linux-kernel - [PATCH 0/5] lib/crypto: Poly1305 fixes

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Message-ID: <20250706231100.176113-1-ebiggers@kernel.org>
Date: Sun,  6 Jul 2025 16:10:55 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Ard Biesheuvel <ardb@...nel.org>,
	"Jason A . Donenfeld" <Jason@...c4.com>,
	linux-arm-kernel@...ts.infradead.org,
	x86@...nel.org,
	Eric Biggers <ebiggers@...nel.org>
Subject: [PATCH 0/5] lib/crypto: Poly1305 fixes

This series is also available at:                                                                        
                                                                        
    git fetch https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git poly1305-fixes

This series fixes the arm, arm64, and x86 Poly1305 functions to not
corrupt random tasks' registers when called in the "wrong" context.  It
also fixes a performance regression on x86 with short messages.

This series is needed for my upcoming poly1305_kunit test to pass.

Eric Biggers (5):
  lib/crypto: arm/poly1305: Remove unneeded empty weak function
  lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts
  lib/crypto: arm64/poly1305: Fix register corruption in no-SIMD
    contexts
  lib/crypto: x86/poly1305: Fix register corruption in no-SIMD contexts
  lib/crypto: x86/poly1305: Fix performance regression on short messages

 lib/crypto/arm/poly1305-glue.c   |  8 ++----
 lib/crypto/arm64/poly1305-glue.c |  3 +-
 lib/crypto/x86/poly1305_glue.c   | 48 +++++++++++++++++++++++++++++++-
 3 files changed, 51 insertions(+), 8 deletions(-)


base-commit: f1da28dfadd26ef95bbd0b1ddf066e7ffe1505ff
-- 
2.50.0