Re: [PATCH] mm: meminit: Finish initialisation of struct pages before basic setup

[Davidlohr Bueso]

On Fri, 2015-05-22 at 13:14 -0400, Waiman Long wrote:
> I think the non-temporal patch benefits mainly AMD systems. I have tried 
> the patch on both DragonHawk and it actually made it boot up a little 
> bit slower. I think the Intel optimized "rep stosb" instruction (used in 
> memset) is performing well. I had done similar test on zero page code 
> and the performance gain was non-conclusive.

fwiw I did some experiments with similar conclusions a while ago
(inconclusive with intel hw, maybe it was even the same machine ;)
Now, this was for optimizing clear_hugepage by using movnti, but I never
got to run it on an AMD box.

Thanks,
Davidlohr

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