From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/7] arm64/crypto: sha2-ce: move the round constant table to .rodata section
Date: Wed, 10 Jan 2018 12:11:41 +0000 [thread overview]
Message-ID: <20180110121142.18291-7-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <20180110121142.18291-1-ard.biesheuvel@linaro.org>
Move the SHA2 round constant table to the .rodata section where it is
safe from being exploited by speculative execution.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
arch/arm64/crypto/sha2-ce-core.S | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/crypto/sha2-ce-core.S b/arch/arm64/crypto/sha2-ce-core.S
index 679c6c002f4f..4c3c89b812ce 100644
--- a/arch/arm64/crypto/sha2-ce-core.S
+++ b/arch/arm64/crypto/sha2-ce-core.S
@@ -53,6 +53,7 @@
/*
* The SHA-256 round constants
*/
+ .section ".rodata", "a"
.align 4
.Lsha2_rcon:
.word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
@@ -76,9 +77,10 @@
* void sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src,
* int blocks)
*/
+ .text
ENTRY(sha2_ce_transform)
/* load round constants */
- adr x8, .Lsha2_rcon
+ adr_l x8, .Lsha2_rcon
ld1 { v0.4s- v3.4s}, [x8], #64
ld1 { v4.4s- v7.4s}, [x8], #64
ld1 { v8.4s-v11.4s}, [x8], #64
--
2.11.0
next prev parent reply other threads:[~2018-01-10 12:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-10 12:11 [PATCH 0/7] arm64: move literal data into .rodata section Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 1/7] arm64: kernel: avoid executable literal pools Ard Biesheuvel
2018-01-14 23:27 ` Ard Biesheuvel
2018-01-14 23:29 ` Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 2/7] arm64/crypto: aes-cipher: move S-box to .rodata section Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 3/7] arm64/crypto: aes-neon: move literal data " Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 4/7] arm64/crypto: crc32: " Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 5/7] arm64/crypto: crct10dif: " Ard Biesheuvel
2018-01-10 12:11 ` Ard Biesheuvel [this message]
2018-01-10 12:11 ` [PATCH 7/7] arm64/crypto: sha1-ce: get rid of literal pool Ard Biesheuvel
2018-01-18 11:41 ` [PATCH 0/7] arm64: move literal data into .rodata section Herbert Xu
2018-01-18 11:46 ` Ard Biesheuvel
2018-01-18 12:02 ` Herbert Xu
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