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libgcrypt: bulk AES-GCM acceleration for ppc64le
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To implement AES-GCM bulk function to improve AES-GCM performance using Power Assembly.

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P10 Slow dirmngr

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dannytsen created this object in space S1 Public.
dannytsen updated the task description. (Show Details)

The implementation is for Power 10 and above. The improvement is as follow for AES128,


GCM enc |     0.240 ns/B      3969 MiB/s         - c/B
GCM dec |     0.240 ns/B      3966 MiB/s         - c/B


GCM enc |     0.192 ns/B      4971 MiB/s         - c/B
GCM dec |     0.193 ns/B      4951 MiB/s         - c/B

The benchmark was run on P10 with 3.447 GHz.

Also, This is the first time I am using the platform, I would need advise how to submit the patch. Thanks.

I have upload my patch here.

Files added and changed.

  2. cipher/rijndael.c
  3. cipher/rijndael-p10le.c - new
  4. cipher/
  5. cipher/rijndael-gcm-p10le.s - new
  6. gsrc/10lib.h
  7. src/hwf-ppc.c
werner triaged this task as Normal priority.Tue, Nov 23, 9:06 AM
werner added projects: libgcrypt, ppc, patch.
werner added a subscriber: werner.

FWIW: We need a DCO; see doc/HACKING.

Hi Werner, Here is the DCO. Thanks.

Please read doc/HACKING carefully on the process of sending DCO the right way.

I sent a copy to Hope this is the right process. Thanks.