From: kernel test robot <lkp@intel.com>
To: Pekka Enberg <penberg@gmail.com>,
linux-riscv@lists.infradead.org, linux-mm@kvack.org
Cc: kbuild-all@lists.01.org, Pekka Enberg <penberg@kernel.org>,
Palmer Dabbelt <palmerdabbelt@google.com>,
Mike Rapoport <rppt@linux.ibm.com>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [PATCH 1/2] mm: pgtable: Make generic pgprot_* macros available for no-MMU
Date: Wed, 15 Jul 2020 04:42:47 +0800 [thread overview]
Message-ID: <202007150408.qls6jgO6%lkp@intel.com> (raw)
In-Reply-To: <20200714100051.345018-1-penberg@gmail.com>
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Hi Pekka,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.8-rc5 next-20200714]
[cannot apply to mmotm/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Pekka-Enberg/mm-pgtable-Make-generic-pgprot_-macros-available-for-no-MMU/20200714-180502
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 0dc589da873b58b70f4caf4b070fb0cf70fdd1dc
config: arm-randconfig-r033-20200714 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/mm.h:32,
from include/linux/scatterlist.h:8,
from include/linux/dma-mapping.h:11,
from drivers/gpu/drm/tilcdc/tilcdc_crtc.c:8:
include/linux/pgtable.h: In function 'pgprot_modify':
>> include/linux/pgtable.h:834:26: error: self-comparison always evaluates to true [-Werror=tautological-compare]
834 | if (pgprot_val(oldprot) == pgprot_val(pgprot_noncached(oldprot)))
| ^~
include/linux/pgtable.h:836:26: error: self-comparison always evaluates to true [-Werror=tautological-compare]
836 | if (pgprot_val(oldprot) == pgprot_val(pgprot_writecombine(oldprot)))
| ^~
include/linux/pgtable.h:838:26: error: self-comparison always evaluates to true [-Werror=tautological-compare]
838 | if (pgprot_val(oldprot) == pgprot_val(pgprot_device(oldprot)))
| ^~
cc1: all warnings being treated as errors
vim +834 include/linux/pgtable.h
829
830 #ifndef pgprot_modify
831 #define pgprot_modify pgprot_modify
832 static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
833 {
> 834 if (pgprot_val(oldprot) == pgprot_val(pgprot_noncached(oldprot)))
835 newprot = pgprot_noncached(newprot);
836 if (pgprot_val(oldprot) == pgprot_val(pgprot_writecombine(oldprot)))
837 newprot = pgprot_writecombine(newprot);
838 if (pgprot_val(oldprot) == pgprot_val(pgprot_device(oldprot)))
839 newprot = pgprot_device(newprot);
840 return newprot;
841 }
842 #endif
843
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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prev parent reply other threads:[~2020-07-14 20:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 10:00 [PATCH 1/2] mm: pgtable: Make generic pgprot_* macros available for no-MMU Pekka Enberg
2020-07-14 10:00 ` [PATCH 2/2] riscv: Use generic pgprot_* macros from <linux/pgtable.h> Pekka Enberg
2020-07-14 11:53 ` [PATCH 1/2] mm: pgtable: Make generic pgprot_* macros available for no-MMU Mike Rapoport
2020-07-14 20:42 ` kernel test robot [this message]
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