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| author | Heiko Carstens <hca@linux.ibm.com> | 2026-05-19 13:03:15 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-05-28 12:23:22 +0200 |
| commit | 88331c4ec23a28c1006ec532fa64763d4c695e90 (patch) | |
| tree | 5525bb09dddf8f1f9245435518007d39c1c8cc53 /rust/zerocopy/src/pointer/git@git.tavy.me:linux-stable.git | |
| parent | a9e4e50519e99e5be2d69fa4eebec6a4848ae201 (diff) | |
seqlock: Allow UBSAN_ALIGNMENT to fail optimizing
With gcc-15 and gcc-16 with UBSAN_ALIGNMENT enabled the compiler fails to
inline and optimize __scoped_seqlock_bug() away on s390:
s390x-16.1.0-ld: kernel/sched/build_policy.o: in function `__scoped_seqlock_next':
/.../seqlock.h:1286:(.text+0x22030): undefined reference to `__scoped_seqlock_bug'
Fix this by adding UBSAN_ALIGNMENT to the list of config options where a
not inlined empty __scoped_seqlock_bug() is allowed.
Closes: https://lore.kernel.org/r/20260515092057.810542-1-arnd@kernel.org/
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260519110315.1385307-1-hca@linux.ibm.com
Diffstat (limited to 'rust/zerocopy/src/pointer/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions