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Date: Thu, 20 Jun 2024 02:15:35 +0800
From: kernel test robot <lkp@...el.com>
To: Palmer Dabbelt <palmer@...osinc.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: include/uapi/linux/bits.h:9:19: warning: right shift count >= width
of type
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: e5b3efbe1ab1793bb49ae07d56d0973267e65112
commit: 300ce44cbe2924aa83330fc5f24e035665f51b03 Merge patch series "Rework & improve riscv cmpxchg.h and atomic.h"
date: 7 weeks ago
config: riscv-randconfig-r042-20230811 (https://download.01.org/0day-ci/archive/20240620/202406200209.graMn6T6-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240620/202406200209.graMn6T6-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/202406200209.graMn6T6-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/riscv/include/asm/bitops.h:19,
from include/linux/bitops.h:68,
from include/linux/log2.h:12,
from kernel/bounds.c:13:
include/asm-generic/bitops/__ffs.h: In function 'generic___ffs':
include/asm-generic/bitops/__ffs.h:20:22: warning: right shift count >= width of type [-Wshift-count-overflow]
20 | word >>= 32;
| ^~~
In file included from arch/riscv/include/asm/bitops.h:20:
include/asm-generic/bitops/__fls.h: In function 'generic___fls':
include/asm-generic/bitops/__fls.h:18:28: warning: left shift count >= width of type [-Wshift-count-overflow]
18 | if (!(word & (~0ul << 32))) {
| ^~
include/asm-generic/bitops/__fls.h:20:22: warning: left shift count >= width of type [-Wshift-count-overflow]
20 | word <<= 32;
| ^~~
include/asm-generic/bitops/__fls.h:23:28: warning: left shift count >= width of type [-Wshift-count-overflow]
23 | if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
| ^~
include/asm-generic/bitops/__fls.h:27:28: warning: left shift count >= width of type [-Wshift-count-overflow]
27 | if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
| ^~
include/asm-generic/bitops/__fls.h:31:28: warning: left shift count >= width of type [-Wshift-count-overflow]
31 | if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
| ^~
include/asm-generic/bitops/__fls.h:35:28: warning: left shift count >= width of type [-Wshift-count-overflow]
35 | if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
| ^~
include/asm-generic/bitops/__fls.h:39:28: warning: left shift count >= width of type [-Wshift-count-overflow]
39 | if (!(word & (~0ul << (BITS_PER_LONG-1))))
| ^~
In file included from arch/riscv/include/asm/bitops.h:19,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/riscv/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from arch/riscv/kernel/asm-offsets.c:10:
include/asm-generic/bitops/__ffs.h: In function 'generic___ffs':
include/asm-generic/bitops/__ffs.h:20:22: warning: right shift count >= width of type [-Wshift-count-overflow]
20 | word >>= 32;
| ^~~
In file included from arch/riscv/include/asm/bitops.h:20:
include/asm-generic/bitops/__fls.h: In function 'generic___fls':
include/asm-generic/bitops/__fls.h:18:28: warning: left shift count >= width of type [-Wshift-count-overflow]
18 | if (!(word & (~0ul << 32))) {
| ^~
include/asm-generic/bitops/__fls.h:20:22: warning: left shift count >= width of type [-Wshift-count-overflow]
20 | word <<= 32;
| ^~~
include/asm-generic/bitops/__fls.h:23:28: warning: left shift count >= width of type [-Wshift-count-overflow]
23 | if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
| ^~
include/asm-generic/bitops/__fls.h:27:28: warning: left shift count >= width of type [-Wshift-count-overflow]
27 | if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
| ^~
include/asm-generic/bitops/__fls.h:31:28: warning: left shift count >= width of type [-Wshift-count-overflow]
31 | if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
| ^~
include/asm-generic/bitops/__fls.h:35:28: warning: left shift count >= width of type [-Wshift-count-overflow]
35 | if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
| ^~
include/asm-generic/bitops/__fls.h:39:28: warning: left shift count >= width of type [-Wshift-count-overflow]
39 | if (!(word & (~0ul << (BITS_PER_LONG-1))))
| ^~
In file included from include/linux/atomic.h:7,
from include/linux/cpumask.h:14,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:63:
arch/riscv/include/asm/atomic.h: At top level:
arch/riscv/include/asm/atomic.h:15:4: error: #error "64-bit atomics require XLEN to be at least 64"
15 | # error "64-bit atomics require XLEN to be at least 64"
| ^~~~~
In file included from include/linux/bits.h:7,
from include/linux/ratelimit_types.h:5,
from include/linux/printk.h:9,
from include/asm-generic/bug.h:22,
from arch/riscv/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:6:
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_xchg':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:17:24: note: in expansion of macro 'GENMASK'
17 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:58:17: note: in expansion of macro '__arch_xchg_masked'
