Jeremy Fitzhardinge wrote:
> Zachary Amsden wrote:
>   
>> I don't like this because now a kernel compiled with both CONFIG_XEN
>> and CONFIG_VMI has "nosegneg" turned on.  We don't actually require
>> this for performance or correctness, so it would be nice to be able to
>> dynamically turn it off instead of having it forced. 
>>     
>
> Any suggestions about how to do this?  It seems hard to have a note
> dynamically appear and disappear in the vsyscall.so.
>
> I wasn't terribly concerned about this, since there is effectively zero
> performance difference between the two library implementations.
>   

I'm not super concerned either, but I still don't like it.  There 
already is dynamic replacement for vsyscall.so, so you could have just 
dropped in an an-note-ated version.

Zach
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