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Date:   Fri, 15 Jan 2021 16:20:44 -0800
From:   Dave Hansen <>
To:     "Dey, Megha" <>,
        Ard Biesheuvel <>
Cc:     Herbert Xu <>,
        "David S. Miller" <>,
        Linux Crypto Mailing List <>,
        Linux Kernel Mailing List <>,,,,,,,,,,,, Tony Luck <>,
Subject: Re: [RFC V1 3/7] crypto: ghash - Optimized GHASH computations

On 1/15/21 4:14 PM, Dey, Megha wrote:
> Also, I do not know of any cores that implement PCLMULQDQ and not AES-NI.

That's true, bit it's also possible that a hypervisor could enumerate
support for PCLMULQDQ and not AES-NI.  In general, we've tried to
implement x86 CPU features independently, even if they never show up in
a real CPU independently.

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