Hi Yi-De, kernel test robot noticed the following build warnings: [auto build test WARNING on arm64/for-next/core] [also build test WARNING on robh/for-next arnd-asm-generic/master linus/master v6.3 next-20230428] [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/Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230428-183738 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20230428103622.18291-4-yi-de.wu%40mediatek.com patch subject: [PATCH v2 3/7] virt: geniezone: Introduce GenieZone hypervisor support config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230429/202304290334.fCw7PKYU-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/0e3f05a6e4547eb309032d047115a47d8f59641d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230428-183738 git checkout 0e3f05a6e4547eb309032d047115a47d8f59641d # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/geniezone/ drivers/virt/geniezone/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304290334.fCw7PKYU-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> arch/arm64/geniezone/gzvm_arch.c:112:5: warning: no previous prototype for 'gzvm_vm_arch_enable_cap' [-Wmissing-prototypes] 112 | int gzvm_vm_arch_enable_cap(struct gzvm *gzvm, struct gzvm_enable_cap *cap, | ^~~~~~~~~~~~~~~~~~~~~~~ -- arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a0' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a1' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a2' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a3' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a4' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a5' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a6' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'a7' not described in 'gzvm_hypcall_wrapper' arch/arm64/geniezone/gzvm_arch.c:24: warning: Function parameter or member 'res' not described in 'gzvm_hypcall_wrapper' >> arch/arm64/geniezone/gzvm_arch.c:24: warning: expecting prototype for geniezone_hypercall_wrapper(). Prototype was for gzvm_hypcall_wrapper() instead arch/arm64/geniezone/gzvm_arch.c:133: warning: Function parameter or member 'gzvm' not described in 'gzvm_vm_ioctl_get_pvmfw_size' arch/arm64/geniezone/gzvm_arch.c:133: warning: Function parameter or member 'cap' not described in 'gzvm_vm_ioctl_get_pvmfw_size' arch/arm64/geniezone/gzvm_arch.c:133: warning: Function parameter or member 'argp' not described in 'gzvm_vm_ioctl_get_pvmfw_size' arch/arm64/geniezone/gzvm_arch.c:155: warning: Function parameter or member 'gzvm' not described in 'gzvm_vm_ioctl_cap_pvm' arch/arm64/geniezone/gzvm_arch.c:155: warning: Function parameter or member 'cap' not described in 'gzvm_vm_ioctl_cap_pvm' arch/arm64/geniezone/gzvm_arch.c:155: warning: Function parameter or member 'argp' not described in 'gzvm_vm_ioctl_cap_pvm' vim +/gzvm_vm_arch_enable_cap +112 arch/arm64/geniezone/gzvm_arch.c 13 14 /** 15 * geniezone_hypercall_wrapper() 16 * 17 * Return: The wrapper helps caller to convert geniezone errno to Linux errno. 18 */ 19 static int gzvm_hypcall_wrapper(unsigned long a0, unsigned long a1, 20 unsigned long a2, unsigned long a3, 21 unsigned long a4, unsigned long a5, 22 unsigned long a6, unsigned long a7, 23 struct arm_smccc_res *res) > 24 { 25 arm_smccc_hvc(a0, a1, a2, a3, a4, a5, a6, a7, res); 26 return gz_err_to_errno(res->a0); 27 } 28 29 int gzvm_arch_probe(void) 30 { 31 struct arm_smccc_res res; 32 33 arm_smccc_hvc(MT_HVC_GZVM_PROBE, 0, 0, 0, 0, 0, 0, 0, &res); 34 if (res.a0 == 0) 35 return 0; 36 37 return -ENXIO; 38 } 39 40 int gzvm_arch_set_memregion(gzvm_id_t vm_id, size_t buf_size, 41 phys_addr_t region) 42 { 43 struct arm_smccc_res res; 44 45 return gzvm_hypcall_wrapper(MT_HVC_GZVM_SET_MEMREGION, vm_id, 46 buf_size, region, 0, 0, 0, 0, &res); 47 } 48 49 static int gzvm_cap_arm_vm_ipa_size(void __user *argp) 50 { 51 __u64 value = CONFIG_ARM64_PA_BITS; 52 53 if (copy_to_user(argp, &value, sizeof(__u64))) 54 return -EFAULT; 55 56 return 0; 57 } 58 59 int gzvm_arch_check_extension(struct gzvm *gzvm, __u64 cap, void __user *argp) 60 { 61 int ret = -EOPNOTSUPP; 62 63 switch (cap) { 64 case GZVM_CAP_ARM_PROTECTED_VM: { 65 __u64 success = 1; 66 67 if (copy_to_user(argp, &success, sizeof(__u64))) 68 return -EFAULT; 69 ret = 0; 70 break; 71 } 72 case GZVM_CAP_ARM_VM_IPA_SIZE: { 73 ret = gzvm_cap_arm_vm_ipa_size(argp); 74 break; 75 } 76 default: 77 ret = -EOPNOTSUPP; 78 } 79 80 return ret; 81 } 82 83 /** 84 * gzvm_arch_create_vm() 85 * 86 * Return: 87 * * positive value - VM ID 88 * * -ENOMEM - Memory not enough for storing VM data 89 */ 90 int gzvm_arch_create_vm(void) 91 { 92 struct arm_smccc_res res; 93 int ret; 94 95 ret = gzvm_hypcall_wrapper(MT_HVC_GZVM_CREATE_VM, 0, 0, 0, 0, 0, 0, 0, 96 &res); 97 98 if (ret == 0) 99 return res.a1; 100 else 101 return ret; 102 } 103 104 int gzvm_arch_destroy_vm(gzvm_id_t vm_id) 105 { 106 struct arm_smccc_res res; 107 108 return gzvm_hypcall_wrapper(MT_HVC_GZVM_DESTROY_VM, vm_id, 0, 0, 0, 0, 109 0, 0, &res); 110 } 111 > 112 int gzvm_vm_arch_enable_cap(struct gzvm *gzvm, struct gzvm_enable_cap *cap, 113 struct arm_smccc_res *res) 114 { 115 return gzvm_hypcall_wrapper(MT_HVC_GZVM_ENABLE_CAP, gzvm->vm_id, 116 cap->cap, cap->args[0], cap->args[1], 117 cap->args[2], cap->args[3], cap->args[4], 118 res); 119 } 120 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
