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From: Ard Biesheuvel <ardb@kernel.org>
To: linux-crypto@vger.kernel.org
Cc: Ard Biesheuvel <ardb@kernel.org>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Eric Biggers <ebiggers@kernel.org>,
	Kees Cook <keescook@chromium.org>
Subject: [PATCH 09/10] crypto: x86/ghash - Use RIP-relative addressing
Date: Sat,  8 Apr 2023 17:27:21 +0200	[thread overview]
Message-ID: <20230408152722.3975985-10-ardb@kernel.org> (raw)
In-Reply-To: <20230408152722.3975985-1-ardb@kernel.org>

Prefer RIP-relative addressing where possible, which removes the need
for boot time relocation fixups.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/x86/crypto/ghash-clmulni-intel_asm.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S
index 257ed9446f3ee1a9..99cb983ded9e369f 100644
--- a/arch/x86/crypto/ghash-clmulni-intel_asm.S
+++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S
@@ -93,7 +93,7 @@ SYM_FUNC_START(clmul_ghash_mul)
 	FRAME_BEGIN
 	movups (%rdi), DATA
 	movups (%rsi), SHASH
-	movaps .Lbswap_mask, BSWAP
+	movaps .Lbswap_mask(%rip), BSWAP
 	pshufb BSWAP, DATA
 	call __clmul_gf128mul_ble
 	pshufb BSWAP, DATA
@@ -110,7 +110,7 @@ SYM_FUNC_START(clmul_ghash_update)
 	FRAME_BEGIN
 	cmp $16, %rdx
 	jb .Lupdate_just_ret	# check length
-	movaps .Lbswap_mask, BSWAP
+	movaps .Lbswap_mask(%rip), BSWAP
 	movups (%rdi), DATA
 	movups (%rcx), SHASH
 	pshufb BSWAP, DATA
-- 
2.39.2


  parent reply	other threads:[~2023-04-08 15:27 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-08 15:27 [PATCH 00/10] crypto: x86 - avoid absolute references Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 01/10] crypto: x86/aegis128 - Use RIP-relative addressing Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 02/10] crypto: x86/aesni " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 03/10] crypto: x86/aria " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 04/10] crypto: x86/camellia " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 05/10] crypto: x86/cast5 " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 06/10] crypto: x86/cast6 " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 07/10] crypto: x86/crc32c " Ard Biesheuvel
2023-04-08 15:27 ` [PATCH 08/10] crypto: x86/des3 " Ard Biesheuvel
2023-04-08 15:27 ` Ard Biesheuvel [this message]
2023-04-08 15:27 ` [PATCH 10/10] crypto: x86/sha256 " Ard Biesheuvel
2023-04-08 15:32 ` [PATCH 00/10] crypto: x86 - avoid absolute references Ard Biesheuvel
2023-04-10  9:10   ` Ard Biesheuvel

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