[linux-next:master 12386/12880] arch/x86/xen/multicalls.c:59:10: sparse: sparse: incorrect type in initializer (different address spaces)

[linux-next:master 12386/12880] arch/x86/xen/multicalls.c:59:10: 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:   3fe121b622825ff8cc995a1e6b026181c48188db
commit: 942d917cb92af2277db9e3be0d62345d770d5996 [12386/12880] xen: make multicall debug boot time selectable
config: x86_64-randconfig-123-20240715 (https://download.01.org/0day-ci/archive/20240715/202407151106.5s7Mnfpz-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240715/202407151106.5s7Mnfpz-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407151106.5s7Mnfpz-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/x86/xen/multicalls.c:59:10: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct mc_debug_data [noderef] __percpu *static [toplevel] mc_debug_data @@     got struct mc_debug_data * @@
   arch/x86/xen/multicalls.c:59:10: sparse:     expected struct mc_debug_data [noderef] __percpu *static [toplevel] mc_debug_data
   arch/x86/xen/multicalls.c:59:10: sparse:     got struct mc_debug_data *
   arch/x86/xen/multicalls.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
   include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false
   include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false

vim +59 arch/x86/xen/multicalls.c

    55	
    56	static DEFINE_PER_CPU(struct mc_buffer, mc_buffer);
    57	static struct mc_debug_data mc_debug_data_early __initdata;
    58	static struct mc_debug_data __percpu *mc_debug_data __refdata =
  > 59		&mc_debug_data_early;
    60	DEFINE_PER_CPU(unsigned long, xen_mc_irq_flags);
    61	

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