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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-01-10 12:11:39 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-01-18 23:00:31 +1100 |
| commit | eec7d4593a0c922c2d12649a373825cfa65c17ea (patch) | |
| tree | 958d548141b7c2e8a92996047d72ea8cb81d8359 | |
| parent | 62c24708761aa41fcda5986170276b7aa2669798 (diff) | |
| download | linux-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>
| -rw-r--r-- | arch/arm64/crypto/crc32-ce-core.S | 7 |
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 |