Messages in this thread |  | | Date | Wed, 30 Sep 2020 12:43:39 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v6 5/6] mm: secretmem: use PMD-size pages to amortize direct map fragmentation |
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On Wed, Sep 30, 2020 at 01:20:31PM +0300, Mike Rapoport wrote:
> I tried to dig the regression report in the mailing list, and the best I > could find is > > https://lore.kernel.org/lkml/20190823052335.572133-1-songliubraving@fb.com/ > > which does not mention the actual performance regression but it only > complaints about kernel text mapping being split into 4K pages. > > Any chance you have the regression report handy?
I think the saga started here:
20190820075128.2912224-1-songliubraving@fb.com 20190820202314.1083149-1-songliubraving@fb.com 20190823052335.572133-1-songliubraving@fb.com
After that Thomas did the patch I referred to earlier and I endeavoured to rewrite x86-ftrace.
I added Song to CC, maybe he can remember more.
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