* Re: [PATCH] KVM: s390: Fix to clear PTE when discarding a swapped page
[not found] <20250924121707.145350-1-ggala@linux.ibm.com>
@ 2025-09-27 17:14 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-09-27 17:14 UTC (permalink / raw)
To: Gautam Gala, Alexander Gordeev, Gerald Schaefer, Heiko Carstens,
Vasily Gorbik, Christian Borntraeger, Sven Schnelle,
Janosch Frank, Claudio Imbrenda, David Hildenbrand
Cc: llvm, oe-kbuild-all, linux-s390, linux-kernel, kvm
Hi Gautam,
kernel test robot noticed the following build warnings:
[auto build test WARNING on s390/features]
[also build test WARNING on linus/master v6.17-rc7 next-20250926]
[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/Gautam-Gala/KVM-s390-Fix-to-clear-PTE-when-discarding-a-swapped-page/20250924-201847
base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
patch link: https://lore.kernel.org/r/20250924121707.145350-1-ggala%40linux.ibm.com
patch subject: [PATCH] KVM: s390: Fix to clear PTE when discarding a swapped page
config: s390-defconfig (https://download.01.org/0day-ci/archive/20250928/202509280003.NWFBhwme-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project cafc064fc7a96b3979a023ddae1da2b499d6c954)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250928/202509280003.NWFBhwme-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509280003.NWFBhwme-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/s390/boot/als.c:9:
In file included from arch/s390/include/asm/sclp.h:26:
In file included from arch/s390/include/asm/chpid.h:10:
In file included from arch/s390/include/asm/cio.h:10:
In file included from arch/s390/include/asm/dma-types.h:7:
In file included from include/linux/io.h:12:
In file included from arch/s390/include/asm/io.h:15:
>> arch/s390/include/asm/pgtable.h:2065:48: warning: passing 'unsigned long *' to parameter of type 'long *' converts between pointers to integer types with different sign [-Wpointer-sign]
2065 | value = __atomic64_or_barrier(PGSTE_PCL_BIT, ptr);
| ^~~
arch/s390/include/asm/atomic_ops.h:161:1: note: passing argument to parameter 'ptr' here
161 | __ATOMIC64_OPS(__atomic64_or, "ogr")
| ^
arch/s390/include/asm/atomic_ops.h:157:2: note: expanded from macro '__ATOMIC64_OPS'
157 | __ATOMIC64_OP(op_name##_barrier, op_string)
| ^
arch/s390/include/asm/atomic_ops.h:141:53: note: expanded from macro '__ATOMIC64_OP'
141 | static __always_inline long op_name(long val, long *ptr) \
| ^
1 warning generated.
vim +2065 arch/s390/include/asm/pgtable.h
2057
2058 static inline pgste_t pgste_get_lock(pte_t *ptep)
2059 {
2060 unsigned long value = 0;
2061 #ifdef CONFIG_PGSTE
2062 unsigned long *ptr = (unsigned long *)(ptep + PTRS_PER_PTE);
2063
2064 do {
> 2065 value = __atomic64_or_barrier(PGSTE_PCL_BIT, ptr);
2066 } while (value & PGSTE_PCL_BIT);
2067 value |= PGSTE_PCL_BIT;
2068 #endif
2069 return __pgste(value);
2070 }
2071
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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