58 | __arch_xchg_masked(prepend, append, \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:85:9: note: in expansion of macro '_arch_xchg'
85 | _arch_xchg(ptr, x, ".aqrl", "", "")
| ^~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:12:18: note: in expansion of macro 'arch_xchg'
12 | #define raw_xchg arch_xchg
| ^~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4047:16: note: in expansion of macro 'raw_xchg'
4047 | return raw_xchg(&v->counter, new);
| ^~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_xchg_acquire':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:17:24: note: in expansion of macro 'GENMASK'
17 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:58:17: note: in expansion of macro '__arch_xchg_masked'
58 | __arch_xchg_masked(prepend, append, \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:79:9: note: in expansion of macro '_arch_xchg'
79 | _arch_xchg(ptr, x, "", "", RISCV_ACQUIRE_BARRIER)
| ^~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:22:26: note: in expansion of macro 'arch_xchg_acquire'
22 | #define raw_xchg_acquire arch_xchg_acquire
| ^~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4074:16: note: in expansion of macro 'raw_xchg_acquire'
4074 | return raw_xchg_acquire(&v->counter, new);
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_xchg_release':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:17:24: note: in expansion of macro 'GENMASK'
17 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:58:17: note: in expansion of macro '__arch_xchg_masked'
58 | __arch_xchg_masked(prepend, append, \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:82:9: note: in expansion of macro '_arch_xchg'
82 | _arch_xchg(ptr, x, "", RISCV_RELEASE_BARRIER, "")
| ^~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:34:26: note: in expansion of macro 'arch_xchg_release'
34 | #define raw_xchg_release arch_xchg_release
| ^~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4100:16: note: in expansion of macro 'raw_xchg_release'
4100 | return raw_xchg_release(&v->counter, new);
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_xchg_relaxed':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:17:24: note: in expansion of macro 'GENMASK'
17 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:58:17: note: in expansion of macro '__arch_xchg_masked'
58 | __arch_xchg_masked(prepend, append, \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:76:9: note: in expansion of macro '_arch_xchg'
76 | _arch_xchg(ptr, x, "", "", "")
| ^~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:46:26: note: in expansion of macro 'arch_xchg_relaxed'
46 | #define raw_xchg_relaxed arch_xchg_relaxed
| ^~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4123:16: note: in expansion of macro 'raw_xchg_relaxed'
4123 | return raw_xchg_relaxed(&v->counter, new);
| ^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_cmpxchg':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:109:24: note: in expansion of macro 'GENMASK'
109 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:162:17: note: in expansion of macro '__arch_cmpxchg_masked'
162 | __arch_cmpxchg_masked(sc_sfx, prepend, append, \
| ^~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:189:9: note: in expansion of macro '_arch_cmpxchg'
189 | _arch_cmpxchg((ptr), (o), (n), ".rl", "", " fence rw, rw\n")
| ^~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4152:16: note: in expansion of macro 'raw_cmpxchg'
4152 | return raw_cmpxchg(&v->counter, old, new);
| ^~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_cmpxchg_acquire':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:109:24: note: in expansion of macro 'GENMASK'
109 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:162:17: note: in expansion of macro '__arch_cmpxchg_masked'
162 | __arch_cmpxchg_masked(sc_sfx, prepend, append, \
| ^~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:183:9: note: in expansion of macro '_arch_cmpxchg'
183 | _arch_cmpxchg((ptr), (o), (n), "", "", RISCV_ACQUIRE_BARRIER)
| ^~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:65:29: note: in expansion of macro 'arch_cmpxchg_acquire'
65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire
| ^~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4181:16: note: in expansion of macro 'raw_cmpxchg_acquire'
4181 | return raw_cmpxchg_acquire(&v->counter, old, new);
| ^~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_cmpxchg_release':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:109:24: note: in expansion of macro 'GENMASK'
109 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:162:17: note: in expansion of macro '__arch_cmpxchg_masked'
162 | __arch_cmpxchg_masked(sc_sfx, prepend, append, \
| ^~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:186:9: note: in expansion of macro '_arch_cmpxchg'
186 | _arch_cmpxchg((ptr), (o), (n), "", RISCV_RELEASE_BARRIER, "")
| ^~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:77:29: note: in expansion of macro 'arch_cmpxchg_release'
77 | #define raw_cmpxchg_release arch_cmpxchg_release
