* [yiliu1765-iommufd:wip/iommu_cache_flush_refactor 5/8] include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295'
@ 2024-02-01 13:55 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-02-01 13:55 UTC (permalink / raw)
To: Yi Liu, Kevin Tian; +Cc: oe-kbuild-all
Hi Yi,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://github.com/yiliu1765/iommufd.git wip/iommu_cache_flush_refactor
head: f2fec66c24236299f6cd347135ac7b39ee5cc555
commit: 409be2dd13f01025d30d24b78287beaf85a02eed [5/8] iommu/vt-d: Use U64_MAX instead of -1
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20240201/202402012159.JVcN8QDF-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240201/202402012159.JVcN8QDF-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/202402012159.JVcN8QDF-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/overflow.h:6,
from include/linux/string.h:11,
from arch/x86/include/asm/page_32.h:18,
from arch/x86/include/asm/page.h:14,
from arch/x86/include/asm/user_32.h:5,
from arch/x86/include/asm/user.h:6,
from include/linux/user.h:1,
from include/linux/elfcore.h:5,
from include/linux/crash_core.h:6,
from include/linux/kexec.h:18,
from include/linux/crash_dump.h:5,
from drivers/iommu/intel/iommu.c:16:
drivers/iommu/intel/iommu.c: In function 'intel_flush_iotlb_all':
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
25 | #define U64_MAX ((u64)~0ULL)
| ^~~~~~~~~~~~
drivers/iommu/intel/iommu.c:1450:73: note: in expansion of macro 'U64_MAX'
1450 | domain_flush_pasid_iotlb(iommu, dmar_domain, 0, U64_MAX, 0);
| ^~~~~~~
--
In file included from include/linux/overflow.h:6,
from include/linux/string.h:11,
from include/linux/uuid.h:11,
from include/linux/mod_devicetable.h:14,
from include/linux/cpufeature.h:12,
from drivers/iommu/intel/pasid.c:13:
drivers/iommu/intel/pasid.c: In function 'intel_pasid_tear_down_entry':
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
25 | #define U64_MAX ((u64)~0ULL)
| ^~~~~~~~~~~~
drivers/iommu/intel/pasid.c:257:55: note: in expansion of macro 'U64_MAX'
257 | qi_flush_piotlb(iommu, did, pasid, 0, U64_MAX, 0);
| ^~~~~~~
drivers/iommu/intel/pasid.c: In function 'pasid_flush_caches':
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
25 | #define U64_MAX ((u64)~0ULL)
| ^~~~~~~~~~~~
drivers/iommu/intel/pasid.c:279:55: note: in expansion of macro 'U64_MAX'
279 | qi_flush_piotlb(iommu, did, pasid, 0, U64_MAX, 0);
| ^~~~~~~
drivers/iommu/intel/pasid.c: In function 'intel_pasid_setup_page_snoop_control':
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
25 | #define U64_MAX ((u64)~0ULL)
| ^~~~~~~~~~~~
drivers/iommu/intel/pasid.c:569:47: note: in expansion of macro 'U64_MAX'
569 | qi_flush_piotlb(iommu, did, pasid, 0, U64_MAX, 0);
| ^~~~~~~
vim +25 include/linux/limits.h
3c9d017cc283df Andy Shevchenko 2023-08-04 14
54d50897d544c8 Masahiro Yamada 2019-03-07 15 #define U8_MAX ((u8)~0U)
54d50897d544c8 Masahiro Yamada 2019-03-07 16 #define S8_MAX ((s8)(U8_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 17 #define S8_MIN ((s8)(-S8_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 18 #define U16_MAX ((u16)~0U)
54d50897d544c8 Masahiro Yamada 2019-03-07 19 #define S16_MAX ((s16)(U16_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 20 #define S16_MIN ((s16)(-S16_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 21 #define U32_MAX ((u32)~0U)
3f50f132d8400e John Fastabend 2020-03-30 22 #define U32_MIN ((u32)0)
54d50897d544c8 Masahiro Yamada 2019-03-07 23 #define S32_MAX ((s32)(U32_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 24 #define S32_MIN ((s32)(-S32_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 @25 #define U64_MAX ((u64)~0ULL)
54d50897d544c8 Masahiro Yamada 2019-03-07 26 #define S64_MAX ((s64)(U64_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 27 #define S64_MIN ((s64)(-S64_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 28
:::::: The code at line 25 was first introduced by commit
:::::: 54d50897d544c874562253e2a8f70dfcad22afe8 linux/kernel.h: split *_MAX and *_MIN macros into <linux/limits.h>
:::::: TO: Masahiro Yamada <yamada.masahiro@socionext.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2024-02-01 13:55 [yiliu1765-iommufd:wip/iommu_cache_flush_refactor 5/8] include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' kernel test robot
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