From 62c24708761aa41fcda5986170276b7aa2669798 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Wed, 10 Jan 2018 12:11:38 +0000 Subject: [PATCH] crypto: arm64/aes-neon - move literal data to .rodata section Move the S-boxes and some other literals to the .rodata section where it is safe from being exploited by speculative execution. Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu --- arch/arm64/crypto/aes-neon.S | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/crypto/aes-neon.S b/arch/arm64/crypto/aes-neon.S index f1e3aa2732f9..1c7b45b7268e 100644 --- a/arch/arm64/crypto/aes-neon.S +++ b/arch/arm64/crypto/aes-neon.S @@ -32,10 +32,10 @@ /* preload the entire Sbox */ .macro prepare, sbox, shiftrows, temp - adr \temp, \sbox movi v12.16b, #0x1b - ldr q13, \shiftrows - ldr q14, .Lror32by8 + ldr_l q13, \shiftrows, \temp + ldr_l q14, .Lror32by8, \temp + adr_l \temp, \sbox ld1 {v16.16b-v19.16b}, [\temp], #64 ld1 {v20.16b-v23.16b}, [\temp], #64 ld1 {v24.16b-v27.16b}, [\temp], #64 @@ -272,7 +272,7 @@ #include "aes-modes.S" - .text + .section ".rodata", "a" .align 6 .LForward_Sbox: .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5 -- 2.11.0