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Re: [PATCH 0/5] x86: CVE-2017-5715, aka Spectre
* David Woodhouse:
> On Sun, 2018-01-07 at 16:36 -0700, Jeff Law wrote:
>>
>> My fundamental problem with this patchkit is that it is 100% x86/x86_64
>> specific.
>>
>> ISTM we want a target independent mechanism (ie, new standard patterns,
>> options, etc) then an x86/x86_64 implementation using that target
>> independent framework (ie, the actual implementation of those new
>> standard patterns).
>
> From the kernel point of view, I'm not too worried about GCC internal
> implementation details. What would be really useful to agree in short
> order is the command-line options that invoke this behaviour, and the
> ABI for the thunks.
Do you assume that you will eventually apply run-time patching to
thunks (in case they aren't needed)?