linux-kernel - arch/x86/include/asm/processor.h:698:16: sparse: sparse: incorrect type in initializer (different address spaces)

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Date: Wed, 10 Jan 2024 04:00:52 +0800
From: kernel test robot <lkp@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: arch/x86/include/asm/processor.h:698:16: sparse: sparse: incorrect
 type in initializer (different address spaces)

Hi Thomas,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9f8413c4a66f2fb776d3dc3c9ed20bf435eb305e
commit: 6e29032340b60f7aa7475c8234b17273e4424007 x86/cpu: Move cpu_l[l2]c_id into topology info
date:   3 months ago
config: i386-randconfig-062-20240106 (https://download.01.org/0day-ci/archive/20240110/202401100305.QgT26dqt-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240110/202401100305.QgT26dqt-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401100305.QgT26dqt-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   arch/x86/events/amd/uncore.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:698:16: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got unsigned int * @@
   arch/x86/include/asm/processor.h:698:16: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/include/asm/processor.h:698:16: sparse:     got unsigned int *
   arch/x86/events/amd/uncore.c:599:29: sparse: sparse: self-comparison always evaluates to true

vim +698 arch/x86/include/asm/processor.h

   695	
   696	static inline u16 per_cpu_llc_id(unsigned int cpu)
   697	{
 > 698		return per_cpu(cpu_info.topo.llc_id, cpu);
   699	}
   700	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki