# Re: \[PATCH v2\] crypto: vmx: Improved AES/XTS performance of 6-way unrolling for ppc.

- From: Danny Tsen \<hidden\>
- Date: 2023-09-15 14:29:40 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2023/09/2336323
- Thread: https://ratatoskr.run/linux-crypto/2023/08/2319861/t.md

```text
Still waiting for the CCLA to send to Openssl.

Thanks.

-Danny

On 9/15/23 8:29 AM, Michael Ellerman wrote:
> Danny Tsen [ref] writes:
>> Improve AES/XTS performance of 6-way unrolling for PowerPC up
>> to 17% with tcrypt.  This is done by using one instruction,
>> vpermxor, to replace xor and vsldoi.
>>
>> The same changes were applied to OpenSSL code and a pull request was
>> submitted.
> https://github.com/openssl/openssl/pull/21812
>
> Still unmerged as of today.
>
> cheers
```