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

Author: torvalds

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

lib/crypto/riscv/.gitignore

@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+poly1305-core.S