGISTERS, rep_count, 91 0, input_page, NULL); 92 if (!hv_result_success(status)) 93 break; 94 completed = hv_repcomp(status); 95 registers += completed; 96 remaining -= completed; 97 } 98 99 local_irq_restore(flags); 100 101 return hv_status_to_errno(status); 102 } 103 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
