[PATCH 1/5] x86: Add -mindirect-branch=

[H.J. Lu]

On Mon, Jan 8, 2018 at 8:46 AM, Andi Kleen <ak@linux.intel.com> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>>>
>>> Talking about PIC thunks, those have I believe . character in their symbols,
>>> so that they can't be confused with user functions.  Any reason these
>>> retpoline thunks aren't?
>>>
>>
>> They used to have '.'.  It was changed at the last minute since kernel needs to
>> export them as regular symbols.
>
> The kernel doesn't actually need that to export the symbols.
>
> While symbol CRCs cannot be generated for symbols with '.', CRCs are not
> needed and there were already patches to hide the resulting warnings.
>

Andi, can you work it out with David?

-- 
H.J.