[luto:x86/mm 1/7] arch/x86/include/asm/mmu_context.h:95:46: error: 'cpu_tlbstate' undeclared

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/mm
head:   e69827244c2f1e534aa83a40334ffa00bafe54c2
commit: f11196dfb449b51be4cf583fa343b90e20f95d48 [1/7] x86/ldt: Refactor the LDT loading functions
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/commit/?id=f11196dfb449b51be4cf583fa343b90e20f95d48
        git remote add luto https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git
        git fetch --no-tags luto x86/mm
        git checkout f11196dfb449b51be4cf583fa343b90e20f95d48
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All error/warnings (new ones prefixed by >>):

   In file included from include/asm-generic/percpu.h:7,
                    from arch/x86/include/asm/percpu.h:390,
                    from arch/x86/include/asm/preempt.h:6,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:51,
                    from arch/x86/include/asm/mmu.h:5,
                    from arch/x86/include/asm/desc.h:7,
                    from arch/x86/include/asm/mmu_context.h:5,
                    from include/linux/mmu_context.h:5,
                    from drivers/gpu/drm/i915/gem/i915_gem_userptr.c:7:
   arch/x86/include/asm/mmu_context.h: In function 'load_ldt_if_present':
>> arch/x86/include/asm/mmu_context.h:95:46: error: 'cpu_tlbstate' undeclared (first use in this function)
      95 |  return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
         |                                              ^~~~~~~~~~~~
   include/linux/percpu-defs.h:318:9: note: in definition of macro '__pcpu_size_call_return'
     318 |  typeof(variable) pscr_ret__;     \
         |         ^~~~~~~~
   arch/x86/include/asm/mmu_context.h:95:32: note: in expansion of macro 'this_cpu_read'
      95 |  return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
         |                                ^~~~~~~~~~~~~
   arch/x86/include/asm/mmu_context.h:95:46: note: each undeclared identifier is reported only once for each function it appears in
      95 |  return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
         |                                              ^~~~~~~~~~~~
   include/linux/percpu-defs.h:318:9: note: in definition of macro '__pcpu_size_call_return'
     318 |  typeof(variable) pscr_ret__;     \
         |         ^~~~~~~~
   arch/x86/include/asm/mmu_context.h:95:32: note: in expansion of macro 'this_cpu_read'
      95 |  return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
         |                                ^~~~~~~~~~~~~
>> include/linux/percpu-defs.h:317:2: warning: passing argument 1 of 'load_mm_ldt_if_present' makes pointer from integer without a cast [-Wint-conversion]
     317 | ({         \
         | ~^~~~~~~~~~~
         |  |
         |  int
     318 |  typeof(variable) pscr_ret__;     \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     319 |  __verify_pcpu_ptr(&(variable));     \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     320 |  switch(sizeof(variable)) {     \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     321 |  case 1: pscr_ret__ = stem##1(variable); break;   \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     322 |  case 2: pscr_ret__ = stem##2(variable); break;   \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     323 |  case 4: pscr_ret__ = stem##4(variable); break;   \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     324 |  case 8: pscr_ret__ = stem##8(variable); break;   \
         |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     325 |  default:       \
         |  ~~~~~~~~~~~~~~~~
     326 |   __bad_size_call_parameter(); break;   \
         |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     327 |  }        \
         |  ~~~~~~~~~~
     328 |  pscr_ret__;       \
         |  ~~~~~~~~~~~~~~~~~~~
     329 | })
         | ~~
   include/linux/percpu-defs.h:507:29: note: in expansion of macro '__pcpu_size_call_return'
     507 | #define this_cpu_read(pcp)  __pcpu_size_call_return(this_cpu_read_, pcp)
         |                             ^~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/mmu_context.h:95:32: note: in expansion of macro 'this_cpu_read'
      95 |  return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
         |                                ^~~~~~~~~~~~~
   In file included from include/linux/mmu_context.h:5,
                    from drivers/gpu/drm/i915/gem/i915_gem_userptr.c:7:
   arch/x86/include/asm/mmu_context.h:83:61: note: expected 'struct mm_struct *' but argument is of type 'int'
      83 | static inline bool load_mm_ldt_if_present(struct mm_struct *mm)
         |                                           ~~~~~~~~~~~~~~~~~~^~


vim +/cpu_tlbstate +95 arch/x86/include/asm/mmu_context.h

    79	
    80	#ifdef CONFIG_MODIFY_LDT_SYSCALL
    81	extern void load_ldt_struct(struct ldt_struct *ldt);
    82	extern void switch_ldt(struct mm_struct *prev, struct mm_struct *next);
    83	static inline bool load_mm_ldt_if_present(struct mm_struct *mm)
    84	{
    85		struct ldt_struct *ldt = smp_load_acquire(&mm->context.ldt);
    86	
    87		if (likely(!ldt))
    88			return false;
    89	
    90		load_ldt_struct(ldt);
    91		return true;
    92	}
    93	static inline bool load_ldt_if_present(void)
    94	{
  > 95		return load_mm_ldt_if_present(this_cpu_read(cpu_tlbstate.loaded_mm));
    96	}
    97	#else
    98	static inline bool load_mm_ldt_if_present(struct mm_struct *mm) { return false; }
    99	static inline bool load_ldt_if_present(void) { return false; }
   100	static inline void switch_ldt(struct mm_struct *prev, struct mm_struct *next)
   101	{
   102		DEBUG_LOCKS_WARN_ON(preemptible());
   103	}
   104	#endif
   105	

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

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