crypto: arm64/aes-blk - yield NEON after every block of input
Avoid excessive scheduling delays under a preemptible kernel by
yielding the NEON after every block of input.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/arch/arm64/crypto/aes-ce.S b/arch/arm64/crypto/aes-ce.S
index 50330f5..623e74e 100644
--- a/arch/arm64/crypto/aes-ce.S
+++ b/arch/arm64/crypto/aes-ce.S
@@ -30,18 +30,21 @@
.endm
/* prepare for encryption with key in rk[] */
- .macro enc_prepare, rounds, rk, ignore
- load_round_keys \rounds, \rk
+ .macro enc_prepare, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
.endm
/* prepare for encryption (again) but with new key in rk[] */
- .macro enc_switch_key, rounds, rk, ignore
- load_round_keys \rounds, \rk
+ .macro enc_switch_key, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
.endm
/* prepare for decryption with key in rk[] */
- .macro dec_prepare, rounds, rk, ignore
- load_round_keys \rounds, \rk
+ .macro dec_prepare, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
.endm
.macro do_enc_Nx, de, mc, k, i0, i1, i2, i3
