linux-kernel - [PATCH 3.16 007/370] crypto: arm64/aes-xts-ce: fix for big endian

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Message-ID: <lsq.1489146382.829783881@decadent.org.uk>
Date:   Fri, 10 Mar 2017 11:46:22 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Ard Biesheuvel" <ard.biesheuvel@...aro.org>,
        "Herbert Xu" <herbert@...dor.apana.org.au>
Subject: [PATCH 3.16 007/370] crypto: arm64/aes-xts-ce: fix for big endian

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ard Biesheuvel <ard.biesheuvel@...aro.org>

commit caf4b9e2b326cc2a5005a5c557274306536ace61 upstream.

Emit the XTS tweak literal constants in the appropriate order for a
single 128-bit scalar literal load.

Fixes: 49788fe2a128 ("arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/arm64/crypto/aes-ce.S    | 1 +
 arch/arm64/crypto/aes-modes.S | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/arch/arm64/crypto/aes-ce.S
+++ b/arch/arm64/crypto/aes-ce.S
@@ -10,6 +10,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/assembler.h>
 
 #define AES_ENTRY(func)		ENTRY(ce_ ## func)
 #define AES_ENDPROC(func)	ENDPROC(ce_ ## func)
--- a/arch/arm64/crypto/aes-modes.S
+++ b/arch/arm64/crypto/aes-modes.S
@@ -386,7 +386,8 @@ AES_ENDPROC(aes_ctr_encrypt)
 	.endm
 
 .Lxts_mul_x:
-	.word		1, 0, 0x87, 0
+CPU_LE(	.quad		1, 0x87		)
+CPU_BE(	.quad		0x87, 1		)
 
 AES_ENTRY(aes_xts_encrypt)
 	FRAME_PUSH