Re: [PATCH v5] ACPI: processor: Fix evaluating _PDC method when running as Xen dom0

[kernel test robot <lkp@xxxxxxxxx>]

Hi Roger,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on xen-tip/linux-next]
[also build test ERROR on rafael-pm/linux-next linus/master v6.3-rc3 
next-20230321]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    
https://github.com/intel-lab-lkp/linux/commits/Roger-Pau-Monne/ACPI-processor-Fix-evaluating-_PDC-method-when-running-as-Xen-dom0/20230321-221950
base:   https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git linux-next
patch link:    
https://lore.kernel.org/r/20230321141904.49177-1-roger.pau%40citrix.com
patch subject: [PATCH v5] ACPI: processor: Fix evaluating _PDC method when 
running as Xen dom0
config: arm64-randconfig-r013-20230319 
(https://download.01.org/0day-ci/archive/20230322/202303221107.hgKqaZl0-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 
67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # 
https://github.com/intel-lab-lkp/linux/commit/4232c8b37a0415e1e828fef4ce522c93a0b925fc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review 
Roger-Pau-Monne/ACPI-processor-Fix-evaluating-_PDC-method-when-running-as-Xen-dom0/20230321-221950
        git checkout 4232c8b37a0415e1e828fef4ce522c93a0b925fc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 
O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 
O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: 
https://lore.kernel.org/oe-kbuild-all/202303221107.hgKqaZl0-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:2:
>> include/xen/xen.h:79:2: error: call to undeclared function 'BUG'; ISO C99 
>> and later do not support implicit function declarations 
>> [-Wimplicit-function-declaration]
           BUG();
           ^
   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:4:
   In file included from include/xen/grant_table.h:48:
   In file included from include/xen/page.h:28:
   In file included from arch/arm64/include/asm/xen/page.h:1:
   In file included from include/xen/arm/page.h:9:
   In file included from include/linux/dma-mapping.h:7:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/arm64/include/asm/elf.h:141:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:97:11: warning: array index 3 is past the end of the 
array (that has type 'unsigned long[1]') [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                           ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:4:
   In file included from include/xen/grant_table.h:48:
   In file included from include/xen/page.h:28:
   In file included from arch/arm64/include/asm/xen/page.h:1:
   In file included from include/xen/arm/page.h:9:
   In file included from include/linux/dma-mapping.h:7:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/arm64/include/asm/elf.h:141:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:97:25: warning: array index 2 is past the end of the 
array (that has type 'unsigned long[1]') [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                                         ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:4:
   In file included from include/xen/grant_table.h:48:
   In file included from include/xen/page.h:28:
   In file included from arch/arm64/include/asm/xen/page.h:1:
   In file included from include/xen/arm/page.h:9:
   In file included from include/linux/dma-mapping.h:7:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/arm64/include/asm/elf.h:141:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:4: warning: array index 1 is past the end of the 
array (that has type 'unsigned long[1]') [-Warray-bounds]
                           set->sig[1] | set->sig[0]) == 0;
                           ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:4:
   In file included from include/xen/grant_table.h:48:
   In file included from include/xen/page.h:28:
   In file included from arch/arm64/include/asm/xen/page.h:1:
   In file included from include/xen/arm/page.h:9:
   In file included from include/linux/dma-mapping.h:7:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/arm64/include/asm/elf.h:141:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:100:11: warning: array index 1 is past the end of the 
array (that has type 'unsigned long[1]') [-Warray-bounds]
                   return (set->sig[1] | set->sig[0]) == 0;
                           ^        ~
   include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/arm64/xen/../../arm/xen/enlighten.c:4:
   In file included from include/xen/grant_table.h:48:
   In file included from include/xen/page.h:28:
   In file included from arch/arm64/include/asm/xen/page.h:1:
   In file included from include/xen/arm/page.h:9:
   In file included from include/linux/dma-mapping.h:7:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/arm64/include/asm/elf.h:141:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:


vim +/BUG +79 include/xen/xen.h

    73  
    74  #if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && 
defined(CONFIG_X86)
    75  bool __init xen_processor_present(uint32_t acpi_id);
    76  #else
    77  static inline bool xen_processor_present(uint32_t acpi_id)
    78  {
  > 79          BUG();
    80          return false;
    81  }
    82  #endif
    83  

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