+++ This bug was initially created as a clone of Bug #195391 +++ Description of problem: It's time that we make the switch. According to upstream reports SPARSEMEM will eventually replace DISCONTIG. However, testing of platforms has become a blocker for this... let's switch Fedora over and see what happens. I've tested on various x86_64 platforms (a couple of Dells, a few HPs, an IBM box) and haven't seen any issues. -- Additional comment from prarit on 2006-06-14 19:01 EST -- Created an attachment (id=130943) Patch to switch to SPARSEMEM
x86-64 is now done (for the last week or so), nothing bad seems to have happened so far. i386 lacks this (or discontigmem) due to the absense of CONFIG_NUMA. I'm not convinced that setting NUMA on i386 is a good idea. In fact, from what I understand so far, it strikes me as a bad idea. http://www.x86-64.org/lists/discuss/msg09335.html
I think we can drop this. The underlying issue behind switching to SPARSE is memory hotplug which appears to only effect ia64, x86_64, and ppc/64. P.