Fortunately the OpenSSL test suite also fails when run during the build
on Ryzen. It turns out that the AES-NI+SHA-NI AES-CBC+SHA{1,256}
implementations are both broken, so
https://github.com/openssl/openssl/commit/08d09628d2c9f3ef599399d8cad021a07ab98347
needs to be backported too. I guess nobody's seriously used Ubuntu on
Goldmont.

I've uploaded fixed SRU test builds to
https://launchpad.net/~wgrant/+archive/ubuntu/experimental/+packages?field.name_filter=openssl,
and they all build and test successfully on i386 and amd64 on Ryzen. At
least 9.3~ppa1 even lets OpenVPN connect, with accelerated hashing. I
don't think we really need to dig up a Goldmont device from somewhere,
but if someone has one handy...

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https://bugs.launchpad.net/bugs/1674399

Title:
  OpenSSL CPU detection for AMD Ryzen CPUs

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