arch/arm64/kvm/hyp/vhe/switch.c:217:17: warning: no previous prototype for function 'hyp_panic'

kernel test robot
2022-03-10T18:48:27Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 1db333d9a51f3459fba1bcaa564d95befe79f0b3
commit: f79e616f27ab6cd74deb0995a8eead3d1c9d65af KVM: arm64: Use BUG and BUG_ON in nVHE hyp
date: 11 months ago
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220311/202203110233.wRMZYmRL-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f79e616f27ab6cd74deb0995a8eead3d1c9d65af
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout f79e616f27ab6cd74deb0995a8eead3d1c9d65af
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/ arch/arm64/kvm/ drivers/gpu/drm/tegra/ drivers/usb/host/ kernel/debug/kdb/

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/hyp/vhe/switch.c:217:17: warning: no previous prototype for function 'hyp_panic' [-Wmissing-prototypes]
void __noreturn hyp_panic(void)
^
arch/arm64/kvm/hyp/vhe/switch.c:217:1: 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:227:17: 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:227:12: 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.

vim +/hyp_panic +217 arch/arm64/kvm/hyp/vhe/switch.c

09cf57eba30424 David Brazdil 2020-06-25 216
6a0259ed29bba8 Andrew Scull 2020-09-15 @217 void __noreturn hyp_panic(void)
09cf57eba30424 David Brazdil 2020-06-25 218 {
09cf57eba30424 David Brazdil 2020-06-25 219 u64 spsr = read_sysreg_el2(SYS_SPSR);
09cf57eba30424 David Brazdil 2020-06-25 220 u64 elr = read_sysreg_el2(SYS_ELR);
96d389ca10110d Rob Herring 2020-10-28 221 u64 par = read_sysreg_par();
09cf57eba30424 David Brazdil 2020-06-25 222
6a0259ed29bba8 Andrew Scull 2020-09-15 223 __hyp_call_panic(spsr, elr, par);
09cf57eba30424 David Brazdil 2020-06-25 224 unreachable();
09cf57eba30424 David Brazdil 2020-06-25 225 }
e9ee186bb735bf James Morse 2020-08-21 226

:::::: The code at line 217 was first introduced by commit
:::::: 6a0259ed29bba83653a36fabcdf6b06aecd78596 KVM: arm64: Remove hyp_panic arguments

:::::: TO: Andrew Scull <ascull@google.com>
:::::: CC: Marc Zyngier <maz@kernel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation