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@xxxxxx/ > > 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@xxxxxx 20190820202314.1083149-1-songliubraving@xxxxxx 20190823052335.572133-1-songliubraving@xxxxxx 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.
