| Date | Thu, 17 Aug 2017 14:39:16 -0700 | From | Andrew Morton <> | Subject | Re: [HMM-v25 00/19] HMM (Heterogeneous Memory Management) v25 |
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On Wed, 16 Aug 2017 20:05:29 -0400 J__r__me Glisse <jglisse@redhat.com> wrote:
> Heterogeneous Memory Management (HMM) (description and justification)
The patchset adds 55 kbytes to x86_64's mm/*.o and there doesn't appear to be any way of avoiding this overhead, or of avoiding whatever runtime overheads are added.
It also adds 18k to arm's mm/*.o and arm doesn't support HMM at all.
So that's all quite a lot of bloat for systems which get no benefit from the patchset. What can we do to improve this situation (a lot)?
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