On 07/20/2015 05:31 PM, Andy Lutomirski wrote:
> On Jul 20, 2015 1:35 AM, "Florian Weimer" <[email protected]> wrote:
>>
>> On 07/18/2015 01:33 AM, Andy Lutomirski wrote:
>>
>>> I think the API should be "set gsbase to x + y*(cpu number)".  On
>>> x86_64, userspace just allocates a big swath of virtual space and
>>> populates it as needed.
>>
>> This will break WINE and similar applications which use %gs today.
> 
> Presumably WINE could just opt not to use this facility, just like
> WINE will have to opt out of whatever the enterprise people who want
> WRGSBASE were thinking of doing with it.

How is this possible if it's process-global attribute and glibc or some
library in the process starts using it?

-- 
Florian Weimer / Red Hat Product Security
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