linux-kernel - [arm-integrator:kernel-in-vmalloc-v5.17-rc1 6/8] arch/arm/include/asm/memory.h:332:5: error: use of undeclared identifier 'KERNEL_PFN

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Date:   Fri, 11 Mar 2022 21:01:30 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [arm-integrator:kernel-in-vmalloc-v5.17-rc1 6/8]
 arch/arm/include/asm/memory.h:332:5: error: use of undeclared identifier
 'KERNEL_PFN_OFFSET'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.17-rc1
head:   66e9038ef48dc66c07b12443b73e2d1f3f12cbab
commit: 5976b9fa0b76bace6d7b038a7e1941175da8f5c5 [6/8] ARM: Compile the kernel into VMALLOC
config: arm-randconfig-r032-20220310 (https://download.01.org/0day-ci/archive/20220311/202203112027.GAmJRxFY-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=5976b9fa0b76bace6d7b038a7e1941175da8f5c5
        git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git
        git fetch --no-tags arm-integrator kernel-in-vmalloc-v5.17-rc1
        git checkout 5976b9fa0b76bace6d7b038a7e1941175da8f5c5
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm prepare

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

All errors (new ones prefixed by >>):

   In file included from arch/arm/kernel/asm-offsets.c:11:
   In file included from include/linux/sched.h:12:
   In file included from arch/arm/include/asm/current.h:50:
   In file included from include/asm-generic/current.h:5:
   In file included from include/linux/thread_info.h:60:
   In file included from arch/arm/include/asm/thread_info.h:14:
   In file included from arch/arm/include/asm/page.h:160:
>> arch/arm/include/asm/memory.h:332:5: error: use of undeclared identifier 'KERNEL_PFN_OFFSET'
                                   KERNEL_PFN_OFFSET);
                                   ^
   1 error generated.
   make[2]: *** [scripts/Makefile.build:121: arch/arm/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1191: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/KERNEL_PFN_OFFSET +332 arch/arm/include/asm/memory.h

   322	
   323	static inline unsigned long virt_to_pfn(unsigned long kaddr)
   324	{
   325		if (!IS_ENABLED(CONFIG_ARM_KERNEL_IN_VMALLOC)) {
   326			return (((kaddr - PAGE_OFFSET) >> PAGE_SHIFT) +
   327				PHYS_PFN_OFFSET);
   328		} else {
   329			if ((kaddr >= KERNEL_OFFSET) &&
   330			    (kaddr < (KERNEL_OFFSET + KERNEL_SECTION_SIZE))) {
   331				return (((kaddr - KERNEL_OFFSET) >> PAGE_SHIFT) +
 > 332					KERNEL_PFN_OFFSET);
   333			} else {
   334				return (((kaddr - PAGE_OFFSET) >> PAGE_SHIFT) +
   335					PHYS_PFN_OFFSET);
   336			}
   337		}
   338	}
   339	

---
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