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* arch/arm64/kvm/va_layout.c:286:6: warning: no previous prototype for function 'kvm_get_kimage_voffset'
@ 2021-08-15  3:20 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-08-15  3:20 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: clang-built-linux, kbuild-all, linux-kernel, Thomas Gleixner,
	Ingo Molnar

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ba31f97d43be41ca99ab72a6131d7c226306865f
commit: 63b3f96e1a989846a5a521d4fbef4bc86406929d kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT
date:   3 months ago
config: arm64-randconfig-r013-20210814 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 62df4df41c939205b2dc0a2a3bfb75b8c1ed74fa)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63b3f96e1a989846a5a521d4fbef4bc86406929d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 63b3f96e1a989846a5a521d4fbef4bc86406929d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/va_layout.c:188:6: warning: no previous prototype for function 'kvm_patch_vector_branch' [-Wmissing-prototypes]
   void kvm_patch_vector_branch(struct alt_instr *alt,
        ^
   arch/arm64/kvm/va_layout.c:188:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_patch_vector_branch(struct alt_instr *alt,
   ^
   static 
>> arch/arm64/kvm/va_layout.c:286:6: warning: no previous prototype for function 'kvm_get_kimage_voffset' [-Wmissing-prototypes]
   void kvm_get_kimage_voffset(struct alt_instr *alt,
        ^
   arch/arm64/kvm/va_layout.c:286:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_get_kimage_voffset(struct alt_instr *alt,
   ^
   static 
>> arch/arm64/kvm/va_layout.c:292:6: warning: no previous prototype for function 'kvm_compute_final_ctr_el0' [-Wmissing-prototypes]
   void kvm_compute_final_ctr_el0(struct alt_instr *alt,
        ^
   arch/arm64/kvm/va_layout.c:292:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_compute_final_ctr_el0(struct alt_instr *alt,
   ^
   static 
   3 warnings generated.
--
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:182:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_CP14_64]    = kvm_handle_cp14_64,
                                     ^~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:183:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_HVC32]      = handle_hvc,
                                     ^~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:184:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_SMC32]      = handle_smc,
                                     ^~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:185:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_HVC64]      = handle_hvc,
                                     ^~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:186:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_SMC64]      = handle_smc,
                                     ^~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:187:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_SYS64]      = kvm_handle_sys_reg,
                                     ^~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:188:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_SVE]        = handle_sve,
                                     ^~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:189:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_IABT_LOW]   = kvm_handle_guest_abort,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:190:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_DABT_LOW]   = kvm_handle_guest_abort,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:191:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_SOFTSTP_LOW]= kvm_handle_guest_debug,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:192:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_WATCHPT_LOW]= kvm_handle_guest_debug,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:193:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_BREAKPT_LOW]= kvm_handle_guest_debug,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:194:24: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_BKPT32]     = kvm_handle_guest_debug,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:195:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_BRK64]      = kvm_handle_guest_debug,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:196:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_FP_ASIMD]   = handle_no_fpsimd,
                                     ^~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:197:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [ESR_ELx_EC_PAC]        = kvm_handle_ptrauth,
                                     ^~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here
           [0 ... ESR_ELx_EC_MAX]  = kvm_handle_unknown_ec,
                                     ^~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kvm/handle_exit.c:295:24: warning: no previous prototype for function 'nvhe_hyp_panic_handler' [-Wmissing-prototypes]
   void __noreturn __cold nvhe_hyp_panic_handler(u64 esr, u64 spsr, u64 elr,
                          ^
   arch/arm64/kvm/handle_exit.c:295:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __noreturn __cold nvhe_hyp_panic_handler(u64 esr, u64 spsr, u64 elr,
   ^
   static 
   22 warnings generated.
--
>> arch/arm64/kvm/sys_regs.c:1564:13: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .reset = reset_pmcr, .reg = PMCR_EL0 },
                      ^~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1563:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMCR_EL0), .access = access_pmcr,
             ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1576:38: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .access = access_pmceid, .reset = NULL },
                                               ^~~~
   include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
   #define NULL ((void *)0)
                ^~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1575:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMCEID0_EL0),
