[Bug 242747] geli: AMD Epyc+GELI not using Hardware AES

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242747

--- Comment #30 from Eirik Oeverby <ltning-freebsd at anduin.net> ---
(In reply to Alan Somers from comment #29)
I see.

I only have this in pciconf -lv (this is from 12.2):

none19 at pci0:34:0:1:     class=0x108000 card=0x14861022 chip=0x14861022 rev=0x00
hdr=0x00
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Starship/Matisse Cryptographic Coprocessor PSPCPP'
    class      = encrypt/decrypt

none40 at pci0:162:0:1:    class=0x108000 card=0x14861022 chip=0x14861022 rev=0x00
hdr=0x00
    vendor     = 'Advanced Micro Devices, Inc. [AMD]'
    device     = 'Starship/Matisse Cryptographic Coprocessor PSPCPP'
    class      = encrypt/decrypt

There seems to be one per CPU socket (the device shows up twice).

I don't know if this is indeed covered by the ccp driver, but I can't find any
documentation on it and the discussion https://reviews.freebsd.org/D12723 seems
to indicate it's not really useful..?

Anyway, I'd be happy to test if there's anything meaningful I can do on 12.2. I
don't have a 13-system on EPYC (yet), but the promise of serious crypto
performance might motivate me to change that. That said, our pain is mostly on
handshake (RSA), not stream (AES)..

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