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Date:   Tue, 8 Aug 2023 08:14:03 -0700
From:   Dan Williams <dan.j.williams@intel.com>
To:     James Bottomley <James.Bottomley@hansenpartnership.com>,
        Dan Williams <dan.j.williams@intel.com>, <dhowells@redhat.com>
CC:     Brijesh Singh <brijesh.singh@amd.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        "Dionna Amalie Glaze" <dionnaglaze@google.com>,
        Borislav Petkov <bp@alien8.de>,
        Jarkko Sakkinen <jarkko@kernel.org>,
        Samuel Ortiz <sameo@rivosinc.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        <linux-coco@lists.linux.dev>, <keyrings@vger.kernel.org>,
        <x86@kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/4] keys: Introduce a keys frontend for attestation
 reports
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James Bottomley wrote:
[..]
> > This feedback cast doubt on the assumption that attestation reports
> > are infrequently generated:
> > 
> > http://lore.kernel.org/r/CAAH4kHbsFbzL=0gn71qq1-1kL398jiS2rd3as1qUFnLTCB5mHQ@mail.gmail.com
> 
> Well, I just read attestation would be called more than once at boot. 
> That doesn't necessarily require a concurrent interface.

Ok, I have not seen vigorous defense of the high frequency use case, and
that problem is solvable, it just needs a userspace daemon to front the
interface.