linux-kernel - Re: [PATCH v2 01/39] Documentation/x86: Add CET description

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Message-ID: <e3c3d68d-ce99-a70a-1026-0ba99520ae57@intel.com>
Date:   Wed, 12 Oct 2022 08:59:51 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Florian Weimer <fweimer@...hat.com>,
        "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH v2 01/39] Documentation/x86: Add CET description

On 10/12/22 05:29, Florian Weimer wrote:
>> What did you think of the proposal to disable existing binaries and
>> start from scratch? Elaborated in the coverletter in the section
>> "Compatibility of Existing Binaries/Enabling Interface".
> The ABI was finalized around four years ago, and we have shipped several
> Fedora and Red Hat Enterprise Linux versions with it.  Other
> distributions did as well.  It's a bit late to make changes now, and
> certainly not for such trivialities. 

Just to be clear: You're saying that a user/kernel ABI was "finalized"
by glibc shipping the user side of it, before there being an upstream
kernel implementation?