[libc/string] State of PAGE_COPY_FWD / PAGE_COPY_THRESHOLD

[Florian Weimer]

On 11/10/2016 10:25 AM, Siddhesh Poyarekar wrote:
> On Thursday 10 November 2016 02:24 PM, Andrew Pinski wrote:
>> I found the email thread, it is setup for this Friday.
>
> Would you or someone be able to post a summary of the discussion?  Last
> I know from discussions at Cauldron, I am responsible for working on
> fixing IFUNC related issues that prevent us from doing anything useful
> in an ifunc, including accessing vdso.  It is on my list of things to do
> right after tunables.

Another option would be to get the complete implementation of memcmp 
etc. fom the vDSO, I think.

In the ARM context, there were also suggestions that we should support 
big/little asymmetric multi-processing.  I hope we don't have to do 
this.  It would seriously limit IFUNC selection and other 
microarchitecture-based optimizations.

Thanks,
Florian