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crypto: arm64/ghash-ce - fix for big endian

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commit 9c433ad508 upstream.

The GHASH key and digest are both pairs of 64-bit quantities, but the
GHASH code does not always refer to them as such, causing failures when
built for big endian. So replace the 16x1 loads and stores with 2x8 ones.

Fixes: b913a6404c ("arm64/crypto: improve performance of GHASH algorithm")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ard Biesheuvel
2016-10-11 19:15:14 +01:00
committed by Greg Kroah-Hartman
parent cdeaed7dda
commit a7c9666735
1 changed files with 3 additions and 3 deletions
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6
arch/arm64/crypto/ghash-ce-core.S
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@@ -29,8 +29,8 @@
* struct ghash_key const *k, const char *head)
*/
ENTRY(pmull_ghash_update)
ld1 {SHASH.16b}, [x3]
ld1 {XL.16b}, [x1]
ld1 {SHASH.2d}, [x3]
ld1 {XL.2d}, [x1]
movi MASK.16b, #0xe1
ext SHASH2.16b, SHASH.16b, SHASH.16b, #8
shl MASK.2d, MASK.2d, #57
@@ -74,6 +74,6 @@ CPU_LE( rev64 T1.16b, T1.16b )
cbnz w0, 0b
st1 {XL.16b}, [x1]
st1 {XL.2d}, [x1]
ret
ENDPROC(pmull_ghash_update)