tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3e029760e6f8ce90c122c267a039ae73b3f1f5a4 commit: 366e9aec4a22d77b869f1b7641a74fdd96f02b4c [5596/5886] mm/early_ioremap: add prototype for early_memremap_pgprot_adjust config: x86_64-randconfig-a006-20210530 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project bc6799f2f79f0ae87e9f1ebf9d25ba799fbd25a9) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=366e9aec4a22d77b869f1b7641a74fdd96f02b4c git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 366e9aec4a22d77b869f1b7641a74fdd96f02b4c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/udl/udl_modeset.c:12: In file included from include/linux/dma-buf.h:16: In file included from include/linux/dma-buf-map.h:9: In file included from include/linux/io.h:13: In file included from arch/x86/include/asm/io.h:44: In file included from ./arch/x86/include/generated/asm/early_ioremap.h:1: In file included from include/asm-generic/early_ioremap.h:6: >> arch/x86/include/asm/fixmap.h:103:48: error: use of undeclared identifier 'NR_CPUS' FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1, ^ 1 error generated. vim +/NR_CPUS +103 arch/x86/include/asm/fixmap.h c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 61 c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 62 /* c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 63 * Here we define all the compile-time 'special' virtual c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 64 * addresses. The point is to have a constant address at c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 65 * compile time, but to set the physical address only c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 66 * in the boot process. c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 67 * for x86_32: We allocate these special addresses c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 68 * from the end of virtual memory (0xfffff000) backwards. c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 69 * Also this lets us do fail-safe vmalloc(), we c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 70 * can guarantee that these special addresses and c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 71 * vmalloc()-ed addresses never overlap. c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 72 * c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 73 * These 'compile-time allocated' memory buffers are c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 74 * fixed-size 4k pages (or larger if used with an increment c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 75 * higher than 1). Use set_fixmap(idx,phys) to associate c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 76 * physical memory with fixmap indices. c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 77 * c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 78 * TLB entries of such buffers will not be flushed across c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 79 * task switches. c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 80 */ c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 81 enum fixed_addresses { 96a388de5dc53a include/asm-x86/fixmap.h Thomas Gleixner 2007-10-11 82 #ifdef CONFIG_X86_32 c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 83 FIX_HOLE, 96a388de5dc53a include/asm-x86/fixmap.h Thomas Gleixner 2007-10-11 84 #else 1ad83c858c7d4e arch/x86/include/asm/fixmap.h Andy Lutomirski 2014-10-29 85 #ifdef CONFIG_X86_VSYSCALL_EMULATION f40c330091c7aa arch/x86/include/asm/fixmap.h Andy Lutomirski 2014-05-05 86 VSYSCALL_PAGE = (FIXADDR_TOP - VSYSCALL_ADDR) >> PAGE_SHIFT, 1ad83c858c7d4e arch/x86/include/asm/fixmap.h Andy Lutomirski 2014-10-29 87 #endif c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 88 #endif c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 89 FIX_DBGP_BASE, c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 90 FIX_EARLYCON_MEM_BASE, ff30a0543e9a6c arch/x86/include/asm/fixmap.h Jan Beulich 2010-03-15 91 #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT ff30a0543e9a6c arch/x86/include/asm/fixmap.h Jan Beulich 2010-03-15 92 FIX_OHCI1394_BASE, ff30a0543e9a6c arch/x86/include/asm/fixmap.h Jan Beulich 2010-03-15 93 #endif c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 94 #ifdef CONFIG_X86_LOCAL_APIC c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 95 FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */ c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 96 #endif c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 97 #ifdef CONFIG_X86_IO_APIC c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 98 FIX_IO_APIC_BASE_0, c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 99 FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1, c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 100 #endif 14df3267029158 arch/x86/include/asm/fixmap.h Thomas Gleixner 2020-11-18 101 #ifdef CONFIG_KMAP_LOCAL c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 102 FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */ 157e118b55113d arch/x86/include/asm/fixmap.h Thomas Gleixner 2020-11-03 @103 FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_MAX_IDX * NR_CPUS) - 1, c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 104 #ifdef CONFIG_PCI_MMCONFIG c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 105 FIX_PCIE_MCFG, 96a388de5dc53a include/asm-x86/fixmap.h Thomas Gleixner 2007-10-11 106 #endif c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 107 #endif ecac71816a1829 arch/x86/include/asm/fixmap.h Juergen Gross 2020-08-15 108 #ifdef CONFIG_PARAVIRT_XXL c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 109 FIX_PARAVIRT_BOOTMAP, c577b098f9bf46 arch/x86/include/asm/fixmap.h Gustavo Padovan 2009-02-15 110 #endif 69218e47994da6 arch/x86/include/asm/fixmap.h Thomas Garnier 2017-03-14 111 :::::: The code at line 103 was first introduced by commit :::::: 157e118b55113d1e6c7f8ddfcec0a1dbf3a69511 x86/mm/highmem: Use generic kmap atomic implementation :::::: TO: Thomas Gleixner <tglx@xxxxxxxxxxxxx> :::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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