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

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Thanks Herbert.

-Danny

On 9/15/23 5:41 AM, Herbert Xu wrote:
On Wed, Aug 30, 2023 at 09:49:11AM -0400, Danny Tsen wrote:
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.

This patch has been tested with the kernel crypto module tcrypt.ko and
has passed the selftest.  The patch is also tested with
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS enabled.

Signed-off-by: Danny Tsen <dtsen@xxxxxxxxxxxxx>
---
  drivers/crypto/vmx/aesp8-ppc.pl | 141 +++++++++++++++++++++-----------
  1 file changed, 92 insertions(+), 49 deletions(-)
Patch applied.  Thanks.



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