[jdk11u-dev] RFR: 8271567: AArch64: AES Galois CounterMode (GCM) interleaved implementation using vector instructions [v2]

Andrew Haley aph at openjdk.java.net
Fri Sep 24 15:46:56 UTC 2021


On Fri, 24 Sep 2021 15:14:28 GMT, Volker Simonis <simonis at openjdk.org> wrote:

> But more serious. This isn't a full review but from a quick check it looks like this feature can easily turned off with `-XX:-UseAESCTRIntrinsics`, right? So in that case I have no objections of downporting this instantly to 11u. We might even be ultra-conservative and make `-XX:-UseAESCTRIntrinsics` the default in the downport, but I'm not sure it that's necessary.

I hadn't considered that idea, but it makes sense to turn it off by default. The problem is, I guess, that many customers won't know about it, would have poor performance, and maybe blame AArch64 servers.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/410


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