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SubjectRe: [PATCH 4/4] mm: vmalloc: convert vread() to vread_iter()
Hi Lorenzo,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.3-rc2 next-20230317]
[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/Lorenzo-Stoakes/fs-proc-kcore-Avoid-bounce-buffer-for-ktext-data/20230319-082147
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/119871ea9507eac7be5d91db38acdb03981e049e.1679183626.git.lstoakes%40gmail.com
patch subject: [PATCH 4/4] mm: vmalloc: convert vread() to vread_iter()
config: sparc64-randconfig-r015-20230319 (https://download.01.org/0day-ci/archive/20230319/202303190922.Wk376onx-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0
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
# https://github.com/intel-lab-lkp/linux/commit/a28f374d35bd294a529fcba0b69c8b0e2b66fa6c
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Lorenzo-Stoakes/fs-proc-kcore-Avoid-bounce-buffer-for-ktext-data/20230319-082147
git checkout a28f374d35bd294a529fcba0b69c8b0e2b66fa6c
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc64 SHELL=/bin/bash arch/sparc/vdso/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303190922.Wk376onx-lkp@intel.com/

All warnings (new ones prefixed by >>):

In file included from include/linux/wait.h:11,
from include/linux/swait.h:8,
from include/linux/completion.h:12,
from include/linux/mm_types.h:14,
from include/linux/uio.h:10,
from include/linux/vmalloc.h:12,
from include/asm-generic/io.h:994,
from arch/sparc/include/asm/io.h:22,
from arch/sparc/vdso/vclock_gettime.c:18:
>> arch/sparc/include/asm/current.h:18:30: warning: call-clobbered register used for global register variable
18 | register struct task_struct *current asm("g4");
| ^~~~~~~
arch/sparc/vdso/vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
254 | __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
| ^~~~~~~~~~~~~~~~~~~~
arch/sparc/vdso/vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
282 | __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/sparc/vdso/vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
307 | __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
| ^~~~~~~~~~~~~~~~~~~
arch/sparc/vdso/vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
343 | __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
| ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +18 arch/sparc/include/asm/current.h

^1da177e4c3f41 include/asm-sparc/current.h Linus Torvalds 2005-04-16 16
ba89f59ab825d4 include/asm-sparc/current.h David S. Miller 2007-11-16 17 #ifdef CONFIG_SPARC64
ba89f59ab825d4 include/asm-sparc/current.h David S. Miller 2007-11-16 @18 register struct task_struct *current asm("g4");
ba89f59ab825d4 include/asm-sparc/current.h David S. Miller 2007-11-16 19 #endif
^1da177e4c3f41 include/asm-sparc/current.h Linus Torvalds 2005-04-16 20

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

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