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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-19 08:39:48 +1200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-19 08:39:48 +1200 |
| commit | 516471569089749163be24b973ea928b56ac20d9 (patch) | |
| tree | a18cbf8645674ee84f0c853fb265208ed97d690d /arch/arm64/include/asm/simd.h | |
| parent | 5caa3808bc29de989f46451124e109dd33e464c6 (diff) | |
| parent | 5a0b1882506858b12cc77f0e2439a5f3c5052761 (diff) | |
Merge tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fixes from Eric Biggers:
- Fix a performance issue with the scoped_ksimd() macro (new in 6.19)
where it unnecessarily initialized the entire fpsimd state.
- Add a missing gitignore entry for a generated file added in 6.18.
* tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: riscv: Add poly1305-core.S to .gitignore
arm64/simd: Avoid pointless clearing of FP/SIMD buffer
Diffstat (limited to 'arch/arm64/include/asm/simd.h')
| -rw-r--r-- | arch/arm64/include/asm/simd.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/simd.h b/arch/arm64/include/asm/simd.h index 0941f6f58a14..69ecbd69ca8c 100644 --- a/arch/arm64/include/asm/simd.h +++ b/arch/arm64/include/asm/simd.h @@ -48,6 +48,13 @@ DEFINE_LOCK_GUARD_1(ksimd, kernel_neon_begin(_T->lock), kernel_neon_end(_T->lock)) -#define scoped_ksimd() scoped_guard(ksimd, &(struct user_fpsimd_state){}) +#define __scoped_ksimd(_label) \ + for (struct user_fpsimd_state __uninitialized __st; \ + true; ({ goto _label; })) \ + if (0) { \ +_label: break; \ + } else scoped_guard(ksimd, &__st) + +#define scoped_ksimd() __scoped_ksimd(__UNIQUE_ID(label)) #endif |