Messages in this thread | | | Date | Mon, 02 Apr 2007 14:43:50 -0700 | From | Martin Bligh <> | Subject | Re: [PATCH 1/4] x86_64: Switch to SPARSE_VIRTUAL |
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> Note that these arguments on DISCONTIG are flame bait for many SGIers. > We usually see this as an attack on DISCONTIG/VMEMMAP which is the > existing best performing implementation for page_to_pfn and vice > versa. Please lets stop the polarization. We want one consistent scheme > to manage memory everywhere. I do not care what its called as long as it > covers all the bases and is not a glaring performance regresssion (like > SPARSEMEM so far).
The main conceptual difference (in my mind) was not having one bastardized data structure (pg_data_t) that meant different things in different situations (is it a node, or a section of discontig mem?). Also we didn't support discontig mem within a node (at least with the old discontigmem), which was partly the result of that hybridization.
Beyond that, it's just naming really.
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