linux-kernel - [mark-rutland:arm64/head/cleanup 13/14] arch/arm64/kernel/head.S:321: Error: too many positional arguments

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Date:   Sat, 7 Aug 2021 06:02:29 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [mark-rutland:arm64/head/cleanup 13/14]
 arch/arm64/kernel/head.S:321: Error: too many positional arguments

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/head/cleanup
head:   2fca07d7b5e0a0dc3fb5bdec5f470411d57a4551
commit: a0b6ee23fbe0b8bb87c01ff990c3a1e0c99e691b [13/14] arm64: head: refactor `create_table_entry`
config: arm64-randconfig-s032-20210806 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 10.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-348-gf0e6938b-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=a0b6ee23fbe0b8bb87c01ff990c3a1e0c99e691b
        git remote add mark-rutland https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark-rutland arm64/head/cleanup
        git checkout a0b6ee23fbe0b8bb87c01ff990c3a1e0c99e691b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash

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 >>):

   arch/arm64/kernel/head.S: Assembler messages:
>> arch/arm64/kernel/head.S:321: Error: too many positional arguments


vim +321 arch/arm64/kernel/head.S

   308	
   309		/*
   310		 * If VA_BITS < 48, we have to configure an additional table level.
   311		 * First, we have to verify our assumption that the current value of
   312		 * VA_BITS was chosen such that all translation levels are fully
   313		 * utilised, and that lowering T0SZ will always result in an additional
   314		 * translation level to be configured.
   315		 */
   316	#if VA_BITS != EXTRA_SHIFT
   317	#error "Mismatch between VA_BITS and page size/number of translation levels"
   318	#endif
   319		mov	x4, EXTRA_PTRS
   320		add	x1, x0, #PAGE_SIZE
 > 321		write_pte_offset x0, x1, PMD_TYPE_TABLE, x1, EXTRA_SHIFT, EXTRA_PTRS, x5, x6, x7
   322		add	x0, x0, #PAGE_SIZE
   323	#else
   324		/*
   325		 * If VA_BITS == 48, we don't have to configure an additional
   326		 * translation level, but the top-level table has more entries.
   327		 */
   328		mov	x4, #1 << (PHYS_MASK_SHIFT - PGDIR_SHIFT)
   329		str_l	x4, idmap_ptrs_per_pgd, x5
   330	#endif
   331	1:
   332		ldr_l	x4, idmap_ptrs_per_pgd
   333		adr_l	x6, __idmap_text_end		// __pa(__idmap_text_end)
   334		mov	x7, SWAPPER_MM_MMUFLAGS
   335	
   336		map_memory x0, x1, x3, x6, x7, x3, x4, x10, x11, x12, x13, x14
   337	
   338		/*
   339		 * Since the page tables have been populated with non-cacheable
   340		 * accesses (MMU disabled), invalidate those tables again to
   341		 * remove any speculatively loaded cache lines.
   342		 */
   343		dmb	sy
   344		adrp	x0, idmap_pg_dir
   345		adrp	x1, idmap_pg_end
   346		bl	dcache_inval_poc
   347	
   348		ret	x28
   349	SYM_FUNC_END(__create_idmap_tables)
   350	

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

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