Problems with AES-GCM native acceleration

Andrew Haley aph at redhat.com
Wed Nov 21 17:37:05 UTC 2018


On 11/15/18 10:42 AM, Gidon Gershinsky wrote:
> Having the decryption optimized in the HotSpot engine would be ideal.

I agree with you. I did a few experiments, and it can take a very
long time for C2 compilation to kick in, especially because GCM is
glacially slow until the intrinsics are used.

I think this would be a generally useful enhancement to HotSpot,
and I'm kicking around an experimental patch which adds the
intrinsics to c1 and the interpreter.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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