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1578:38: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .access = access_pmceid, .reset = NULL },
                                               ^~~~
   include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
   #define NULL ((void *)0)
                ^~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1577:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMCEID1_EL0),
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1582:43: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .access = access_pmu_evtyper, .reset = NULL },
                                                    ^~~~
   include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
   #define NULL ((void *)0)
                ^~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1581:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMXEVTYPER_EL0),
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1584:42: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .access = access_pmu_evcntr, .reset = NULL },
                                                   ^~~~
   include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
   #define NULL ((void *)0)
                ^~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1583:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMXEVCNTR_EL0),
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1590:13: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .reset = reset_val, .reg = PMUSERENR_EL0, .val = 0 },
                      ^~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1589:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMUSERENR_EL0), .access = access_pmuserenr,
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1745:13: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
             .reset = reset_val, .reg = PMCCFILTR_EL0, .val = 0 },
                      ^~~~~~~~~
   arch/arm64/kvm/sys_regs.c:1744:4: note: previous initialization is here
           { PMU_SYS_REG(SYS_PMCCFILTR_EL0), .access = access_pmu_evtyper,
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/sys_regs.c:947:24: note: expanded from macro 'PMU_SYS_REG'
           SYS_DESC(r), .reset = reset_unknown, .visibility = pmu_visibility
                                 ^~~~~~~~~~~~~
   7 warnings generated.
--
>> arch/arm64/kvm/hyp/vhe/switch.c:215:17: warning: no previous prototype for function 'hyp_panic' [-Wmissing-prototypes]
   void __noreturn hyp_panic(void)
                   ^
   arch/arm64/kvm/hyp/vhe/switch.c:215:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __noreturn hyp_panic(void)
   ^
   static 
>> arch/arm64/kvm/hyp/vhe/switch.c:225:17: warning: no previous prototype for function 'kvm_unexpected_el2_exception' [-Wmissing-prototypes]
   asmlinkage void kvm_unexpected_el2_exception(void)
                   ^
   arch/arm64/kvm/hyp/vhe/switch.c:225:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage void kvm_unexpected_el2_exception(void)
              ^
              static 
   2 warnings generated.
--
>> arch/arm64/kvm/hyp/nvhe/switch.c:264:17: warning: no previous prototype for function 'hyp_panic' [-Wmissing-prototypes]
   void __noreturn hyp_panic(void)
                   ^
   arch/arm64/kvm/hyp/nvhe/switch.c:264:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __noreturn hyp_panic(void)
   ^
   static 
>> arch/arm64/kvm/hyp/nvhe/switch.c:286:17: warning: no previous prototype for function 'kvm_unexpected_el2_exception' [-Wmissing-prototypes]
   asmlinkage void kvm_unexpected_el2_exception(void)
                   ^
   arch/arm64/kvm/hyp/nvhe/switch.c:286:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage void kvm_unexpected_el2_exception(void)
              ^
              static 
   2 warnings generated.
--
>> arch/arm64/kvm/hyp/nvhe/hyp-main.c:233:6: warning: no previous prototype for function 'handle_trap' [-Wmissing-prototypes]
   void handle_trap(struct kvm_cpu_context *host_ctxt)
        ^
   arch/arm64/kvm/hyp/nvhe/hyp-main.c:233:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void handle_trap(struct kvm_cpu_context *host_ctxt)
   ^
   static 
   1 warning generated.
--
>> arch/arm64/kvm/hyp/nvhe/psci-relay.c:203:28: warning: no previous prototype for function 'kvm_host_psci_cpu_entry' [-Wmissing-prototypes]
   asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on)
                              ^
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:203:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on)
              ^
              static 
   1 warning generated.
--
>> arch/arm64/kvm/hyp/nvhe/setup.c:146:17: warning: no previous prototype for function '__pkvm_init_finalise' [-Wmissing-prototypes]
   void __noreturn __pkvm_init_finalise(void)
                   ^
   arch/arm64/kvm/hyp/nvhe/setup.c:146:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __noreturn __pkvm_init_finalise(void)
   ^
   static 
   1 warning generated.


vim +/kvm_get_kimage_voffset +286 arch/arm64/kvm/va_layout.c

1db9d9ded77138 Marc Zyngier 2020-10-21  285  
68b824e428c5fb Marc Zyngier 2020-10-24 @286  void kvm_get_kimage_voffset(struct alt_instr *alt,
68b824e428c5fb Marc Zyngier 2020-10-24  287  			    __le32 *origptr, __le32 *updptr, int nr_inst)
68b824e428c5fb Marc Zyngier 2020-10-24  288  {
68b824e428c5fb Marc Zyngier 2020-10-24  289  	generate_mov_q(kimage_voffset, origptr, updptr, nr_inst);
68b824e428c5fb Marc Zyngier 2020-10-24  290  }
755db23420a1ce Marc Zyngier 2021-03-22  291  
755db23420a1ce Marc Zyngier 2021-03-22 @292  void kvm_compute_final_ctr_el0(struct alt_instr *alt,

:::::: The code at line 286 was first introduced by commit
:::::: 68b824e428c5fb5c3dc5ef80b1543e767534b58e KVM: arm64: Patch kimage_voffset instead of loading the EL1 value

:::::: TO: Marc Zyngier <maz@kernel.org>
:::::: CC: Marc Zyngier <maz@kernel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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