crypto: vmx - Increase priority of aes-cbc cipher
All of the VMX AES ciphers (AES, AES-CBC and AES-CTR) are set at priority 1000. Unfortunately this means we never use AES-CBC and AES-CTR, because the base AES-CBC cipher that is implemented on top of AES inherits its priority. To fix this, AES-CBC and AES-CTR have to be a higher priority. Set them to 2000. Testing on a POWER8 with: cryptsetup benchmark --cipher aes --key-size 256 Shows decryption speed increase from 402.4 MB/s to 3069.2 MB/s, over 7x faster. Thanks to Mike Strosaker for helping me debug this issue. Fixes: 8c755ace ("crypto: vmx - Adding CBC routines for VMX module") Cc: stable@vger.kernel.org Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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