Messages in this thread | | | Date | Mon, 12 Mar 2018 15:32:12 +0100 | From | Ingo Molnar <> | Subject | Re: [tip:x86/mm] x86/boot/compressed/64: Describe the logic behind the LA57 check |
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* Kirill A. Shutemov <kirill@shutemov.name> wrote:
> > We can of course bike shed / benchmark this once my desktop refresh > > sports this feature, but ISTR this being one of the very first things > > Ingo mentioned when we started this whole 5L thing. > > I would rather not fix the problem that may not actually exist. :)
That 5 level pagetables involve more overhead is a realy problem.
By default we should only enable 5-level paging if memory mappings exist in the memory map that require the extended physical memory space.
Thanks,
Ingo
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