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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2018-01-10 12:11:39 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2018-01-18 23:00:31 +1100
commiteec7d4593a0c922c2d12649a373825cfa65c17ea (patch)
tree958d548141b7c2e8a92996047d72ea8cb81d8359 /arch/arm64/crypto
parent62c24708761aa41fcda5986170276b7aa2669798 (diff)
downloadlinux-eec7d4593a0c922c2d12649a373825cfa65c17ea.tar.bz2
crypto: arm64/crc32 - move literal data to .rodata section
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> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto')
-rw-r--r--arch/arm64/crypto/crc32-ce-core.S7
1 files 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