From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/7] arm64/crypto: crc32: move literal data to .rodata section
Date: Wed, 10 Jan 2018 12:11:39 +0000 [thread overview]
Message-ID: <20180110121142.18291-5-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <20180110121142.18291-1-ard.biesheuvel@linaro.org>
Move CRC32 literal data 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/crc32-ce-core.S | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/crypto/crc32-ce-core.S b/arch/arm64/crypto/crc32-ce-core.S
index 18f5a8442276..16ed3c7ebd37 100644
--- a/arch/arm64/crypto/crc32-ce-core.S
+++ b/arch/arm64/crypto/crc32-ce-core.S
@@ -50,7 +50,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
- .text
+ .section ".rodata", "a"
.align 6
.cpu generic+crypto+crc
@@ -115,12 +115,13 @@
* uint crc32_pmull_le(unsigned char const *buffer,
* size_t len, uint crc32)
*/
+ .text
ENTRY(crc32_pmull_le)
- adr x3, .Lcrc32_constants
+ adr_l x3, .Lcrc32_constants
b 0f
ENTRY(crc32c_pmull_le)
- adr x3, .Lcrc32c_constants
+ adr_l x3, .Lcrc32c_constants
0: bic LEN, LEN, #15
ld1 {v1.16b-v4.16b}, [BUF], #0x40
--
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 ` Ard Biesheuvel [this message]
2018-01-10 12:11 ` [PATCH 5/7] arm64/crypto: crct10dif: " Ard Biesheuvel
2018-01-10 12:11 ` [PATCH 6/7] arm64/crypto: sha2-ce: move the round constant table " Ard Biesheuvel
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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