On Thu, Aug 23, 2018 at 05:31:01PM +0200, Petr Vorel wrote:
> Hi,
>
> I wonder, it it makes sense to backport commit
> e666d4e9ceec crypto: vmx - Use skcipher for ctr fallback
> to v 4.14 stable kernel.
> I'm using it in 4.12+.
>
> These commits (somehow similar) has been backported to 4.10.2:
>
On 23 August 2018 at 21:04, Nick Desaulniers wrote:
> On Thu, Aug 23, 2018 at 9:48 AM Ard Biesheuvel
> wrote:
>>
>> Replace the literal load of the addend vector with a sequence that
>> performs each add individually. This sequence is only 2 instructions
>> longer than the original, and 2%
On Thu, Aug 23, 2018 at 9:48 AM Ard Biesheuvel
wrote:
>
> Replace the literal load of the addend vector with a sequence that
> performs each add individually. This sequence is only 2 instructions
> longer than the original, and 2% faster on Cortex-A53.
>
> This is an improvement by itself, but
Replace the literal load of the addend vector with a sequence that
performs each add individually. This sequence is only 2 instructions
longer than the original, and 2% faster on Cortex-A53.
This is an improvement by itself, but also works around a Clang issue,
whose integrated assembler does not
Hi,
I wonder, it it makes sense to backport commit
e666d4e9ceec crypto: vmx - Use skcipher for ctr fallback
to v 4.14 stable kernel.
I'm using it in 4.12+.
These commits (somehow similar) has been backported to 4.10.2:
5839f555fa57 crypto: vmx - Use skcipher for xts fallback
c96d0a1c47ab crypto:
Speed up the GHASH algorithm based on 64-bit polynomial multiplication
by adding support for 4-way aggregation. This improves throughput by
~85% on Cortex-A53, from 1.7 cycles per byte to 0.9 cycles per byte.
When combined with AES into GCM, throughput improves by ~25%, from
3.8 cycles per byte
