Hi Michael, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 73748627df83aab934c81332ca83a44ab8c7b3e3 commit: a736143afd036f2078fe19435b16fd55abc789a9 [11512/14055] Merge branch 'topic/ppc-kvm' into next config: powerpc-randconfig-r004-20210628 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project aad87328fabff9382bac0b452c83934515e6d0c8) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a736143afd036f2078fe19435b16fd55abc789a9 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout a736143afd036f2078fe19435b16fd55abc789a9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/powerpc/mm/book3s64/radix_tlb.c:418:20: error: unused function '_tlbie_pid_lpid' [-Werror,-Wunused-function] static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid, ^ >> arch/powerpc/mm/book3s64/radix_tlb.c:662:20: error: unused function '_tlbie_va_range_lpid' [-Werror,-Wunused-function] static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end, ^ 2 errors generated. vim +/_tlbie_pid_lpid +418 arch/powerpc/mm/book3s64/radix_tlb.c 1a472c9dba6b96 arch/powerpc/mm/tlb-radix.c Aneesh Kumar K.V 2016-04-29 417 f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 @418 static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid, f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 419 unsigned long ric) f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 420 { f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 421 asm volatile("ptesync" : : : "memory"); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 422 f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 423 /* f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 424 * Workaround the fact that the "ric" argument to __tlbie_pid f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 425 * must be a compile-time contraint to match the "i" constraint f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 426 * in the asm statement. f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 427 */ f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 428 switch (ric) { f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 429 case RIC_FLUSH_TLB: f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 430 __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_TLB); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 431 fixup_tlbie_pid_lpid(pid, lpid); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 432 break; f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 433 case RIC_FLUSH_PWC: f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 434 __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 435 break; f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 436 case RIC_FLUSH_ALL: f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 437 default: f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 438 __tlbie_pid_lpid(pid, lpid, RIC_FLUSH_ALL); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 439 fixup_tlbie_pid_lpid(pid, lpid); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 440 } f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 441 asm volatile("eieio; tlbsync; ptesync" : : : "memory"); f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao 2021-06-21 442 } 2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin 2019-09-03 443 struct tlbiel_pid { 2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin 2019-09-03 444 unsigned long pid; 2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin 2019-09-03 445 unsigned long ric; 2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin 2019-09-03 446 }; 2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin 2019-09-03 447 :::::: The code at line 418 was first introduced by commit :::::: f0c6fbbb90504fb7e9dbf0865463d3c2b4de49e5 KVM: PPC: Book3S HV: Add support for H_RPT_INVALIDATE :::::: TO: Bharata B Rao <bharata@xxxxxxxxxxxxx> :::::: CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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