arch/powerpc/mm/book3s64/radix_tlb.c:418:20: error: unused function '_tlbie_pid_lpid'
From: kernel test robot
Date: Sat Jun 04 2022 - 14:01:22 EST
Hi Michael,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 032dcf09e2bf7c822be25b4abef7a6c913870d98
commit: a736143afd036f2078fe19435b16fd55abc789a9 Merge branch 'topic/ppc-kvm' into next
date: 12 months ago
config: powerpc64-buildonly-randconfig-r006-20220604 (https://download.01.org/0day-ci/archive/20220605/202206050116.iF1fFubY-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0a90b72c432d70aae035727ece4ba80ce820f381)
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 powerpc64 cross compiling tool for clang build
# apt-get install binutils-powerpc64le-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a736143afd036f2078fe19435b16fd55abc789a9
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout a736143afd036f2078fe19435b16fd55abc789a9
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/mm/book3s64/
If you fix the issue, kindly add following tag where applicable
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>
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https://01.org/lkp