| ^~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4209:16: note: in expansion of macro 'raw_cmpxchg_release'
4209 | return raw_cmpxchg_release(&v->counter, old, new);
| ^~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h: In function 'raw_atomic64_cmpxchg_relaxed':
>> include/uapi/linux/bits.h:9:19: warning: right shift count >= width of type [-Wshift-count-overflow]
9 | (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
| ^~
include/linux/bits.h:35:38: note: in expansion of macro '__GENMASK'
35 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
| ^~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:109:24: note: in expansion of macro 'GENMASK'
109 | ulong __mask = GENMASK(((sizeof(*p)) * BITS_PER_BYTE) - 1, 0) \
| ^~~~~~~
arch/riscv/include/asm/cmpxchg.h:162:17: note: in expansion of macro '__arch_cmpxchg_masked'
162 | __arch_cmpxchg_masked(sc_sfx, prepend, append, \
| ^~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/cmpxchg.h:180:9: note: in expansion of macro '_arch_cmpxchg'
180 | _arch_cmpxchg((ptr), (o), (n), "", "", "")
| ^~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:89:29: note: in expansion of macro 'arch_cmpxchg_relaxed'
89 | #define raw_cmpxchg_relaxed arch_cmpxchg_relaxed
| ^~~~~~~~~~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:4234:16: note: in expansion of macro 'raw_cmpxchg_relaxed'
4234 | return raw_cmpxchg_relaxed(&v->counter, old, new);
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/cpumask.h:13:
include/linux/cpumask.h: In function 'cpumask_setall':
include/linux/bitmap.h:223:44: warning: right shift count >= width of type [-Wshift-count-overflow]
223 | #define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1)))
| ^~
include/linux/cpumask.h:543:41: note: in expansion of macro 'BITMAP_LAST_WORD_MASK'
543 | cpumask_bits(dstp)[0] = BITMAP_LAST_WORD_MASK(nr_cpumask_bits);
| ^~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/compiler_types.h:89,
from <command-line>:
include/linux/smp.h: At top level:
include/linux/smp.h:34:33: error: requested alignment '20' is not a positive power of 2
34 | __aligned(sizeof(struct __call_single_data));
| ^~~~~~~~~~~~~~~~~~
include/linux/compiler_attributes.h:33:68: note: in definition of macro '__aligned'
33 | #define __aligned(x) __attribute__((__aligned__(x)))
| ^
In file included from include/linux/init.h:5,
from include/linux/printk.h:6:
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, lru) == offsetof(struct folio, lru)"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/mm_types.h:386:9: note: in expansion of macro 'static_assert'
386 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:388:1: note: in expansion of macro 'FOLIO_MATCH'
388 | FOLIO_MATCH(lru, lru);
| ^~~~~~~~~~~
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, mapping) == offsetof(struct folio, mapping)"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/mm_types.h:386:9: note: in expansion of macro 'static_assert'
386 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:389:1: note: in expansion of macro 'FOLIO_MATCH'
389 | FOLIO_MATCH(mapping, mapping);
| ^~~~~~~~~~~
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, compound_head) == offsetof(struct folio, lru)"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/mm_types.h:386:9: note: in expansion of macro 'static_assert'
386 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:390:1: note: in expansion of macro 'FOLIO_MATCH'
390 | FOLIO_MATCH(compound_head, lru);
| ^~~~~~~~~~~
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, index) == offsetof(struct folio, index)"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/mm_types.h:386:9: note: in expansion of macro 'static_assert'
386 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:391:1: note: in expansion of macro 'FOLIO_MATCH'
391 | FOLIO_MATCH(index, index);
| ^~~~~~~~~~~
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, private) == offsetof(struct folio, private)"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/mm_types.h:386:9: note: in expansion of macro 'static_assert'
386 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:392:1: note: in expansion of macro 'FOLIO_MATCH'
392 | FOLIO_MATCH(private, private);
| ^~~~~~~~~~~
include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, _mapcount) == offsetof(struct folio, _mapcount)"
vim +9 include/uapi/linux/bits.h
3c7a8e190bc580 Paolo Bonzini 2023-12-12 6
3c7a8e190bc580 Paolo Bonzini 2023-12-12 7 #define __GENMASK(h, l) \
3c7a8e190bc580 Paolo Bonzini 2023-12-12 8 (((~_UL(0)) - (_UL(1) << (l)) + 1) & \
3c7a8e190bc580 Paolo Bonzini 2023-12-12 @9 (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
3c7a8e190bc580 Paolo Bonzini 2023-12-12 10
:::::: The code at line 9 was first introduced by commit
:::::: 3c7a8e190bc580813ddd9259f62971c8d2a6b5ad uapi: introduce uapi-friendly macros for GENMASK
:::::: TO: Paolo Bonzini <pbonzini@...hat.com>
:::::: CC: Paolo Bonzini <pbonzini@...hat.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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