RE: [RFC PATCH 00/12] mm: mirrored memory support for page buddy allocations
From: Luck, Tony
Date: Fri Jun 19 2015 - 14:42:52 EST
> What's your suggestions? a new zone or a new migratetype?
> Maybe add a new zone will change more mm code.
I don't understand this code well enough (yet) to make a recommendation. I think
our primary concern may not be "how much code we change", but more "how can
we minimize the run-time impact on systems that don't have any mirrored memory.
Just putting all the heavy work behind a CONFIG option isn't sufficient ... we want
enterprise distributions to ship with the option turned on ... even though most
machines won't be using this feature.
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