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

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* Dave Hansen:

> 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?

Sorry for being unclear.  I was refering to the x86-64 ELF psABI
supplement for CET, not the kernel/userspace interface, which still does
not exist in its final form as of today, as far as I understand it.

Thanks,
Florian




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