[linux-next:master 3136/3897] arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces)

[linux-next:master 3136/3897] arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   f30a24ed97b401416118756fa35fbe5d28f999e3
commit: 4ebbd075bcde7884e078d4360510b989f559bfec [3136/3897] KVM: PPC: Book3S HV P9: Use host timer accounting to avoid decrementer read
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20211127/202111271453.wK19HIRG-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=4ebbd075bcde7884e078d4360510b989f559bfec
        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 4ebbd075bcde7884e078d4360510b989f559bfec
        # save the config file to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/kernel/

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


sparse warnings: (new ones prefixed by >>)
   arch/powerpc/kernel/time.c:90:5: sparse: sparse: symbol 'decrementer_max' was not declared. Should it be static?
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:846:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:846:9: sparse:     got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:846:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:846:9: sparse:     got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:846:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:846:9: sparse:     got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:846:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:846:9: sparse:     got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:846:9: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:846:9: sparse:     got unsigned long long *
   arch/powerpc/kernel/time.c:516:1: sparse: sparse: symbol '__pcpu_scope_irq_work_pending' was not declared. Should it be static?
   arch/powerpc/kernel/time.c:626:24: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:626:24: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:626:24: sparse:     got unsigned long long *
   arch/powerpc/kernel/time.c:557:24: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned long long * @@
   arch/powerpc/kernel/time.c:557:24: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/powerpc/kernel/time.c:557:24: sparse:     got unsigned long long *

vim +846 arch/powerpc/kernel/time.c

4a4cfe3836916e Tony Breeds            2007-09-22  842  
d831d0b83f2058 Tony Breeds            2007-09-21  843  static int decrementer_set_next_event(unsigned long evt,
d831d0b83f2058 Tony Breeds            2007-09-21  844  				      struct clock_event_device *dev)
d831d0b83f2058 Tony Breeds            2007-09-21  845  {
6601ec1c2ba929 Christophe Leroy       2020-09-29 @846  	__this_cpu_write(decrementers_next_tb, get_tb() + evt);
d831d0b83f2058 Tony Breeds            2007-09-21  847  	set_dec(evt);
0215f7d8c53fb1 Benjamin Herrenschmidt 2014-01-14  848  
0215f7d8c53fb1 Benjamin Herrenschmidt 2014-01-14  849  	/* We may have raced with new irq work */
0215f7d8c53fb1 Benjamin Herrenschmidt 2014-01-14  850  	if (test_irq_work_pending())
0215f7d8c53fb1 Benjamin Herrenschmidt 2014-01-14  851  		set_dec(1);
0215f7d8c53fb1 Benjamin Herrenschmidt 2014-01-14  852  
d831d0b83f2058 Tony Breeds            2007-09-21  853  	return 0;
d831d0b83f2058 Tony Breeds            2007-09-21  854  }
d831d0b83f2058 Tony Breeds            2007-09-21  855  

:::::: The code at line 846 was first introduced by commit
:::::: 6601ec1c2ba929430f5585ce7f9d9960b0e0a01d powerpc: Remove get_tb_or_rtc()

:::::: TO: Christophe Leroy <christophe.leroy@csgroup.eu>
:::::: CC: Michael Ellerman <mpe@ellerman.id.au>

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