6:40 a.m.
Hi Christophe,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on kbuild/for-next v5.12-rc7 next-20210412]
[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]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/powerpc-bug-Rem...
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-randconfig-r035-20210412 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
9829f5e6b1bca9b61efc629770d28bb9014dec45)
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 powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
#
https://github.com/0day-ci/linux/commit/398ea05a716b58d231d62d20083a10148...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Christophe-Leroy/powerpc-bug-Remove-specific-powerpc-BUG_ON-and-WARN_ON-on-PPC32/20210413-002741
git checkout 398ea05a716b58d231d62d20083a101488d155b4
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
arch/powerpc/kernel/misc_32.S: Assembler messages:
> arch/powerpc/kernel/misc_32.S:240: Error: unrecognized opcode:
`emit_warn_entry'
clang-13: error: assembler command failed with exit code 1
(use -v to see invocation)
vim +240 arch/powerpc/kernel/misc_32.S
218
219 /*
220 * Copy a whole page. We use the dcbz instruction on the destination
221 * to reduce memory traffic (it eliminates the unnecessary reads of
222 * the destination into cache). This requires that the destination
223 * is cacheable.
224 */
225 #define COPY_16_BYTES \
226 lwz r6,4(r4); \
227 lwz r7,8(r4); \
228 lwz r8,12(r4); \
229 lwzu r9,16(r4); \
230 stw r6,4(r3); \
231 stw r7,8(r3); \
232 stw r8,12(r3); \
233 stwu r9,16(r3)
234
235 _GLOBAL(copy_page)
236 rlwinm r5, r3, 0, L1_CACHE_BYTES - 1
237 addi r3,r3,-4
238
239 0: twnei r5, 0 /* WARN if r3 is not cache aligned */
240 EMIT_WARN_ENTRY 0b,__FILE__,__LINE__, BUGFLAG_WARNING
241
242 addi r4,r4,-4
243
244 li r5,4
245
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org