RFC: Add <sys/platform/x86.h> to glibc 2.29

[Florian Weimer]

On 08/17/2018 06:43 PM, H.J. Lu wrote:
>>>> Shouldn't these identifiers be in the public (non-internal) namespace?
>>>>
>>> Do we have precedents for such arch specific public functions?
>>
>> There is modify_ldt.
>>
> Which header file has its prototype?

vm86 is an example for an arch-specific function with a prototype in an 
installed header file.

Thanks,
Florian