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

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Date: Sat, 2 Mar 2024 20:53:48 +0800
From: Yujie Liu <yujie.liu@...el.com>
To: kernel test robot <lkp@...el.com>
CC: Thomas Gleixner <tglx@...utronix.de>, <oe-kbuild-all@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: arch/x86/include/asm/processor.h:698:16: sparse: sparse:
 incorrect type in initializer (different address spaces)

On Sat, Mar 02, 2024 at 04:12:16AM +0800, kernel test robot wrote:
> 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:   87adedeba51a822533649b143232418b9e26d08b
> commit: 6e29032340b60f7aa7475c8234b17273e4424007 x86/cpu: Move cpu_l[l2]c_id into topology info
> date:   5 months ago
> config: i386-randconfig-062-20240301 (https://download.01.org/0day-ci/archive/20240302/202403020457.RCJoQ3ts-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/20240302/202403020457.RCJoQ3ts-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/202403020457.RCJoQ3ts-lkp@intel.com/
> 
> sparse warnings: (new ones prefixed by >>)

Sorry for the empty warning here. The actual sparse warning is:

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

> 
> 
> 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
>