Re: [PATCH] drm/amdgpu: Remove UML build exclusion from Kconfig

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

Hi Alex,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v7.1-rc3 next-20260508]
[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/Alex-Hung/drm-amdgpu-Remove-UML-build-exclusion-from-Kconfig/20260513-150500
base:   https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
patch link:    https://lore.kernel.org/r/20260505162018.1755740-1-alex.hung%40amd.com
patch subject: [PATCH] drm/amdgpu: Remove UML build exclusion from Kconfig
config: um-allmodconfig (https://download.01.org/0day-ci/archive/20260514/202605140801.Fqury68H-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260514/202605140801.Fqury68H-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/202605140801.Fqury68H-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:26:
   In file included from include/linux/pci.h:38:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/um/include/asm/hardirq.h:24:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:12:
   In file included from arch/um/include/asm/io.h:24:
   include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    1209 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
         |                                                   ~~~~~~~~~~ ^
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:2353:9: error: call to undeclared function 'cpu_data'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2353 |         return cpu_data(first_cpu_of_numa_node).topo.apicid;
         |                ^
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:2353:41: error: member reference base type 'int' is not a structure or union
    2353 |         return cpu_data(first_cpu_of_numa_node).topo.apicid;
         |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
   1 warning and 2 errors generated.
--
   In file included from drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:24:
   In file included from include/linux/pci.h:38:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/um/include/asm/hardirq.h:24:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:12:
   In file included from arch/um/include/asm/io.h:24:
   include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    1209 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
         |                                                   ~~~~~~~~~~ ^
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1830:27: error: call to undeclared function 'cpu_data'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1830 |         struct cpuinfo_x86 *c = &cpu_data(0);
         |                                  ^
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1830:26: error: cannot take the address of an rvalue of type 'int'
    1830 |         struct cpuinfo_x86 *c = &cpu_data(0);
         |                                 ^~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1833:7: error: incomplete definition of type 'struct cpuinfo_x86'
    1833 |         if (c->x86_vendor == X86_VENDOR_AMD)
         |             ~^
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1830:9: note: forward declaration of 'struct cpuinfo_x86'
    1830 |         struct cpuinfo_x86 *c = &cpu_data(0);
         |                ^
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1833:23: error: use of undeclared identifier 'X86_VENDOR_AMD'
    1833 |         if (c->x86_vendor == X86_VENDOR_AMD)
         |                              ^
   1 warning and 4 errors generated.


vim +/cpu_data +2353 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c

851a645efd0fee Felix Kuehling  2017-11-27  2342  
520b8fb755ccfb Felix Kuehling  2017-12-08  2343  static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
520b8fb755ccfb Felix Kuehling  2017-12-08  2344  {
520b8fb755ccfb Felix Kuehling  2017-12-08  2345  	int first_cpu_of_numa_node;
520b8fb755ccfb Felix Kuehling  2017-12-08  2346  
520b8fb755ccfb Felix Kuehling  2017-12-08  2347  	if (!cpumask || cpumask == cpu_none_mask)
520b8fb755ccfb Felix Kuehling  2017-12-08  2348  		return -1;
520b8fb755ccfb Felix Kuehling  2017-12-08  2349  	first_cpu_of_numa_node = cpumask_first(cpumask);
520b8fb755ccfb Felix Kuehling  2017-12-08  2350  	if (first_cpu_of_numa_node >= nr_cpu_ids)
520b8fb755ccfb Felix Kuehling  2017-12-08  2351  		return -1;
df1dd4f4a7271e Felix Kuehling  2019-01-02  2352  #ifdef CONFIG_X86_64
b9655e702dc5d8 Thomas Gleixner 2023-08-14 @2353  	return cpu_data(first_cpu_of_numa_node).topo.apicid;
df1dd4f4a7271e Felix Kuehling  2019-01-02  2354  #else
df1dd4f4a7271e Felix Kuehling  2019-01-02  2355  	return first_cpu_of_numa_node;
df1dd4f4a7271e Felix Kuehling  2019-01-02  2356  #endif
520b8fb755ccfb Felix Kuehling  2017-12-08  2357  }
520b8fb755ccfb Felix Kuehling  2017-12-08  2358  

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