* [sean-jc:x86/dynamic_memslot_hashtable 7/7] include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
@ 2026-06-18 20:50 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-06-18 20:50 UTC (permalink / raw)
To: Sean Christopherson; +Cc: oe-kbuild-all
tree: https://github.com/sean-jc/linux x86/dynamic_memslot_hashtable
head: e6c91f158091040c1e79a7dc9b8401235ae066b5
commit: e6c91f158091040c1e79a7dc9b8401235ae066b5 [7/7] KVM: Dynamically allocate memslot's id=>slot hash table
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260618/202606182256.PUuH548U-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260618/202606182256.PUuH548U-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/202606182256.PUuH548U-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from include/linux/resume_user_mode.h:6,
from include/linux/entry-virt.h:6,
from include/linux/kvm_host.h:5,
from arch/x86/kvm/x86.c:20:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
arch/x86/kvm/x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
--
In file included from include/linux/init.h:5,
from arch/x86/include/asm/mem_encrypt.h:15,
from include/linux/mem_encrypt.h:17,
from arch/x86/include/asm/processor-flags.h:6,
from arch/x86/include/asm/processor.h:5,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/fs_dirent.h:5,
from include/linux/fs/super_types.h:5,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from include/linux/highmem.h:5,
from arch/x86/kvm/vmx/vmx.c:17:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
arch/x86/kvm/vmx/../x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from include/linux/nmi.h:8,
from arch/x86/include/asm/mshyperv.h:6,
from arch/x86/kvm/svm/hyperv.h:9,
from arch/x86/kvm/svm/hyperv.c:7:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
arch/x86/kvm/svm/../x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from include/linux/resume_user_mode.h:6,
from include/linux/entry-virt.h:6,
from include/linux/kvm_host.h:5,
from x86.c:20:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
--
In file included from include/linux/init.h:5,
from arch/x86/include/asm/mem_encrypt.h:15,
from include/linux/mem_encrypt.h:17,
from arch/x86/include/asm/processor-flags.h:6,
from arch/x86/include/asm/processor.h:5,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/fs_dirent.h:5,
from include/linux/fs/super_types.h:5,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from include/linux/highmem.h:5,
from vmx/vmx.c:17:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
vmx/../x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/current.h:5,
from include/linux/sched.h:12,
from include/linux/nmi.h:8,
from arch/x86/include/asm/mshyperv.h:6,
from svm/hyperv.h:9,
from svm/hyperv.c:7:
>> include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))"
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:79:34: note: in expansion of macro '__static_assert'
79 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
svm/../x86.h:63:1: note: in expansion of macro 'static_assert'
63 | static_assert(SIZE_OF_MEMSLOTS_HASHTABLE ==
| ^~~~~~~~~~~~~
vim +80 include/linux/build_bug.h
bc6245e5efd70c Ian Abbott 2017-07-10 61
6bab69c65013be Rasmus Villemoes 2019-03-07 62 /**
6bab69c65013be Rasmus Villemoes 2019-03-07 63 * static_assert - check integer constant expression at build time
6ffd853b0b10e1 Randy Dunlap 2026-03-01 64 * @expr: expression to be checked
6bab69c65013be Rasmus Villemoes 2019-03-07 65 *
6bab69c65013be Rasmus Villemoes 2019-03-07 66 * static_assert() is a wrapper for the C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07 67 * little macro magic to make the message optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07 68 * stringification of the tested expression).
6bab69c65013be Rasmus Villemoes 2019-03-07 69 *
6bab69c65013be Rasmus Villemoes 2019-03-07 70 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07 71 * scope, but requires the expression to be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07 72 * expression (i.e., it is not enough that __builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07 73 * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07 74 *
6bab69c65013be Rasmus Villemoes 2019-03-07 75 * Also note that BUILD_BUG_ON() fails the build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07 76 * true, while static_assert() fails the build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07 77 * false.
6bab69c65013be Rasmus Villemoes 2019-03-07 78 */
6bab69c65013be Rasmus Villemoes 2019-03-07 79 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @80 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07 81
07a368b3f55a79 Maxim Levitsky 2022-10-25 82
:::::: The code at line 80 was first introduced by commit
:::::: 6bab69c65013bed5fce9f101a64a84d0385b3946 build_bug.h: add wrapper for _Static_assert
:::::: TO: Rasmus Villemoes <linux@rasmusvillemoes.dk>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-06-18 20:50 [sean-jc:x86/dynamic_memslot_hashtable 7/7] include/linux/build_bug.h:80:41: error: static assertion failed: "SIZE_OF_MEMSLOTS_HASHTABLE == (1024 * (1 + IS_ENABLED(CONFIG_X86_64)) * (1 + IS_ENABLED(CONFIG_KVM_SMM)))" kernel test robot
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