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Message-ID: <202310031431.NkMgiRBL-lkp@intel.com>
Date: Tue, 3 Oct 2023 14:25:42 +0800
From: kernel test robot <lkp@...el.com>
To: Alexandre Ghiti <alexghiti@...osinc.com>,
Ryan Roberts <ryan.roberts@....com>,
Alexander Potapenko <glider@...gle.com>,
Marco Elver <elver@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Anup Patel <anup@...infault.org>,
Atish Patra <atishp@...shpatra.org>,
Ard Biesheuvel <ardb@...nel.org>,
Andrey Ryabinin <ryabinin.a.a@...il.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Vincenzo Frascino <vincenzo.frascino@....com>,
kasan-dev@...glegroups.com, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
kvm-riscv@...ts.infradead.org, linux-efi@...r.kernel.org,
linux-mm@...ck.org
Cc: oe-kbuild-all@...ts.linux.dev,
Alexandre Ghiti <alexghiti@...osinc.com>
Subject: Re: [PATCH 2/5] mm: Introduce pudp/p4dp/pgdp_get() functions
Hi Alexandre,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.6-rc4 next-20231003]
[cannot apply to efi/next]
[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/Alexandre-Ghiti/riscv-Use-WRITE_ONCE-when-setting-page-table-entries/20231002-231725
base: linus/master
patch link: https://lore.kernel.org/r/20231002151031.110551-3-alexghiti%40rivosinc.com
patch subject: [PATCH 2/5] mm: Introduce pudp/p4dp/pgdp_get() functions
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20231003/202310031431.NkMgiRBL-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231003/202310031431.NkMgiRBL-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310031431.NkMgiRBL-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from include/linux/mm.h:29,
from arch/arm/kernel/asm-offsets.c:12:
>> include/linux/pgtable.h:310:21: error: 'pgdp_get' declared as function returning an array
310 | static inline pgd_t pgdp_get(pgd_t *pgdp)
| ^~~~~~~~
In file included from ./arch/arm/include/generated/asm/rwonce.h:1,
from include/linux/compiler.h:246,
from arch/arm/kernel/asm-offsets.c:10:
include/linux/pgtable.h: In function 'pgdp_get':
>> include/asm-generic/rwonce.h:48:2: warning: returning 'const volatile pmdval_t *' {aka 'const volatile unsigned int *'} from a function with return type 'int' makes integer from pointer without a cast [-Wint-conversion]
48 | ({ \
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
49 | compiletime_assert_rwonce_type(x); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
50 | __READ_ONCE(x); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
51 | })
| ~~
include/linux/pgtable.h:312:16: note: in expansion of macro 'READ_ONCE'
312 | return READ_ONCE(*pgdp);
| ^~~~~~~~~
make[3]: *** [scripts/Makefile.build:116: arch/arm/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1202: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:234: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:234: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/pgdp_get +310 include/linux/pgtable.h
308
309 #ifndef pgdp_get
> 310 static inline pgd_t pgdp_get(pgd_t *pgdp)
311 {
312 return READ_ONCE(*pgdp);
313 }
314 #endif
315
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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